I am running my uBitx v5 24/7 - connected to a Raspberry PI 3 as an FT8 'monitor'. I can access it from anywhere on any device (laptop, iPhone, iPad) with VNC and OpenVPN. A big advantage of this setu

#remoteaccess

I had the same problem and narrowed this problem down the K1 relay by measuring the relay outputs for K1 and K3. I decided to replace the K1 relay and have had no issues ever since. Replacing a relay

#ubitx

When my uBitx stopped working on RX + TX - I received a lot of helpful comments from the subscribers of this forum. In addition I benefited greatly from the following 2 Youtube channels in troubleshoo

#ubitx-help

Update on 'fixing TX' after being able to revive RX yesterday: I had already prepared to remove the existing IRL510 MOSFET's be practicing 'de-soldering' on some broken electronics boards ... However,

#ubitx-help #ubitx

Hi Jerry, I have now been able to start with the 'noise injection' test: I first connected the wire to TP21 and could hear noise increase (VOL set to high). This was not much of a surprise because I h

#ubitx-help #ubitx

I found the following diagnostic guide for the uBitx V3: https://groups.io/g/GCBG/attachment/105/0/uBitxTroubleshooting%20manuala.pdf Unfortunately I have not been able to find such a document for the

#ubitx #ubitx-help

Hi Evan, An update on the investigation: 1) Radiuno tests: I was able to buy a used Tektronix 2465 oscilloscope over the weekend for a very good price and could get started with proposed Raduino clock

#ubitx-help #ubitx

Hi Evan, I created a small test amplifier on a breadboard to test the uBitx LM386 in isolation. It still works fine. It was an interesting learning experience to build this test circuit: https://photo

#ubitx-help #ubitx

Hi Evan, Following your recommendation, I disconnected the 12V, 3A AC->DC powersupply and replaced it with a 12V battery. The humming noise is now gone but I can still not hear any of the signals even

#ubitx-help #ubitx

I disconnected the TX PA part of the uBitx (brown wire) in order to test RX in isolation. Results: Unfortunately receiving is also no longer working. Tuning across the 20m band results in a uniform hu

#ubitx-help #ubitx

Since the IRF510 heatsinks are getting very hot very quickly right after turning on the radio - I am afraid to keep the radio on and potentially cause more damage. I am currently thinking of replacing

#ubitx-help #ubitx

I might have broken the IRF510 MOSFETs with FT8. This problem started during a longer sequence of FT8 transmissions - abruptly all signals disappeared from the waterfall. The heatsinks used to get war

#ubitx-help #ubitx

Hi Vic and Paul, I have the exact some issue with my uBitx v5: It was impossible to hear (for example) the WWV time signal at 10 Mhz without the IF shift set to 4000 I followed Vic's advice to adjust

Update after using the uBitx for about 2 weeks: Listening to SSB voice was possible for strong signals after setting IF shift to 3000 (CEC firmware) 1) interference from the KGO AM station is now gone

#ft8 #ubitx #antennas #firmware

Very happy with my recently finished build of the (unmodified) uBitx v5: https://photos.app.goo.gl/P3goJ3msPL6UwWUx8 https://photos.app.goo.gl/PAcSbpFpCCcKojcE7 Antenna: QRPGuys 'no tune end fed half

#ft8 #ubitx #antennas #firmware