Jim, W0EB
Thank-you for filling me in on the history.? It makes perfect sense that they would not want to redesign the Raduino board when a simple change solves the issue.
All,
Apologize to the group for expressing my curiosity in a thread that was focused on a related, but different issue.? Will keep my curiosity in check in the future.
73
Evan
AC9TU
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Hello everyone! I am currently playing a little with my Ubitx and I have an issue which bothers we since the beginning. The microphone gain is not pleasing me. I literally have to scream into it for having a conversation with somebody. I have modified R65 from 1K to 4.7K and R63 from 47 ohms to around 20, can't remember the exact value. I can say the mod works but still not how I want. Can someone advise me about this matter? I am also considering altering the bias resistor for the electret mic. I have made some experiments with a cheep-chinese audio amplifier running on 3.7 V and I have made my conclusion that I have the best gain and clearness of the sound if I bias the electret mic with exactly 10K resistor, not 7 not 11. I am not an expert in electronics, this is just what I have noticed. Is there a chance to get some more signal from the uBitx mic by changing the bias resistor?
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My board also experienced the microphonic issue when first built.? I then did some case modes, rewired, added some snap on ferrites to dampen RF, tuned it up again, and over the multiple times connecting and reconnecting it went away.? I do not really know what was causing the issue.? I suspect dirt or oil in one of the connections.? My biggest suspect was the Raduino to uBitx connection.? In the process of connecting and disconnecting, as well as turning on and off the rig, I believe that I worked out the partial connection that was microphonic.? I never did find what the original cause was. It may still be lurking, waiting to jump up and get me again.
73
Evan
AC9TU
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Re: No audio from last week may have a solution
it is a .1 microFarad (100 nF) dc blocking capacitor for the BFO.? The detector will not work without that signal, and it cannot be just bridged.? I would get a surface mount capacitor to replace it, however a leaded capacitor with the leads kept short would work.? If you go with a leaded capacitor be sure to keep it close and flat to the board so it does not get in the way of the display when it is plugged in.??
If it came from the factory that way, I would contact HF Signals to see if they will send you a new capacitor, if not replace the Raduino board.? If you can solder, then the board shipping will be more than having them send you a replacement capacitor and putting it in yourself.
73
Evan
AC9TU
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Jeff,
Please let us know what software you are trying to use and give us the URL for the source so we can be more effective at helping.
The statements "I tried loading the original software for the nano" and "It was working fine but I wanted to upgrade the software"
are conflicting from where I sit at the moment.
Stay mindful of the required pull-up on the morse key pad.
For a guy like me, I'd rather have the pull-up hardwired / soldered on the raduino board, as getting into accidental transmit mode can be a failure mode.
Too many things on the mind, distractions, and fatigue set in on all of us. (human error) Plus more interconnects and possible failure points (mechanical fault).
Regards,
Gary
AG5TX
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Re: No audio from last week may have a solution
Cap is in series, so that's a DC blocking, AC coupling cap from CLK0 on the SI5351.
Regards,
Gary
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Mine also, but not enough to be an issue.? Have not figured out why, but there was another post regarding this (I forget the exact...) a little while back.
Woody? KZ4AK
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On 12/20/2018 11:34, Peter Russell wrote: Hello from a newbie!
I've just completed the build of my uBITX and I have to say, I'm impressed!
Just one little niggle - and I'm sure I've seen it mentioned somewhere but I can't remember where - I seem to have a bit of microphony. Can anyone point me in the right direction?
Thanks.
Peter, G8FWY.
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Most likely the torroid chokes.. Hot melt glue or wax them in place. 73 de Mike
On Thursday, December 20, 2018, 11:01:00 a.m. GMT-5, Peter Russell <peter.russell@...> wrote:
When I say "microphony" I mean that the circuit boards are acting as a
microphone - any slight tap on the case can be heard loudly in the phones.
I haven't tried it on transmit yet, so I don't know whether it will be a
problem there also.
I'm sure I've seen reference to it somewhere but I'm not sure where.
Any ideas will be welcome.
Peter. G8FWY
On 20/12/2018 15:05, iz oos wrote: > What do you mean exactly with 'bit' of microphone? If you refer to low > average SSB output, I replaced to add another resistor (47ohm)in > parallel to R63 and worked nicely. However late November Barry Underwood > suggested to use a VOGAD. So I have just made (I still need to test it) > another external box with that compressor to use also with other SSB > QRPs, like ILER. I have a mil surplus radio that use the VOGAD and I > have always been impressed by it, as you can just whisper and have a lot > of output. See the attached file made by Barry. > > > Il 20/dic/2018 12:35, "Peter Russell" < peter.russell@... > <mailto: peter.russell@...>> ha scritto: > >? ? Hello from a newbie! >? ? I've just completed the build of my uBITX and I have to say, I'm >? ? impressed! >? ? Just one little niggle - and I'm sure I've seen it mentioned >? ? somewhere but I can't remember where - I seem to have a bit of >? ? microphony. Can anyone point me in the right direction? >? ? Thanks. >? ? Peter, G8FWY. > >? ? --- >? ? This email has been checked for viruses by AVG. >? ? > > > > >
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When I say "microphony" I mean that the circuit boards are acting as a microphone - any slight tap on the case can be heard loudly in the phones.
I haven't tried it on transmit yet, so I don't know whether it will be a problem there also.
I'm sure I've seen reference to it somewhere but I'm not sure where.
Any ideas will be welcome.
Peter. G8FWY
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On 20/12/2018 15:05, iz oos wrote: What do you mean exactly with 'bit' of microphone? If you refer to low average SSB output, I replaced to add another resistor (47ohm)in parallel to R63 and worked nicely. However late November Barry Underwood suggested to use a VOGAD. So I have just made (I still need to test it) another external box with that compressor to use also with other SSB QRPs, like ILER. I have a mil surplus radio that use the VOGAD and I have always been impressed by it, as you can just whisper and have a lot of output. See the attached file made by Barry.
Il 20/dic/2018 12:35, "Peter Russell" <peter.russell@... <mailto:peter.russell@...>> ha scritto:
Hello from a newbie!
I've just completed the build of my uBITX and I have to say, I'm
impressed!
Just one little niggle - and I'm sure I've seen it mentioned
somewhere but I can't remember where - I seem to have a bit of
microphony. Can anyone point me in the right direction?
Thanks.
Peter, G8FWY.
---
This email has been checked for viruses by AVG.
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Re: Ubitx V4, looking for a silkscreen pcb printout showing component placement.
Thank you, Kurt, will find and download these photos for future reference.
MicroBitx is now working, had installed what I turns out to have been a corrupt version of the latest KD8CEC sketch, BFO clock was very off frequency so no demod or mod.
Re loaded the original HF SIGNALS sketch and all burst into life.
Fresh download and install of the same CEC sketch now working perfectly.
Moral, I should have known better and checked the basics first before looking for a more complex fault.
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Re: No audio from last week may have a solution
It is on the raduino. I think it smooths the line to the demodulation stage
Sent from my Huawei Mobile
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-------- Original Message --------
Subject: Re: [BITX20] No audio from last week may have a solution
From: "Sascha Bohnet | DL5SMB via Groups.Io"
To: [email protected]
CC:
Where exactly? is C4? I just can't see it? - neither in the schematic nor on the board?
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I am / was really enthused about the ubitx concept. I really dont mind doing the mods or the cost. My main issue is not wasting time on a mod that doesnt really work which is why I want the designer to sign off on the mod. It would be nice if there was an easier way to find "approved " mods on his web sight ubitx.net seems better organized.
My ubitx may be in the junk drawer but that drawer is not locked. I will wait awhile and see what comes up.
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Hi all, it was received in this way by HF signals so I guess it was damaged by mistake. As reading all the comments it is pretty shure that it was accidentally so I will bent them back to their original position.
I thank all of you for the help given and wish you all merry Christmas and a good and healthy 2019
Best regards,
Kees
PA1CJT
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What do you mean exactly with 'bit' of microphone? If you refer to low average SSB output, I replaced to add another resistor (47ohm)in parallel to R63 and worked nicely. However late November Barry Underwood suggested to use a VOGAD. So I have just made (I still need to test it) another external box with that compressor to use also with other SSB QRPs, like ILER. I have a mil surplus radio that use the VOGAD and I have always been impressed by it, as you can just whisper and have a lot of output. See the attached file made by Barry.
Il 20/dic/2018 12:35, "Peter Russell" < peter.russell@...> ha scritto: Hello from a newbie!
I've just completed the build of my uBITX and I have to say, I'm impressed!
Just one little niggle - and I'm sure I've seen it mentioned somewhere but I can't remember where - I seem to have a bit of microphony. Can anyone point me in the right direction?
Thanks.
Peter, G8FWY.
---
This email has been checked for viruses by AVG.
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Older versions had the NANO mounted on the front of the board, soldered in place - If they put a socket on the front, the NANO would stick out too far and and short against the back of the display which was plugged into the front of the Raduino. ?
They started putting the NANO in a socket on the back side of the Raduino which required the pins to be soldered on the NANO differently. ?No problems with the display shorting out and maybe destroying either the display OR the NANO - it happened more than once with the old way of mounting.
Jim, W0EB
------ Original Message ------
Sent: 12/20/2018 8:18:49 AM
Subject: Re: [BITX20] Connector pins bent on arrival #ubitx-help
Evan, ?we don't have to become Jamesbond, on this issue, normalize and use them. All the best
On Thu, Dec 20, 2018 at 6:00 PM Evan Hand < elhandjr@...> wrote: My curiosity is why it was mounted this way.? It requires that you purchase nano replacements without the headers soldered in place, as they are upside down from "normal" installation.? It also restricts access to the reset button on the nano (might allow for fewer power off reset requirements).? My only guess is some where between "shielding" and board trace routing.
Just curious, not a criticism.
Evan
AC9TU
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I have also received boards like this and all I did was use a smooth jaw
nose pliers to
bend back the pin to right angle and plug it in. Thats it!
Raj
At 20/12/2018, you wrote:
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Goodmorning dear OM's and
builders of the uBitX transceiver,
?
I recently bought the uBitX and looking at the components I noticed that
some pins of the Raduino board are bent. I do not know if that has been
done for a reason or just by accident. I would get confirmation that
these bent pins needs to be bent or to be adjusted before putting the
radio together. I can imagine that all should be placed in the connector
on the main board. The pins are bent in a way that they could never fit
in the connector.
The bent pins are those on the lefthand side when you look from the front
of the radio.
The picture below shows how i received the board. I guess it needs to be
corrected but perhaps someone can help me.
![[]](/g/BITX20/attachment/62720/)
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Evan, ?we don't have to become Jamesbond, on this issue, normalize and use them. All the best
On Thu, Dec 20, 2018 at 6:00 PM Evan Hand < elhandjr@...> wrote: My curiosity is why it was mounted this way.? It requires that you purchase nano replacements without the headers soldered in place, as they are upside down from "normal" installation.? It also restricts access to the reset button on the nano (might allow for fewer power off reset requirements).? My only guess is some where between "shielding" and board trace routing.
Just curious, not a criticism.
Evan
AC9TU
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Jeff,
It is simpler than it looks.
1: Open the Arduino IDE
2: From the files / open menu in the IDE, navigate to where you unzipped the KD8CEC archive to and open the file named ubitx_20.ino
This will load all of the files into the IDE.
You then need to edit the ubitx,.h file to reflect the display you are using.
This is simply matter of commenting or uncommenting the appropriate lines at he top of the file.
Use the upload button to compile and upload the firmware in the normal way.
73 de Barry G4BUD
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Hi Jeff:
The order doesn't make any difference. The IDE will arrange them alphabetically on the tabs in the IDE. However, if your files are such that only the file containing setup() and loop() is named ?.ino and the rest are *.cpp, it will place the *.ino file first in the tab list. I kinda like that, since there tends to be more going on during development in that file.
I would suggest a fresh download of the source code files, all of which must be in the same directory, and then a compile.
Jack, W8TEE
On Thursday, December 20, 2018, 7:22:11 AM EST, Jeff Davis via Groups.Io <ve3coj@...> wrote:
Hi Jack... I have a simple problem. I don't see any information on which ino files are to be put in sequence in the Arduino IDE if necessary.
I coped and pasted each file into the IDE and it compiled. When connected to the Bitx it got stuck on the calculation showing 7.15Mhz then it jumped into CW mode.
It was working fine but I wanted to upgrade the software... so now I have this problem. I'm missing something because it can't be this complicated!
Is there an order in which ino files go into the IDE? Jeff ve3coj
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Re: WSJT-X for uBITX using LINUX
I have attached screenshots of the settings I use in both wxjtx and js8call.? Both work well for me and I have had lots of QSOs with both
Brad KG5SPR
On Wed, Dec 19, 2018 at 11:46 PM brad martin via Groups.Io <emclinux= [email protected]> wrote: ?If possible can you screenshot ?your config window for the radio. I will compare it to mine in the morning. I am using Ubuntu 18.10 with wsjtx 2.0 and it runs just fine for me one I got the setting right.?
Brad Kg5spr I know this is an old thread but I just started playing with WSJT-X 2.0 FT-8 on my uBitX. I'm running it on Ubuntu 18.04.1 LTS. It runs OK, at least in receive mode...I haven't tried transmitting yet, but I'm having issues with the CAT connection. It appears to connect but I get a Hamlib error 'Command rejected by the rig while exchanging VFOs' when I try to test it. CAT works fine with the uBitX from Fldigi using Hamlib. In both cases I set it as FT-817.
Is anyone else seeing this? Any suggestions??
73...? ? Mark? ? AA7TA
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YO8UFO
VE3MIC
Jim Sheldon
Raj vu2zap
