Vic,
Glad you found the problem. ive seen alot of components break down under load,or in other terms under circuit operations. Before i was in engineering i worked as a depot repair tech. working on everything and anything. Most of the "dog" repairs as we techs call them,were either semiconductor failure under load or capacitor failure under load.
the failures were from the junction break downs, either BE, BC,or sometimes CE. these even tested good on the good transistor testers and also on a scope.Only when applying the required voltage and allowing current to be detected,in the circuit, would you see the breakdown of the signal from input to output.,and when said components were replaced, it solved the problem in a majority of cases.When current,or the pressure of the electron flow gets to a big enough pressure,you have punch thru on any or all junctions that were damaged from heavy static and or lightning.Sometimes you can pick this out with the component heating up,but alot of times the component will act like all the others off the shelf until put to the test.
73 David ac9xh
On Thursday, June 16, 2022 at 04:58:34 PM EDT, Vic WA4THR via groups.io <vhklein@...> wrote:
David, you win the prize! After confirming continuity right up the the leads of Q911/912, I pulled them from the circuit. Alas, they tested OK on the little transistor checker, so I confirmed that all the resistance values and circuit paths were OK and then installed 2 new 2N3904's after matching hfe values on the little tester (not really needed, but couldn't hurt). Surprise, output power has returned! The event that caused this had clearly taken Q90, and it did test bad after removal, but these 2 must be breaking down under load or something as you suggest. Power is only slightly less across the bands than before, but that could be that I am running slightly lower voltage to the finals today. While things were spread out across the bench I did remove the regulator circuit that was providing the lower power to the main board, but only after the transmitter repair was successful.
Evan, that RF probe you suggested has the identical circuit, including the component choices and values, to the one I cobbled up on the bench that helped trace the problem. Still, it is a much neater package than my perf board and clip leads, and quite inexpensive, so I have ordered one.
Thanks to you as well, Raj, for your suggestions. I was rocking T8 around and even bridging the capacitors with parallel? caps trying to get that signal to the next stage. The support from the community here is fantastic and I may have just chucked this thing without all the ideas, but it has been one of my favorite rigs and has traveled with me a lot, so I am glad to have it back and functional.
By the way, I also have a BitX40 and it blew a driver stage some years back because of being near a 500w amp that was transmitting, so the back-to-back diodes mod was made as it clearly had a weakness there. I was never sure the uBitX had the issue, but I had installed the diodes as many had suggested before this event. At one point in the diagnosis of the problem I pulled them, suspecting they might have shorted in the event, but that made no difference. I haven't bothered putting them back in at this point since they clearly didn't help in this case.
=Vic=
|
David, you win the prize! After confirming continuity right up the the leads of Q911/912, I pulled them from the circuit. Alas, they tested OK on the little transistor checker, so I confirmed that all the resistance values and circuit paths were OK and then installed 2 new 2N3904's after matching hfe values on the little tester (not really needed, but couldn't hurt). Surprise, output power has returned! The event that caused this had clearly taken Q90, and it did test bad after removal, but these 2 must be breaking down under load or something as you suggest. Power is only slightly less across the bands than before, but that could be that I am running slightly lower voltage to the finals today. While things were spread out across the bench I did remove the regulator circuit that was providing the lower power to the main board, but only after the transmitter repair was successful.
Evan, that RF probe you suggested has the identical circuit, including the component choices and values, to the one I cobbled up on the bench that helped trace the problem. Still, it is a much neater package than my perf board and clip leads, and quite inexpensive, so I have ordered one.
Thanks to you as well, Raj, for your suggestions. I was rocking T8 around and even bridging the capacitors with parallel? caps trying to get that signal to the next stage. The support from the community here is fantastic and I may have just chucked this thing without all the ideas, but it has been one of my favorite rigs and has traveled with me a lot, so I am glad to have it back and functional.
By the way, I also have a BitX40 and it blew a driver stage some years back because of being near a 500w amp that was transmitting, so the back-to-back diodes mod was made as it clearly had a weakness there. I was never sure the uBitX had the issue, but I had installed the diodes as many had suggested before this event. At one point in the diagnosis of the problem I pulled them, suspecting they might have shorted in the event, but that made no difference. I haven't bothered putting them back in at this point since they clearly didn't help in this case.
=Vic=
|
Re: BITX ver 5 Display Problem
Dennis,
The display gets its power from the 5volt regulator on the Raduino board.? That is powered from the 12volts through pins 15 and 16 on the main display board.
I would verify the in and out voltages on the LM7805 regulator on the Raduino board.
73
Evan
AC9TU
|
Hi all,
Sorry the off-topic. You all probably already know ADX, but just in case:
It is very simple, but seems cool for digital modes using single tone, and it is totally free and open source, just like the great uBitx!
Cheers,
Rafael PU2UIT
|
Re: BITX ver 5 Display Problem
I have traced my no display problem to lack of power. Whap pin or pins on the bottom main board connector supplies power to the display assembly?. Thank Your
I recently finished up my version 5 and lo and behold to my surprise, I have no display. I have? checked all the wiring over twice and cannot find any errors. Has anyone run into this problem. All other functions appear to work but really cannot tell what's going on without the display. Any advice would be appreciated. Thanks 73
|
Re: ft8 interface connections
#ft8
Thank you for everyone who gave me pointers on this.
I ended up using just the USB sound dongle without any other interface - could receive happily, but no-one was hearing me, and PSK Reporter wasn't showing much in the way of reception. Tried various things, including checking the antenna SWR at the 20m FT8 frequency (around 1.3, so pretty good). I was just not being heard.?
In the end, we diagnosed a poor audio signal from the software as the most likely culprit, as everything else seemed to be working correctly. So I put the mic cable (modified to avoid the constant T/X, as advised) directly into the iMac's phones output and set for a really good output level. ?Bingo! Suddenly I was being heard allover Europe & even had reports on PSK from Iceland & New York at 6600km. Then I made 4 QSOs in Germany & Netherlands within about 10 minutes. I don't doubt I should finesse the installation a little more, but right now, with two audio cables, a micro USB cable & a ?4 sound dongle, I have a working set-up.
These sets are amazing - thank you Ashhar!
73,
Jonathan
G5LUX
|
Re: ft8 interface connections
#ft8
David,
Thanks for the extensive feedback. I am on yet another road trip and I will try out your tips. The calibrate is a very useful tip. - f
I believe i have pulse audio chosen for my setup but would have to look.the posting from another forum, all that info was from them,not me. I didnt have alot of problems getting started but will find out when i actually go from dummy load to antenna.
And the only rig i run on sstv softare either on ubuntu or imac is the ubitx v6.1
hope this helps Ashhar,
Jonathan,
hope u get the physicals out of the way so you can play with the software. running cat is neat with the ubitx. brings back the fun in Radio.
got some honeydoo lists to do so ,
73
David
ac9xh
|
Re: ft8 interface connections
#ft8
I believe i have pulse audio chosen for my setup but would have to look.the posting from another forum, all that info was from them,not me. I didnt have alot of problems getting started but will find out when i actually go from dummy load to antenna.
And the only rig i run on sstv softare either on ubuntu or imac is the ubitx v6.1
hope this helps Ashhar,
Jonathan,
hope u get the physicals out of the way so you can play with the software. running cat is neat with the ubitx. brings back the fun in Radio.
got some honeydoo lists to do so ,
73
David
ac9xh
|
Re: ft8 interface connections
#ft8
also,
here is some info i copied from a post from another group regarding audio problems from qsstv.:
Make sure nothing else is using the device, for example, you can't have WSJTX running at the same time as QSSTV. It needs to be shut down.
In order to identify the correct device, I first disconnected the radio from the PC and made a list of the devices under the Sound tab. I then connected the radio and made a note of any new entries that popped up. Armed with that information I was then able to connect to the radio using Alsa and was able to receive.
If you are controlling the radio using the Hamlib interface (Enable Hamlib Cat Interface), the WiKi has a note to say that for Kenwood radios you also need to select CAT(Data Port) . Came across that while trying to figure out how to remote control my radio.
Another option with sound is to use PulseAudio. I am using Linux Mint and when I select PulseAudio I can then go to the menu and launch the PulseAudio Volume Control and QSSTV will be listed in both the Playback and Recording tabs. It is then a matter of selecting the correct audio device on each tab and setting a level. Also look at the Input and Output tabs for the actual device level settings. I just set both to 100% and then the level for QSSTV on the Recording and Playback tab.
73
David
ac9xh
|
Re: ft8 interface connections
#ft8
Ashhar,
here is another fellow who uses qsstv and made a website about it. he worked on his audio thru the command line.
charlesreid1.com/wiki/Qsstv
73
David
ac9xh
|
Re: ft8 interface connections
#ft8
Ashhar, im still playing with my transmit settings on the ubuntu laptop, but the receive is great. this is the qsstv 9.4.4 This weekend i will try the tranmsit side. I have loaded it into a dummy load and seems to work,buthavent connected it to the antenna as of yet. havent decided which pic i want to transmit form my qth. oh forgot, you have to click on calibrate to get soundcard to function properly . I didnt do that and it just sat there staring at me waiting for my end to do something.: It will take several minutes to complete. Be sure to wait long enough, the progress is extremely slow
When RX and TX calibration is finished, press the OK button to accept the new values.
- Note: You can always enter the clock values manually.this info comes from the Qsstv link from the help tab under users guide subsection SSTV calibration
hope this helps. It took me awhile to get mine going also. it wouldnt read a prerecorded test file until i got the calibration and settings right. for the Imac, i use? multimode cocoa from blackcat systems 73 David ac9xh
|
Re: ft8 interface connections
#ft8
Tnx, I seem to be having some? problems configuring it to a different sound card. Lemme try it again. - f
Ashhar,
also in transmit mode there is a vox box you can check to use just like the other software the ubitx works on.
Ive tried it and it works for me on my setup. havent sent any pics yet,just loaded the ubitx into a dummy load to see if it will work. Also In Receive mode ,i have mine set on auto, senistivity at high,default image format png,and the other settings on auto also. slant and save.
hope this helps 73 David ac9xh
On Wednesday, June 15, 2022 at 02:31:02 PM EDT, david todd via <ac9xh= [email protected]> wrote:
Ashhar,
forgot to inform you that the users guid is accessible thru the help tab.
I have used ubitx on other sstv software,but not this one. this one is mainly for my ubuntu linux laptop Im still playing with the settings and so forth.
73 David ac9xh
On Wednesday, June 15, 2022 at 02:27:47 PM EDT, david todd < ac9xh@...> wrote:
Ashhar,
I use Qsstv on a laptop that has ubuntu installed. seems to work ok. The setup is similar to the wsjtx and other software.
I have received some sstv signals with it but have not transmitted yet with it.Version i have is 9.4.4. Also ,Ashhar, after installation you can click on users guide and it will give a complete users guide on installation,usages,etc.
73 David ac9xh
On Tuesday, June 14, 2022 at 10:35:20 PM EDT, Ashhar Farhan < farhanbox@...> wrote:
Not to hijack this thread... Has anyone got qsstv going on the ubitx? - f
Evan and Jonathan,
I use the 817,ft857, and also 3 others work for me in the yaseu section.Then set the thing to vox,make sure you click on what ur using on output and input of audio on settings ,so the program can identify the settings also.
My own usage ,i have to start wstjx first,then turn on the ubitx.I found on my imac,after starting ft8 software,i then have to plug in dongle and then the 3.5mm cable.if i dont it either wont transmit ,or receive depending on my imacs mood.:). Has never crashed though. And i use jtdx with the imac with this setup and found the jtdx gives more decodes compared to wsjt-x
with my imac,running catalina ,i have only one headphone jack. no mic jack but has a built in mic.Also My unit doesnt have a dvd/cd rom drive either. I just use thumbdrives to load software or copy,etc.but i also use a soundcard dongle for usb,and of course the 3.5mm cable to heandphone jack.
Basically my imac is a slim fast barebones imac,that runs about everything.I have contacted many countries with this setup,and have fldigi installed for psk31 and rtty .I also have SSTV software installed . But i still had to disable one conductor to prevent the ubitx from going into constant transmit.
even with dongle the setup is basically the same. one cable for audio output and one cable used for microphone input
Seems to work pretty good. Also, I believe on older posts,which you can find in the search box type in ft8 on ubitx or whatever that sounds like it,and the older posts have alot of info regarding the microphone cable conductor issue
73 David ac9xh
On Tuesday, June 14, 2022 at 12:25:40 AM EDT, Evan Hand < elhandjr@...> wrote:
Jonathan,
David AC9XH is correct in his advice.? The only difference was that my laptop audio did not work very well, so I bought an $8 USB dongle that solved the audio issues after adding 600ohm isolation transformers.
I did need to add ferrites on the cables between the computer and uBitx to limit RF getting into the computer/uBitx.
In the WSJT-X software, you use the Yeasu FT-817 as the radio selection.? I have disconnected the uBitx from my PC as I am now using a QRP-Labs QDX to play with FT8/FT4, so I do not have the details of all the other settings on the radio page.? Maybe David can share any details that he is using.
Have fun!
73
Evan
AC9TU
|
Re: ft8 interface connections
#ft8
Ashhar,
also in transmit mode there is a vox box you can check to use just like the other software the ubitx works on.
Ive tried it and it works for me on my setup. havent sent any pics yet,just loaded the ubitx into a dummy load to see if it will work. Also In Receive mode ,i have mine set on auto, senistivity at high,default image format png,and the other settings on auto also. slant and save.
hope this helps 73 David ac9xh
On Wednesday, June 15, 2022 at 02:31:02 PM EDT, david todd via groups.io <ac9xh@...> wrote:
Ashhar,
forgot to inform you that the users guid is accessible thru the help tab.
I have used ubitx on other sstv software,but not this one. this one is mainly for my ubuntu linux laptop Im still playing with the settings and so forth.
73 David ac9xh
On Wednesday, June 15, 2022 at 02:27:47 PM EDT, david todd <ac9xh@...> wrote:
Ashhar,
I use Qsstv on a laptop that has ubuntu installed. seems to work ok. The setup is similar to the wsjtx and other software.
I have received some sstv signals with it but have not transmitted yet with it.Version i have is 9.4.4. Also ,Ashhar, after installation you can click on users guide and it will give a complete users guide on installation,usages,etc.
73 David ac9xh
On Tuesday, June 14, 2022 at 10:35:20 PM EDT, Ashhar Farhan <farhanbox@...> wrote:
Not to hijack this thread... Has anyone got qsstv going on the ubitx? - f
Evan and Jonathan,
I use the 817,ft857, and also 3 others work for me in the yaseu section.Then set the thing to vox,make sure you click on what ur using on output and input of audio on settings ,so the program can identify the settings also.
My own usage ,i have to start wstjx first,then turn on the ubitx.I found on my imac,after starting ft8 software,i then have to plug in dongle and then the 3.5mm cable.if i dont it either wont transmit ,or receive depending on my imacs mood.:). Has never crashed though. And i use jtdx with the imac with this setup and found the jtdx gives more decodes compared to wsjt-x
with my imac,running catalina ,i have only one headphone jack. no mic jack but has a built in mic.Also My unit doesnt have a dvd/cd rom drive either. I just use thumbdrives to load software or copy,etc.but i also use a soundcard dongle for usb,and of course the 3.5mm cable to heandphone jack.
Basically my imac is a slim fast barebones imac,that runs about everything.I have contacted many countries with this setup,and have fldigi installed for psk31 and rtty .I also have SSTV software installed . But i still had to disable one conductor to prevent the ubitx from going into constant transmit.
even with dongle the setup is basically the same. one cable for audio output and one cable used for microphone input
Seems to work pretty good. Also, I believe on older posts,which you can find in the search box type in ft8 on ubitx or whatever that sounds like it,and the older posts have alot of info regarding the microphone cable conductor issue
73 David ac9xh
On Tuesday, June 14, 2022 at 12:25:40 AM EDT, Evan Hand < elhandjr@...> wrote:
Jonathan,
David AC9XH is correct in his advice.? The only difference was that my laptop audio did not work very well, so I bought an $8 USB dongle that solved the audio issues after adding 600ohm isolation transformers.
I did need to add ferrites on the cables between the computer and uBitx to limit RF getting into the computer/uBitx.
In the WSJT-X software, you use the Yeasu FT-817 as the radio selection.? I have disconnected the uBitx from my PC as I am now using a QRP-Labs QDX to play with FT8/FT4, so I do not have the details of all the other settings on the radio page.? Maybe David can share any details that he is using.
Have fun!
73
Evan
AC9TU
|
Re: ft8 interface connections
#ft8
Ashhar,
forgot to inform you that the users guid is accessible thru the help tab.
I have used ubitx on other sstv software,but not this one. this one is mainly for my ubuntu linux laptop Im still playing with the settings and so forth.
73 David ac9xh
On Wednesday, June 15, 2022 at 02:27:47 PM EDT, david todd <ac9xh@...> wrote:
Ashhar,
I use Qsstv on a laptop that has ubuntu installed. seems to work ok. The setup is similar to the wsjtx and other software.
I have received some sstv signals with it but have not transmitted yet with it.Version i have is 9.4.4. Also ,Ashhar, after installation you can click on users guide and it will give a complete users guide on installation,usages,etc.
73 David ac9xh
On Tuesday, June 14, 2022 at 10:35:20 PM EDT, Ashhar Farhan <farhanbox@...> wrote:
Not to hijack this thread... Has anyone got qsstv going on the ubitx? - f
Evan and Jonathan,
I use the 817,ft857, and also 3 others work for me in the yaseu section.Then set the thing to vox,make sure you click on what ur using on output and input of audio on settings ,so the program can identify the settings also.
My own usage ,i have to start wstjx first,then turn on the ubitx.I found on my imac,after starting ft8 software,i then have to plug in dongle and then the 3.5mm cable.if i dont it either wont transmit ,or receive depending on my imacs mood.:). Has never crashed though. And i use jtdx with the imac with this setup and found the jtdx gives more decodes compared to wsjt-x
with my imac,running catalina ,i have only one headphone jack. no mic jack but has a built in mic.Also My unit doesnt have a dvd/cd rom drive either. I just use thumbdrives to load software or copy,etc.but i also use a soundcard dongle for usb,and of course the 3.5mm cable to heandphone jack.
Basically my imac is a slim fast barebones imac,that runs about everything.I have contacted many countries with this setup,and have fldigi installed for psk31 and rtty .I also have SSTV software installed . But i still had to disable one conductor to prevent the ubitx from going into constant transmit.
even with dongle the setup is basically the same. one cable for audio output and one cable used for microphone input
Seems to work pretty good. Also, I believe on older posts,which you can find in the search box type in ft8 on ubitx or whatever that sounds like it,and the older posts have alot of info regarding the microphone cable conductor issue
73 David ac9xh
On Tuesday, June 14, 2022 at 12:25:40 AM EDT, Evan Hand < elhandjr@...> wrote:
Jonathan,
David AC9XH is correct in his advice.? The only difference was that my laptop audio did not work very well, so I bought an $8 USB dongle that solved the audio issues after adding 600ohm isolation transformers.
I did need to add ferrites on the cables between the computer and uBitx to limit RF getting into the computer/uBitx.
In the WSJT-X software, you use the Yeasu FT-817 as the radio selection.? I have disconnected the uBitx from my PC as I am now using a QRP-Labs QDX to play with FT8/FT4, so I do not have the details of all the other settings on the radio page.? Maybe David can share any details that he is using.
Have fun!
73
Evan
AC9TU
|
Re: ft8 interface connections
#ft8
Ashhar,
I use Qsstv on a laptop that has ubuntu installed. seems to work ok. The setup is similar to the wsjtx and other software.
I have received some sstv signals with it but have not transmitted yet with it.Version i have is 9.4.4. Also ,Ashhar, after installation you can click on users guide and it will give a complete users guide on installation,usages,etc.
73 David ac9xh
On Tuesday, June 14, 2022 at 10:35:20 PM EDT, Ashhar Farhan <farhanbox@...> wrote:
Not to hijack this thread... Has anyone got qsstv going on the ubitx? - f
Evan and Jonathan,
I use the 817,ft857, and also 3 others work for me in the yaseu section.Then set the thing to vox,make sure you click on what ur using on output and input of audio on settings ,so the program can identify the settings also.
My own usage ,i have to start wstjx first,then turn on the ubitx.I found on my imac,after starting ft8 software,i then have to plug in dongle and then the 3.5mm cable.if i dont it either wont transmit ,or receive depending on my imacs mood.:). Has never crashed though. And i use jtdx with the imac with this setup and found the jtdx gives more decodes compared to wsjt-x
with my imac,running catalina ,i have only one headphone jack. no mic jack but has a built in mic.Also My unit doesnt have a dvd/cd rom drive either. I just use thumbdrives to load software or copy,etc.but i also use a soundcard dongle for usb,and of course the 3.5mm cable to heandphone jack.
Basically my imac is a slim fast barebones imac,that runs about everything.I have contacted many countries with this setup,and have fldigi installed for psk31 and rtty .I also have SSTV software installed . But i still had to disable one conductor to prevent the ubitx from going into constant transmit.
even with dongle the setup is basically the same. one cable for audio output and one cable used for microphone input
Seems to work pretty good. Also, I believe on older posts,which you can find in the search box type in ft8 on ubitx or whatever that sounds like it,and the older posts have alot of info regarding the microphone cable conductor issue
73 David ac9xh
On Tuesday, June 14, 2022 at 12:25:40 AM EDT, Evan Hand < elhandjr@...> wrote:
Jonathan,
David AC9XH is correct in his advice.? The only difference was that my laptop audio did not work very well, so I bought an $8 USB dongle that solved the audio issues after adding 600ohm isolation transformers.
I did need to add ferrites on the cables between the computer and uBitx to limit RF getting into the computer/uBitx.
In the WSJT-X software, you use the Yeasu FT-817 as the radio selection.? I have disconnected the uBitx from my PC as I am now using a QRP-Labs QDX to play with FT8/FT4, so I do not have the details of all the other settings on the radio page.? Maybe David can share any details that he is using.
Have fun!
73
Evan
AC9TU
|
Mobile Ubitx thoughts - Re: [BITX20] 16x2 LCD mod for uBITX v6
My Mobile Ubitx use thoughts:
Suggest adding a tuner-spinner lock out switch.
Add a separate tuner-spinner activation push button.
You may want to change the Ubitx default tuner-spinner to a detent-spinner.
These changes can help when in a bouncing mobile environment.
The Ubitx¡¯s default tuner firmware is not optimize for a tuner knob being bump.
As a blind individual using a Ubitx,
1. I first feel for with my hands and locate the rig on the table.
2. Then I feel for and locate the spinner knob.
3. At this point have now bump the tuner knob and the frequency has move. This is due to the knob was bump in the process of locating the knob.
It is harder to bump a detent-type-tuner.
Also a lock-out-switch will keep the tuner-spinner from being bump.
Changes to Ubitx tuner-spinner firmware could correct this situation.
Dave WD8AJQ
Sent from my iPhoneSE
toggle quoted message
Show quoted text
On Jun 14, 2022, at 6:10 AM, David Wilcox K8WPE via groups.io <Djwilcox01@...> wrote:
?I have a V6 and it is touchy enough that I don¡¯t think it would be stable on frequency from bouncing around in a car. Just my opinion as I haven¡¯t tried it. But most mobile radios I have used are built on more solid chassis and much heavier where the stability parts are concerned. Try it and let us know.
Dave K8WPE
David J. Wilcox¡¯s iPad
On Jun 14, 2022, at 12:59 AM, Ken N2VIP <ken@...> wrote:
?That sounds like a challenging interface for a mobile radio (the joystick and/or directional buttons, not the LCD display). It would likely require a lot of user attention for mobile operation.
It does sound interesting - let us know how it turns out.
Ken, N2VIP
On Jun 13, 2022, at 23:45, VU3KFK <ashok.das81@...> wrote: I am thinking to use a 20x2 or 40x2 LCD screen and navigation within the menus to be done by a joystick or some directional buttons.
|
yearly bitxmap.com diatribe
I just renewed for another year.? The map has been up for about 4-1/2 years and with its own domain name for 4.? We have 784 points mapped and close to 62k views.? While this is not about money and I am not asking for a penny it is funny to me that I have now probably spent more on the domain name than on my first bitx kit from hfsigs.? Every year we do the same dance.? I ask if I should keep it going and we get a flood of positive responses as well as a bunch of "I had no idea it existed" comments.? Usually this is followed by several robust feature requests to which I always respond go for it, it is our map not my map.? Then the maps sits virtually unopened until I make noise again.? As a refresher, the map is just a google my maps page with a simple domain redirect.? The time is coming for me to step down from my self appointed role of chief pseudo cartographer.? The domain is good for another year and the map is safe.? Ideally I would like to see someone step up who has the ability to improve what we started.? Baring that, at least someone who will maintain the barely adequate project I started and keep it open and free forever.? Yes I know the map currently relies on google so it is not really open or free free.? Once you have proven you are worthy of the task by completing thirteen secret tests challenging your intellectual and telekinetic abilities or just asking, I will transfer the domain name and kmz file.? If no one is interested I will probably just renew it again next year and repost this same exact message.
--
|
Re: Farhan's Analog Again The Daylight Radio
Paulo, Just wait a week. I am almost done with the write up
Paulo,
Connect Q11 collector to the junction of R45 and R48.
Connect the open end of R51 to TX line.
In 602 the OUT-B is pin 5
Audio is for phones only.
Raj
On 15/06/2022 4:12 PM, Paul Allison
wrote:
Hi,
I'm building "allanalog" with 1206 smd components on a ? cnc
milled pcb ( Easyeda, Flatcam, very old? cncusb , all freeware )
All the circuit except BPF, LPF and power rf section are on a
86x66mm pcb, ( VFO 32x16mm) non the smallest possible,
but I'm a 66 y. o. amateur, not 007......Some questions:
really collector of Q11 is not connected? Why?
On SA602 there are two pins named "2" I suppose non connected
are pins "5": right?
On audio output is there enough power for a loudspeaker or only
for an headphone?
I do not have a 3d cnc, only a cnc milling machine: are toroid
made of plastic? Dimensions?
2.15uH are 32.8T......2uH 31.6T....1.6uH 28.3T ?
Will someone sell the 3d cnc part of the VFO ?
Thank you
Paolo from Italy
Il 03/06/2022 12:57, Raj vu2zap ha
scritto:
Q11 collector not connected Farhan.
Raj
At 03/06/2022, you wrote:
Pete and others who
requested the circuit, here it is:
1. The circuit is still to evolve into a CW/SSB transceiver,
at present it is only SSB.
2. The relay used to switch the crystal and low-pass filters
can be replaced with some tricky but simple electronic T/R. I
just took the simple route out.
.3 The PA + driver are the only places? where bifilar
transformers are used, I will eliminate that as well.?
The write-up is still being edited on?
, I publish it on when I am done.
On Fri, May 27, 2022 at 2:12 AM Pete Eaton <zx97lite@...>
wrote:
- Hi Farhan,
- Any luck finding the Daylight Radio schematic.
- Thanks!
- Pete?? WB9FLW
- On Tuesday, May 24, 2022, 07:29:08 AM CDT, Pete Eaton
<zx97lite@...>
wrote:
- No problem Farhan, appreciate you doing this for me.
- Have a safe trip home.
- Pete?? WB9FLW
- On Tuesday, May 24, 2022, 07:04:41 AM CDT, Ashhar Farhan
<farhanbox@...>
wrote:
- Pete,
- I will, my thinkpad is acting up and I guess I will have
to wait until I reach Hyderabad to fix it.
- - f
- On Mon, May 23, 2022, 5:14 AM Pete Eaton <zx97lite@...>
wrote:
- Hi Farhan,
- Are you still going to send the Circuit Diagram.
- If not I totally understand and will wait for the
FDIM Proceedings to get here.
- Thanks!
- Pete?? WB9FLW
- On Saturday, May 21, 2022, 04:12:21 PM CDT, Pete
Eaton <zx97lite@...>
wrote:
- Thanks, that would be *Great*
- Pete
- On Saturday, May 21, 2022, 04:06:38 PM CDT, Ashhar
Farhan <farhanbox@...>
wrote:
- I guess I can send you the circuit diagram all the
same
- On Sat, May 21, 2022, 4:20 PM Pete Eaton <zx97lite@...>
wrote:
- Hi Farhan,
- I was on Zoom so I was taking notes as fast as I
could during your talk.?? Also took a mental
snapshot of the Schematic.
- Look forward to getting the Proceedings and your
Paper.
- Thanks for all you do!
- Pete?? WB9FLW?
- P.S.? Big Cosby, Stills & Nash Fan here as
well !
- On Saturday, May 21, 2022, 03:02:42 PM CDT,
Ashhar Farhan <farhanbox@...>
wrote:
- Pete,
- Thank you for summing it up.?? "Daylight Again"
is a cosby, still and nash song about the losses
and memory. I thought it was appropriate for
dayton after 2 years.
- The bandpass filter as well as the crystal
filter is shared.
- I wrote the paper for thr FDIM. We will have to
wait for them to publish it first.
- - f
- On Sat, May 21, 2022, 2:44 PM Pete Eaton <zx97lite@...>
wrote:
- Hi Nigel,
- Quick intro name is Pete, call WB9FLW, qth
Maryville, IL USA.
- For several years now I have wanted to build
a BITX Rig from scratch. The Picture you put
on of your
40 Meter Transceiver back in 2017 really
caught my eye.
- Farhan gave a wonderful presentation at FDIM
on Thursday that really got my attention. His
talk was on a new Analog Rig called "The
Daylight Radio" (not really sure were the name
came from).
- Key Points:
- * Hight Performance 7 MHz 5 Watt SSB
Transceiver?
- * Draws just 24 ma of Current
- * 90 dB Dynamic Range, 80 dB close-in
Dynamic Range
- * 3 D Printed Rock Stable, Low Noise PTO
- * Uses 3D Printed Air Core Toroids!
- * Junk Box Parts
- * Cost Less than $20 to Build
- * Simple to Assemble
- * Undo the Love - who needs 50 Ohms
- * Uses 5 MHz QER Filter
- * VFO is at a very low frequency of 2 MHz,
able to decode FT8 Signals no Problem
- * Receiver Mixers are pairs of JFET 310 in
Cascode
- * Active Devices 2n2222a, J310, IRF510
- * IC's 5532A, NE602
- * Uses a PTO, No Air Variable Caps or
Vernier Dial Needed!
- * PTO is Linear
- * It is no more complicated that the BITX
Rigs
- This is *not* a Bi Directional aka BITX Rig.
Only thing shared is the Crystal Filter. One
can build the Receiver first, get it operating
before constructing the Transmitter.
- He finished the Rig just a few days ago and
wrote the Paper on the Flight coming over
here, it should be posted on in a
few days.
- I thought I would contact Folks that I
thought might me interested thus this Email to
you.
- When I get any more info from Farhan I will
forward it to you asap.
- Will try to stir up some more interest.
- Best Wishes,
- Pete?? WB9FLW
|
Re: Farhan's Analog Again The Daylight Radio
Paulo,
Connect Q11 collector to the junction of R45 and R48.
Connect the open end of R51 to TX line.
In 602 the OUT-B is pin 5
Audio is for phones only.
Raj
On 15/06/2022 4:12 PM, Paul Allison
wrote:
toggle quoted message
Show quoted text
Hi,
I'm building "allanalog" with 1206 smd components on a ? cnc
milled pcb ( Easyeda, Flatcam, very old? cncusb , all freeware )
All the circuit except BPF, LPF and power rf section are on a
86x66mm pcb, ( VFO 32x16mm) non the smallest possible,
but I'm a 66 y. o. amateur, not 007......Some questions:
really collector of Q11 is not connected? Why?
On SA602 there are two pins named "2" I suppose non connected
are pins "5": right?
On audio output is there enough power for a loudspeaker or only
for an headphone?
I do not have a 3d cnc, only a cnc milling machine: are toroid
made of plastic? Dimensions?
2.15uH are 32.8T......2uH 31.6T....1.6uH 28.3T ?
Will someone sell the 3d cnc part of the VFO ?
Thank you
Paolo from Italy
Il 03/06/2022 12:57, Raj vu2zap ha
scritto:
Q11 collector not connected Farhan.
Raj
At 03/06/2022, you wrote:
Pete and others who
requested the circuit, here it is:
1. The circuit is still to evolve into a CW/SSB transceiver,
at present it is only SSB.
2. The relay used to switch the crystal and low-pass filters
can be replaced with some tricky but simple electronic T/R. I
just took the simple route out.
.3 The PA + driver are the only places? where bifilar
transformers are used, I will eliminate that as well.?
The write-up is still being edited on?
, I publish it on when I am done.
On Fri, May 27, 2022 at 2:12 AM Pete Eaton <zx97lite@...>
wrote:
- Hi Farhan,
- Any luck finding the Daylight Radio schematic.
- Thanks!
- Pete?? WB9FLW
- On Tuesday, May 24, 2022, 07:29:08 AM CDT, Pete Eaton
<zx97lite@...>
wrote:
- No problem Farhan, appreciate you doing this for me.
- Have a safe trip home.
- Pete?? WB9FLW
- On Tuesday, May 24, 2022, 07:04:41 AM CDT, Ashhar Farhan
<farhanbox@...>
wrote:
- Pete,
- I will, my thinkpad is acting up and I guess I will have
to wait until I reach Hyderabad to fix it.
- - f
- On Mon, May 23, 2022, 5:14 AM Pete Eaton <zx97lite@...>
wrote:
- Hi Farhan,
- Are you still going to send the Circuit Diagram.
- If not I totally understand and will wait for the
FDIM Proceedings to get here.
- Thanks!
- Pete?? WB9FLW
- On Saturday, May 21, 2022, 04:12:21 PM CDT, Pete
Eaton <zx97lite@...>
wrote:
- Thanks, that would be *Great*
- Pete
- On Saturday, May 21, 2022, 04:06:38 PM CDT, Ashhar
Farhan <farhanbox@...>
wrote:
- I guess I can send you the circuit diagram all the
same
- On Sat, May 21, 2022, 4:20 PM Pete Eaton <zx97lite@...>
wrote:
- Hi Farhan,
- I was on Zoom so I was taking notes as fast as I
could during your talk.?? Also took a mental
snapshot of the Schematic.
- Look forward to getting the Proceedings and your
Paper.
- Thanks for all you do!
- Pete?? WB9FLW?
- P.S.? Big Cosby, Stills & Nash Fan here as
well !
- On Saturday, May 21, 2022, 03:02:42 PM CDT,
Ashhar Farhan <farhanbox@...>
wrote:
- Pete,
- Thank you for summing it up.?? "Daylight Again"
is a cosby, still and nash song about the losses
and memory. I thought it was appropriate for
dayton after 2 years.
- The bandpass filter as well as the crystal
filter is shared.
- I wrote the paper for thr FDIM. We will have to
wait for them to publish it first.
- - f
- On Sat, May 21, 2022, 2:44 PM Pete Eaton <zx97lite@...>
wrote:
- Hi Nigel,
- Quick intro name is Pete, call WB9FLW, qth
Maryville, IL USA.
- For several years now I have wanted to build
a BITX Rig from scratch. The Picture you put
on of your
40 Meter Transceiver back in 2017 really
caught my eye.
- Farhan gave a wonderful presentation at FDIM
on Thursday that really got my attention. His
talk was on a new Analog Rig called "The
Daylight Radio" (not really sure were the name
came from).
- Key Points:
- * Hight Performance 7 MHz 5 Watt SSB
Transceiver?
- * Draws just 24 ma of Current
- * 90 dB Dynamic Range, 80 dB close-in
Dynamic Range
- * 3 D Printed Rock Stable, Low Noise PTO
- * Uses 3D Printed Air Core Toroids!
- * Junk Box Parts
- * Cost Less than $20 to Build
- * Simple to Assemble
- * Undo the Love - who needs 50 Ohms
- * Uses 5 MHz QER Filter
- * VFO is at a very low frequency of 2 MHz,
able to decode FT8 Signals no Problem
- * Receiver Mixers are pairs of JFET 310 in
Cascode
- * Active Devices 2n2222a, J310, IRF510
- * IC's 5532A, NE602
- * Uses a PTO, No Air Variable Caps or
Vernier Dial Needed!
- * PTO is Linear
- * It is no more complicated that the BITX
Rigs
- This is *not* a Bi Directional aka BITX Rig.
Only thing shared is the Crystal Filter. One
can build the Receiver first, get it operating
before constructing the Transmitter.
- He finished the Rig just a few days ago and
wrote the Paper on the Flight coming over
here, it should be posted on in a
few days.
- I thought I would contact Folks that I
thought might me interested thus this Email to
you.
- When I get any more info from Farhan I will
forward it to you asap.
- Will try to stir up some more interest.
- Best Wishes,
- Pete?? WB9FLW
|
Re: Farhan's Analog Again The Daylight Radio
Hi,
I'm building "allanalog" with 1206 smd components on a ? cnc
milled pcb ( Easyeda, Flatcam, very old? cncusb , all freeware )
All the circuit except BPF, LPF and power rf section are on a
86x66mm pcb, ( VFO 32x16mm) non the smallest possible,
but I'm a 66 y. o. amateur, not 007......Some questions:
really collector of Q11 is not connected? Why?
On SA602 there are two pins named "2" I suppose non connected are
pins "5": right?
On audio output is there enough power for a loudspeaker or only
for an headphone?
I do not have a 3d cnc, only a cnc milling machine: are toroid
made of plastic? Dimensions?
2.15uH are 32.8T......2uH 31.6T....1.6uH 28.3T ?
Will someone sell the 3d cnc part of the VFO ?
Thank you
Paolo from Italy
Il 03/06/2022 12:57, Raj vu2zap ha
scritto:
Q11 collector not connected Farhan.
Raj
At 03/06/2022, you wrote:
Pete and others who
requested
the circuit, here it is:
1. The circuit is still to evolve into a CW/SSB transceiver, at
present
it is only SSB.
2. The relay used to switch the crystal and low-pass filters can
be
replaced with some tricky but simple electronic T/R. I just took
the
simple route out.
.3 The PA + driver are the only places? where bifilar
transformers are
used, I will eliminate that as well.?
The write-up is still being edited on?
, I publish it on when
I am done.
On Fri, May 27, 2022 at 2:12 AM Pete Eaton
<zx97lite@...>
wrote:
- Hi Farhan,
- Any luck finding the Daylight Radio schematic.
- Thanks!
- Pete?? WB9FLW
- On Tuesday, May 24, 2022, 07:29:08 AM CDT, Pete Eaton
<zx97lite@...>
wrote:
- No problem Farhan, appreciate you doing this for me.
- Have a safe trip home.
- Pete?? WB9FLW
- On Tuesday, May 24, 2022, 07:04:41 AM CDT, Ashhar Farhan
<farhanbox@...>
wrote:
- Pete,
- I will, my thinkpad is acting up and I guess I will have
to wait
until I reach Hyderabad to fix it.
- - f
- On Mon, May 23, 2022, 5:14 AM Pete Eaton
<zx97lite@...>
wrote:
- Hi Farhan,
- Are you still going to send the Circuit Diagram.
- If not I totally understand and will wait for the FDIM
Proceedings to
get here.
- Thanks!
- Pete?? WB9FLW
- On Saturday, May 21, 2022, 04:12:21 PM CDT, Pete Eaton
<zx97lite@...>
wrote:
- Thanks, that would be *Great*
- Pete
- On Saturday, May 21, 2022, 04:06:38 PM CDT, Ashhar
Farhan
<farhanbox@...>
wrote:
- I guess I can send you the circuit diagram all the
same
- On Sat, May 21, 2022, 4:20 PM Pete Eaton
<zx97lite@...>
wrote:
- Hi Farhan,
- I was on Zoom so I was taking notes as fast as I
could during your
talk.?? Also took a mental snapshot of the
Schematic.
- Look forward to getting the Proceedings and your
Paper.
- Thanks for all you do!
- Pete?? WB9FLW?
- P.S.? Big Cosby, Stills & Nash Fan here as
well !
- On Saturday, May 21, 2022, 03:02:42 PM CDT, Ashhar
Farhan
<farhanbox@...>
wrote:
- Pete,
- Thank you for summing it up.?? "Daylight Again" is
a
cosby, still and nash song about the losses and
memory. I thought it was
appropriate for dayton after 2 years.
- The bandpass filter as well as the crystal filter
is shared.
- I wrote the paper for thr FDIM. We will have to
wait for them to
publish it first.
- - f
- On Sat, May 21, 2022, 2:44 PM Pete Eaton
<zx97lite@...>
wrote:
- Hi Nigel,
- Quick intro name is Pete, call WB9FLW, qth
Maryville, IL
USA.
- For several years now I have wanted to build a
BITX Rig from scratch.
The Picture you put on
of your
40 Meter Transceiver back in 2017 really caught
my eye.
- Farhan gave a wonderful presentation at FDIM
on Thursday that really
got my attention. His talk was on a new Analog
Rig called "The
Daylight Radio" (not really sure were the name
came from).
- Key Points:
- * Hight Performance 7 MHz 5 Watt SSB
Transceiver?
- * Draws just 24 ma of Current
- * 90 dB Dynamic Range, 80 dB close-in Dynamic
Range
- * 3 D Printed Rock Stable, Low Noise PTO
- * Uses 3D Printed Air Core Toroids!
- * Junk Box Parts
- * Cost Less than $20 to Build
- * Simple to Assemble
- * Undo the Love - who needs 50 Ohms
- * Uses 5 MHz QER Filter
- * VFO is at a very low frequency of 2 MHz,
able to decode FT8 Signals
no Problem
- * Receiver Mixers are pairs of JFET 310 in
Cascode
- * Active Devices 2n2222a, J310, IRF510
- * IC's 5532A, NE602
- * Uses a PTO, No Air Variable Caps or Vernier
Dial Needed!
- * PTO is Linear
- * It is no more complicated that the BITX Rigs
- This is *not* a Bi Directional aka BITX Rig.
Only thing shared is the
Crystal Filter. One can build the Receiver
first, get it operating before
constructing the Transmitter.
- He finished the Rig just a few days ago and
wrote the Paper on the
Flight coming over here, it should be posted on
in a few
days.
- I thought I would contact Folks that I thought
might me interested
thus this Email to you.
- When I get any more info from Farhan I will
forward it to you
asap.
- Will try to stir up some more interest.
- Best Wishes,
- Pete?? WB9FLW
|
Vic WA4THR
Raj vu2zap
Paul Allison