I don't know about the ringing/echo problem, but I needed to add an automotive electrical noise filter to my BitX40 to run it mobile. I had an old Radio Shack 270-051B unit in my junk box and installed it in the rig case. It completely eliminated the loud alternator whine and I have used my BitX40 mobile several times.
As an aside, I just tested my uBitX in the same vehicle with no added filter and I am not hearing any alternator whine with it. Not sure why, but that is good.
=Vic=
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Re: CEC< 1.122 For V5 CW BFO adjustment
The offset is controlled by the setting for CW tone up in the CW section. Any value put in to the CW Freq Adjust section adds to that, so you should leave that section as zero, then you will be transmitting on the display frequency. Otherwise you still will be offset somewhat. I am not sure what use the CW Freq. Adjust has...just make that zero. 
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Re: Received my ubitx board today!
Hi Kelly, ???????????? From a cold,windy and wet United kingdom.Good luck with the build on the ubitx,i have a version 3 as my main station with KD8 CEC firmware and normal lcd display,i have added an external G3 CWI an external cw filter no other mods,i do not own any commercail radios i am all homebrew,please view my qrz page..Again take your time and read all the info available on this excellent site.Dave G0AYD.
Hi everyone! I am very happy and some what nervous that my ubitx arrived from India this morning...very fast shipping.? I am in agony as I cannot work on it until next Tuesday due to family obligations....LOL. Oh well, at least its HERE. I plan to enjoy the build.?
The first mod will be adding the Nextion display and the CEC fw...
73, Kelly K5AID?
Sent from my Verizon, Samsung Galaxy smartphone
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Re: #bitx40 Display questions
#bitx40
Confirming what Mike is saying, the 16x2 parallel LCD display attaches to the header on the opposite side of the Raduino board from the connectors shown in the wire up diagram. Likely it should just plug in and contrast control is provided on the board. You have what appears to be a parallel display, as opposed to serial, so it should work.
=Vic=
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Received my ubitx board today!
Hi everyone! I am very happy and some what nervous that my ubitx arrived from India this morning...very fast shipping.? I am in agony as I cannot work on it until next Tuesday due to family obligations....LOL. Oh well, at least its HERE. I plan to enjoy the build.?
The first mod will be adding the Nextion display and the CEC fw...
73, Kelly K5AID?
Sent from my Verizon, Samsung Galaxy smartphone
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Hi Jon,
It's worth a try.? Searching back in posts, Allison did test the pn vs 2n and found the pn not as good, but it was still better than the 2n3904.? Probably it will depend on the quality and manufacturer of the pn part (although I think pn was specific to TI so it should be good quality, but there are lots of parts out there!)
If they don't work out let me know, I can try to find some 2n2222a or 2n5109 from my supplies to send you.
73,
Mark.
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Re: #bitx40 Display questions
#bitx40
Hi Mike,
The display hooks up to a raduino, not directly to the arduino.? Do you have the raduino board too?? I don't have a bitx40, but I thought those came with one.? Or are you building it from scratch?
73,
Mark.
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Re: #bitx40 Display questions
#bitx40
Can anyone look at this and help?
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Thanks Mark, guna use em.
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Re: How to connect ubitx microphone jack to soundcard output
Most of the carrier should be getting suppressed by the balanced modulator.
If the carrier is about as strong as your main signal, look very hard at D5 and T7,
perhaps a broken or shorted transformer wire, possibly a blown diode.
The node from T7 back to C63 and C50 should have zero volts when there is no mike input,
a fraction of a volt of AC audio centered on ground when there is mike input.
If the carrier is mostly suppressed but enough there to be a bit annoying,
then could be you need to get into the menu and move the BFO further away from the filter passband.
Any idea what all you did between when it worked and when it didn't?
Were you messing around with the BFO in the menus?
Applying several volts of audio to the modulator somehow, enough to blow the diodes?
Significant mechanical shock to the rig?
My best guess is a cold solder joint, short, or broken wire at T7.
Jerry, KE7ER
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On Fri, Mar 15, 2019 at 06:02 PM, Karl Heimbach wrote:
Thank you all for the suggestions on how to interface a soundcard with the ubitx.? I ended up using an EasyDigi.? However, in all of the experimenting before getting an EasyDigi, I've managed to destroy something in the radio.? Now I find that when using the microphone and keying it, I have a carrier present. The radio will transmit SSB, but with the unsuppressed carrier along with it.
I can also now transmit PC generated digital modes, but also along with it, the? unsuppresed carrier.? CW is as normal and receive in all modes is unaffected.
SSB worked properly two weeks ago, which was before I started attempting to interface to a PC.? I've destroyed a component I would guess, but have no idea of which one it may be.? Looking at the board, there is nothing obvious.
Any ideas as to what I've broken?
Thanks,
Karl - W5QJ
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Re: How to connect ubitx microphone jack to soundcard output
Thank you all for the suggestions on how to interface a soundcard with the ubitx.? I ended up using an EasyDigi.? However, in all of the experimenting before getting an EasyDigi, I've managed to destroy something in the radio.? Now I find that when using the microphone and keying it, I have a carrier present. The radio will transmit SSB, but with the unsuppressed carrier along with it.
I can also now transmit PC generated digital modes, but also along with it, the? unsuppresed carrier.? CW is as normal and receive in all modes is unaffected.
SSB worked properly two weeks ago, which was before I started attempting to interface to a PC.? I've destroyed a component I would guess, but have no idea of which one it may be.? Looking at the board, there is nothing obvious.
Any ideas as to what I've broken?
Thanks,
Karl - W5QJ
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A little dusty, but 10 ohms on my V3 
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Re: 100/ppr Rotary Encoder Detents
I've been working on getting a 100ppr encoder working with my software and it is a pain to get working properly.
You have 3.6 degrees between each step in a 100ppr encoder so unless you use a large knob, it can be difficult to set frequencies easily plus as mentioned, detentless encoders can sit on the transition state causing frequency jitter.
PS the cheap mechanical encoders (as well as the detented 100ppr encoder) has 4 states between detents.
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not letting me send a pic
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R48 looks toasted. Schematic for v3 says 10 ohm. Pic looks like it's marked as a jumper 000. Can someone please confirm value of r48?
Thanks!?
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Some have reported trouble with the BNC connector provided with the kit,
the receptacle is machined a bit too big for the pin.
And no, this is not a 75 vs 50 ohm thing, a 75 ohm BNC would work fine here.
IRF510's can get hot without any RF at the gates if the gate bias is set to high.
Quiescent current should be around 100ma for each IRF510 as described in the hfsignals instructions.
Jerry
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On Fri, Mar 15, 2019 at 04:01 PM, Curt wrote:
Finals are hot implies getting bias current and RF, and that they likely are working. Check continuity from the so239 pin back to the output side of any blocking cap. I think something is no longer connected, and your dvm should find it. Maybe a faulty solder connection,? been there myself.
Curt
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Finals are hot implies getting bias current and RF, and that they likely are working. Check continuity from the so239 pin back to the output side of any blocking cap. I think something is no longer connected, and your dvm should find it. Maybe a faulty solder connection,? been there myself.
Curt
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GUI for V5 board NX4024T32_011
Would like to know if there is a GUI for V5?NX4024T32_011?
I uploaded UBITXV5_CIC_V1.122_NE.hex and then loaded UBITX_NEXTION_GUI_V3 UBTIX_32.tft?
into the SD , then put it in the display - it downloaded fine. BUT the display is not fully functional.
Some of the touch screen functions work but not all. Is there a V5 GUI in the works??
Thanks Bill K9JUI
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Re: What have I done to the receive? Weird screech?
#ubitx
One issue I had was that I installed the v4 version of the CEC firmware on the v5 board. That led to my low-pass switching sequencing getting all fouled up and me not hearing anything; it also messed with my BFO frequency, though it sounds like your BFO is calibrated in the right range for the v5 board. I'd also had some issues with squealing; a new nano helped, but fixing the firmware completely fixed it.
This is the version that fixed my issues:?http://www.hamskey.com/2019/02/release-cec-firmware-v1121-for-ubitx-v5.html
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Vic WA4THR
