开云体育

Farhan, I believe that the "fixed" traces are the same.? I take your word that the tx stop is fixed as well.? I would be curious to see what the tx stop trace looks like. 73 Evan AC9TU

Peeps, We have seen reports from many users about the blowing up of the PA transistors. There were hardware reasons for this to happen (like improper heatsink mounting) these have been fixed through

I used the one recommended by Allison KB1GMX. http://ubitx.net/fix-fix-uneven-tx-output-across-bands/ after the title: Replace driver transistors and some other parts (Allison

Rafael, A slightly unwieldy solution is to use IAX2 protocol that can be written in less than 100 lines of code and run an instance of Asterisk to provide all kinds of gateways. One could even stream

Hi Ashhar, I like this idea. I think we could have both an optimized low latency kernel / alsa setup, and built on top of it, an RTP media gateway. It might be needed a samplerate converter (SRC is

Rafael, As you have better linux audio chops than I do, here is my plan to clean all this up: 1. The sbitx core will transmit RTP audio data, either PCM or Opus to a multicast address within the

Thanks Ashhar and Allison!

After some outstanding drifts and latency on the sBitx, I realized the audio dsp and the alsa aloop were not locked. We need to use "timer_source=" parameter for the snd_aloop module to indicate the

Hello Evan, Which mod did you use to fix the uneven power output? Cheers Dean VK3DAE

Evan, Interesting point on using something around 15mhz.? Thanks for sharing that! 73 Mark -- AJ6CU KD8CEC 2.0, Nextion Screens,? and open source uBITX Raduino boards for Arduino IOT, BLE, RP2040,

Bryce, Yes, accuracy should be consistent across the bands assuming that you calibrated on one of the higher bands.? The error is multiplied as you go up in frequency.? The worst case would be to

Evan, After re-reading your post multiple times, I think it's starting to sink in.? Long story short, zero-beating is required because there are multiple variables changing simultaneously.? I'll

Another calibration video using the new Settings Editor and CEC V2 beta. https://youtu.be/7m4FttdHRCU You can then re-use these values in whether firmware you like. 73 Mark -- AJ6CU KD8CEC 2.0,

I use a Samlex 12A.? Its old school analog but portable its not as it weighs an easy 10 pounds. For portable LifFepo4 battery with fuses on the leads a 20ah unit runs it for a long time and weighs in

Ashhar - ?I changed my display name .

Bryce, Since all three clocks are changed when you do the calibration, adjusting to the first clock output does not ensure that the rig is calibrated (as your experience shows).? The other two can

Excellent! Do we continue to address you as loopmasta? [email protected]> wrote:

We have used meanwell 12v, 10A smps with an added volt/amp digital meter.

Evan, Thanks for the response!? I have a 1.5GHz spectrum analyzer that I used as a frequency counter following the linked method above and then tuned the BFO (basically skipping step 1 in your

Hi all. I just want to quickly wrap-up this thread and give some feedback on how I fixed my rx problem. With a lot of help from Ashhar Farhan, Steve Beckman, Evan Hand, Petr Ourednik and Raj we could