Karan
Are you using the microphone cartridge that came with your uBITX V-5? Several people have tried to use other microphones and experienced low? audio level (low SSB output).? Some resolved the problem by enlarging? the hole in the microphone housing to allow more audio to reach the? electret cartridge. ?
Your 7.8 volts bias to the microphone seems about right. ?
Arv _._
On Thu, Apr 9, 2020 at 10:36 AM Praba Karan < vu3dxr@...> wrote: Recently I assembled ubitx V5 in? cabinet after a year long wait in my shack.
Ubitx V5, CEC v1.2 firmware Nextion display, modified bafeong mic.
Receiver working nice but with low audio like in V4.
During just pressing PTT, ubitx consuming about 1.2 amps at 12v, but it is not varied with sound in mic. Loud ' hhhelloooo' do not vary current consumed.
Also noted? during? just? pressing PTT, my swr/power meter displaying stable power output of 3 watts.?
I checked mic bias voltage, which is 7.8 volt.
Help me to identify root cause of these issues.
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Recently I assembled ubitx V5 in? cabinet after a year long wait in my shack.
Ubitx V5, CEC v1.2 firmware Nextion display, modified bafeong mic.
Receiver working nice but with low audio like in V4.
During just pressing PTT, ubitx consuming about 1.2 amps at 12v, but it is not varied with sound in mic. Loud ' hhhelloooo' do not vary current consumed.
Also noted? during? just? pressing PTT, my swr/power meter displaying stable power output of 3 watts.?
I checked mic bias voltage, which is 7.8 volt.
Help me to identify root cause of these issues.
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I know this issue has been addressed many times, and I need some hardware, not theory to enjoy the fruits of my labor. My bench is a small desk with a VOM, and loads of hope to actually see what is necessary to work on electronic circuitry. No complaint with the audio output on the AM band, but gets dicey trying to listen to CW in the upper ether. Hearing is not all that good as before. Any ready built or kits that would beat the low audio output in the upper bands? Sure would appreciate it. Thank you. 73/KH2EE
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Re: uBITX Version 6 construction manual
#ubitx
#v6
Nice simple instructions Jim, Thanks. -- ?
73
Mick VA3EPM?
p.s. We still have to watch out for “ID ten T” errors. :-)
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uBITX Version 6 construction manual
#ubitx
#v6
Since there have been a few posts on people having occasional troubles assembling the V6 "Full Kit" and for some reason they don't seem to be able to find the instructions (plain sight) on HF Signals website, I took the time to write up a fairly comprehensive construction manual for the V6 and did this while actually assembling the last one I bought.
I took photos during the process and tried to show the major points to help keep people out of trouble doing what should be a really straight-forward build.? I sent the PDF file to Ashhar Farhan who liked it and asked if they could print and include it with every kit they sold.? I gave him that permission but then the COVID 19 Virus hit and everyone is locked down.
Here is the PDF of that manual for anyone that needs it and I'm also going to upload it to the Files section of this group.
It will also be available on the TSW website, in the files section under "documentation" to make it fairly easy to find.? The manual is NOT copyrighted and may be freely reproduced/distributed but if you do, please leave it intact and submit any suggested changes or improvements to me (the author/photographer) via email direct (w0eb at cox dot net).
Thanks and I hope this helps clarify the build of this pretty decent kit.? Also, for the information of all, I have NO affiliation with HF Signals whatsoever, and I purchase the uBITX kit(s) just like everyone else at the full price on the website.
Jim Sheldon, W0EB
TSW Project Coordination
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Re: Help with my ubitx v6 kit
He did mention that it is the 'full kit'.? That being said, I'll bet it is the same problem that I had initially with my 'un-full' kit:? (I forget the terminology but) the wires from the control knob (as opposed to the on/off volume knob) plugged into the board rather than the arduino.? Just sayin'
--
Russ
K5FJR
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Re: Help with my ubitx v6 kit
Goodmorning..what kind of antenna do you use?? Are al the conectors on the board good and fitting???
Have you tryed the board without the case??(look out for shortcut) I have and also problems but most probems has been not fitting good connectors.
Regards
Rene
Netherlands
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Re: Receive Noise with USB
#cat
Hi Erwin
Thanks for your reply. You are correct... I did change the monitor and that reduced the
noise somewhat..
The real problem was that the PCB board that had the female USB-b socket mounted on
it did not ground the shield of the socket.
When I found that, I ran a chassis ground to the shield and the receiver quieted with the usb
plugged in...
I think that will fix the problem..
Thanks for your response and help, Erwin.
73's
Doug WA3ZHG
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Re: Receive Noise with USB
#cat
What pc screen or laptop screen do you have Doug? These LCDs produce a lot of noise close to a receiver . Even when in stand by and also when plug is still in power outlet when switched off .
--
PE3ES - F4VTQ - Erwin
73
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Sasquatch Stomp Score Sheets
Hello
all,
?
We’ve received over forty score sheets so
far, and really appreciate the level of participation this
year.
?
If you have not yet emailed your score sheet,
please do so as we plan to post the results on the pnwqrp.org Sasquatch Stomp
page this coming Friday.
?
73,
?
Wayne?
NB6M
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Re: I messed up and need a new one from India
Hi Ian,
Please contact me, I would like your AGC you do not want.
Thanks Scott
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Re: Help with my ubitx v6 kit
It would help those on this board to know if you have the Full kit or the Basic kit without the case.?
If the full kit, be sure you have plugged in the correct connectors.? There are a couple that look alike.
There are assembly instructions with pictures for the full kit on the HF Signals web page:
I do not have a v6 uBiTx, so I do not have any pictures that I can provide.? ?I would suggest that you verify the BFO adjustment to get the receiver working.? That seems tobe the most common problem for all of the HF Signals uBiTx radios.? Here is a link to a video that goes through the BFO and Frequency calibration:
If this does not help, you will need to wait for someone else to respond with a v6.
73
Evan
AC9TU
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Help with my ubitx v6 kit
I just received my ubitx v6 full kil and as everyone has said, it took me approx 1 hour to put it together.? I plugged in my 12 volt 3 amp power supply and had the following problems.? I need some assistance to get the rig up?and running as correctly specified, but I have no test equipment.? ? ?
? ? ?1) I tuned across all band from lowest freq to highest freq and did no hear any QSOs on any band - neither CW nor SSB.? Approx every 50K, I heard a loud squeal, but that?was all.? Could someone provide a picture or text of how the plug is wired so I can make sure it is soldered correctly? ? ? ?2) When I tried to call CQ, I pushed the PTT switch?on the mic but nothing happened.? I am assuming?that the mic is defective or miswired, but could someone provide a picture or text of how the plug is wired so I can at least make sure it is soldered correctly?
?
? Thank you for your assistance. ? Larry Mittman (N8MGU) ?? ==============================================================
==============================================================
Never cross a Dragon, for you are crunchy and taste delicious!
My Interests are:
Ham Radio (N8MGU) | Opera | Theater | Sailing | Judaica | CKCS
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Hi all, ??????????? Hope youre keeping well,i have a bitx 40 working with ssb and cw. comes with PE1 NWL 1,.29 FIRMWARE. its housed in a unmarked really nice blue case. comes with microphone and power lead.
bought on a whim no longer required. ?70 plus post to your qth. PAYPAL? ACCEPTED AS FAMILY FRIENDS.
Dave G0AYD QTHR . Stay well stay safe.
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Re: ubitx V3 with panadapter
#ubitx
I’m doing something similar with my v5. I use SDR-Console software with an RTL-SDR. ?It uses OmniRig to manage the CAT control. OmniRig has settings to change offsets for the different modes.
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Have my assembled and aligned V6? with original 6.1.? No mods.? Made several CW contacts with it.? Never going to get around to making any improvements.? $175 Paypal.? Includes shipping anywhere in US.
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Thanks Jason, Yeah those are nice videos. I have not seen his Youtube page before. ? 72 Aaron K5ATG ?
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From: Jason PirokSent: Tuesday, April 7, 2020 11:06 AM To: [email protected]Subject: Re: [BITX20] BITX 14MHz Build #bitx20 ? W2AEW (Alan Wolke) has a great video on the layout of Manhattan style PCB building.?
This one illustrates the island method, but the techniques can be used for Manhattan.
?? ? This one goes over several other construction techniques.
??
--
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Thanks Mark, Like I said, I’m a newbie so I will start identifying the VFO, BFO and AF amp and PA. ? ? 72 Aaron K5ATG ?
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From: Mark - N7EKUSent: Tuesday, April 7, 2020 11:09 AM To: [email protected]Subject: Re: [BITX20] BITX 14MHz Build #bitx20 ? Hi Aaron,
I not used MeSquares, but have done quite a bit of "dead bug" construction (which is just placing parts - upside down or not - over an unetched PCB).? Basically I just follow the schematic as it pretty much already organizes the parts in the place you want them on the board.? Start with the receiver antenna connector (or short piece of coax or twisted line) and just start building out.? The receive bandpass filter is first, then the RF amp, mixer, etc all follow.? The build will probably end up long an narrow, but that is good as it keeps the higher level signals away from the lower level ones.? Reading the description of Farhan's build you will see he did it this way too.? You might want to build the VFO, BFO, and AF amp on separate PCB's.? This will allow you to shield the RF one's and also allow you to keep the build from getting too long.? For sure I would put the PA on a separate board.
When soldering parts to the ground plane, remember that is one big piece of copper that you are heating up.? It will take higher heat and a longer heating time than the parts.? Clean then wet the tip of the iron with fresh solder, place the tip on the board where you want to solder, and wait until solder placed on the PCB near the tip will melt by itself.? Then you can place the part to be soldered to it onto the board.? This will keep the part from over heating.
You can place parts upside down or rightside up -- whatever is easiest and makes connections the simplest.
73,
Mark
PS:? Ferrite core toroids or old TV baluns will work much better than tap washers for transformers and inductors as the designer found out in the end.
PSS: If you can't find Toko type transformers for the bandpass filter, you can use fixed inductors and accomplish the filter adjustment by making the capacitors variable instead (trimmer caps).?
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Re: uBitx V5 can't make a contact on ft8
Thanks Nigel for helping me understand more about audio levels? and how having a power meter will help me get those correct!
And thanks for the others who suggested getting the cheap cb power/swr meters for $20-$25, I found one that was suggested on amazon and ordered it. I'm sure it will give me enough information to get it working much better and combined with getting my antenna up higher, I'm sure I'll be on my way!
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Re: uBitx V5 can't make a contact on ft8
Buy a cheap CB SWR meter for $25 on Amazon
Hamfest they go for $10 but everything is shut down
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On Apr 7, 2020, at 07:15, Mick <Mgsebele@...> wrote:
?Gavin, I agree with Scott’s antenna suggestion. Another improvement I discovered was to use a USB dongle sound device (see below, the one I use) The sound volume and quality are greatly improved compared to direct to computer connection. You will have to make sure the PTT connection from the dongle is disconnected or it will constantly trigger your TX. I eventually mounted a second set of 3.5mm jacks on the back of my rig (wired to the audio jack) through a selector switch (Dpdt on-off-on) on the front of my rig.
-- ?
73
Mick VA3EPM?
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Mick
Jim Sheldon
Aaron K5ATG
