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I am almost finished with my uBitx version 4. It has the following: Nextion 2.8 SDR receiver/panadapter (switch selectable with input grounding relay when transmitting.) Built in antenna switch for

I should also note that I have turned the power down on the Ubitx to make sure I am not driving the amp with more than .5 watts... Thanks Mike WA3O

Group, ?I noticed that my New version 5 has poor carrier suppression. I noticed this when I ran my UbitX into my LDMOS amp and I seen about 10 watts out of carrier. I was wondering if it is due to a

Hi Peter, Further to my earlier e-mail requesting pictures I can see there is a lot of interest in the uBitX, perhaps you could kindly advise your payment details. Kind Regards M0IDR Sent from

hello peter, Iwould like to buy your u bitx do you accept paypal as famiy and friends or bank transfer..is it running KD8 CEC firmware. regards Dave.. wrote:

Thank you for your response. I do not have a second receiver?to check it with. The relays do click when the PTT is pushed. -William

Thanks much Vic, That makes sense....I saw it went to 10mhz and that the receiver went dead, now I know why....Should be able to get it on the money now....Mike

Hello Peter, I would appreciate some pictures please. I am interested. Thankyou 73 Ian M0IDR Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

After serious deliberation, I have decided to sell my ubitx transceiver. I have done Raj's mods - the 45 Mhz filter inductors replaced by smd's, the new filter in front of the second mixer and the 2

I am afraid it is correct, although bothering. On 'USB bands' is the other way around, it shows 700hz above. So be careful especially during contests not to transmit outside the ham bands otherwise

Hi Sascha, Sorry to hear about the dead Teensies...ouch. Fascinating problem. After reading you email a few times and to make sure I didn't jump to conclusions: 1. your "spy" connection towards the

Mark, The 0.1 uF capacitor goes on the tuning pot between wiper and GND. you can add a 100 pF capacitor in parallel with L7 to reduce the second harmonic. -- Ion VA3NOI

Thanks I am replacing the v4 today with my v5 and will start with the cw test into the dummy load on all bands. My v4 on cw 20m band still has the issue with spurs which may be the relays I have not

You will have to remove R60 then you don't need another blocking cap. If you don't remove R60 then you need another cap. Raj

Jim and all, I found this board as it came from hfsignals not passing my tests. Even at lowered power out. Howerver when I reduced the drive by RV1 and increased the modulation level (mic) the Po

I know the calibration method changed from what is posted on the HFSignals website for the v.4 boards, so perhaps the new method applies to the v.5 boards. In the version 4 when you select calibration

I should have mentioned, do not put anything in the "CW Freq Adjust Value" box. That will add to the offset you have already selected when you set the CW Side Tone elsewhere. =Vic=

This bothered me as well, as the TX is offset by the amount that you have set your CW tone for. I think it might have been better to offset the receive in CW mode, and Dr. Lee has provided that option

There is a dc blocking cap in the ubitx circut, c60, you don't need another. I used a pair of audio transformers to isolate the radio signals, one on the mic side and one on the input side to the

In Linux, cwdaemon and XLOG.