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reviving my sbitx v3
So, after the diagnosis and repair of the power group components, Q9,Q10,Q101,R5,R6 (all replaced), on power up, +12v drops to under 2v and the area around the Q12-15 group heats up quickly. I did
By Michael Bales · #116026 ·
Re: sBITX 64Bit Pi Image Available #sBitx
Thanks a lot for sharing Best 73 Patrick
By F6GWE · #116025 ·
SMS noise on sBitx V4
This needs to be implemented in sBitx V4, Getting back to the SMS 5V regulator noise, I just finished building a QRPlabs QMX+ and while it uses 3 different SMS regs it does not exhibit any noise from
By Joel Caulkins/N6ALT · #116024 ·
Re: sBITX 64Bit Pi Image Available #sBitx
*Software Release Announcement: sBitx Version 4.4* Version 4.4 introduces new features, enhancements, and fixes to improve your experience. Here’s what’s new: *New Features:* * Added power
By JJ - W9JES · #116023 ·
Re: zBitx - Progress Update
Pro ty, co si nedoká?í najít translator:? It's good news for all those waiting. There is no need to force the HF Signals collective to hurry. They do their best to make sure everything is in
By Lev · #116022 ·
Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
Well, let's wait with celebrating until I replace the MOSFETs and find the device working properly. What annoys me is that I didn't detect that parasitic "diode" between gate and source at the first
By WZab - SP5DAA · #116021 ·
Re: Error starting sBitx v4.3 64 bits
Hi Ramon, Try adding noaudio to the vc4-hdmi (not sure this is the correct name) line in the config.txt file in /boot.? I had to do that for an external HDMI monitor with audio. I still need to
By Evan Hand · #116020 ·
Re: How to ruggedize the sBitx V3
On my SECOND sBitx (which I bought used, once again) here are the items I plan to do (I prefer the V2 model, just because it offers me a bit more "headroom" for digital etc on the lower bands -- I
By Gordon Gibby KX4Z · #116019 ·
Re: Error starting sBitx v4.3 64 bits
Thanks Ashhar, so there is no solution if sBix DE is used? Ramón
By ramonlh@... · #116018 ·
Re: How to ruggedize the sBitx V3
This radio is ground-breaking in that it is NOT a $1200 Icom and Yaesu and yet it has many of their features, and sometimes does things far more expensive radios cannot. Instead of using $15 final
By Gordon Gibby KX4Z · #116017 ·
Re: How to ruggedize the sBitx V3
Hi Gyula, I remember reading about a failed DE output transformer. The stacked toroids cracked due to heat, leading to the V2 and V3
By Evan Hand · #116016 ·
Re: zBitx - Progress Update
Lev, Neváhejte pou?ít P?eklada? Google, proto?e jazyk pou?ívan? na fóru je angli?tina. U?ivatelé nebudou kv?li va?emu rozmaru hledat p?ekladatele, ale va?i zprávu budou
By HA3HZ · #116015 ·
Re: How to ruggedize the sBitx V3
Bravo Delta, I've read almost every message since the summer of 2022, but I don't remember a melted transformer. Could you give me a link to what I missed. If you read my post today about v2, then I
By HA3HZ · #116014 ·
Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
Delighted that you found the problem. Interesting that both drains showed an AC voltage even though one device was effectively shorted. That is surprising to me. Wish you the best Gordon kx4z
By Gordon Gibby KX4Z · #116013 ·
Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
Wojtek, Buy 10 pieces so that you can choose the two with almost the same opening voltage. They may be the same in shipping, but there is still a difference between them. You can install them without
By HA3HZ · #116012 ·
Re: sBitx v3 stopped producing RF output after long FT8 operation #power #rf #sBITX_v3
I would wait on the insulators myself... They help tremendously to be honest. David - WK4DS
By WK4DS · #116011 ·
Re: Error starting sBitx v4.3 64 bits
The tft display uses spi interface that uses the same gpio pins as the audio codec [email protected]> wrote:
By Ashhar Farhan · #116010 ·
Re: Error starting sBitx v4.3 64 bits
Thanks JJ, the output to "aplay -l" is: pi@sbitx:~/sbitx $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: vc4hdmi0 [vc4-hdmi-0], device 0: MAI PCM i2s-hifi-0 [MAI PCM
By ramonlh@... · #116009 ·
Re: How to ruggedize the sBitx V3
Couple of questions: Is it because people are experimenting more with sBITX that we are seeing more failures? Does it have automatic output reduction in case of High SWR as in case of regular
By Jon · #116008 ·
How to ruggedize the sBitx V3
Hi there, I've been seeing posts about burnt finals, melted transformers, etc. Is there a way to "invest" into parts for the sBitx V3 to make it more resilient. I would not mind to buy beefier
By Bravo Delta · #116007 ·