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May i ask what is the output spectrum purity, supression of harmonics etc., for ubitx multiband and the single 40m band bit40 73, Simon

Thanks VU2POP, Snowist and DV3RWR for your comments. Open an dispute with Worldchips, and I requested him to re-fund.

https://timesofindia.indiatimes.com/city/hyderabad/california-wildfire-delays-indias-first-private-satellite-launch/articleshow/66903379.cms -- Raj, vu2zap Bengaluru, South India.

https://www.youtube.com/watch?v=Wq8kS6UoOrQ T minus 11 hours

yep thats all that's needed.

Greetings, I have a ubitx unopened ver. 3 kit that I'am not going to build that I want to sell or perhaps trade. I also have an aluminum case for it. I would like to get $100 for all of it. You can

I'm not real familiar with his raduino board but looking at the schematic it appears to be just and enhanced raduino. Looks like he brings the i2c pins out to a header and a few other minor changes.

Lots of people do, but also very many do not. I have been using a Pi and a ?6 usb soundcard with leads directly to my ft891 with no issues at all. All of the input levels are controlled through the

That surprises me. I always use a sort of psk interface, i. e. isolating transformer (to avoid ground loops), fixed attenuator (the signal from the sound card might be too strong for an mic input),

Thanks.

Thanks Evan.

Thanks but there will be no transformer decoupling via signaling or similar, just straight from Pi to usb soundcard to rig.

The signaling has a serious capacitor built into it

Latest Dr. Ian Lee KD8CEC's firmware? version 1.11 Raduino Source & Hex, MM EXE & HMI's for Nextion https://github.com/phdlee/ubitx/releases/tag/v1.11 Rich Neese KB3VGW's Custom Nextion Screens from

Daimon, I have not connected anything other than a mic and amp to the uBitx, however I have a lot of experience with both Arduino's and Raspberry Pi's. Both are susceptible to high voltage on their

Hi Daimon I must admit I'd never thought of the potential problem you mention. However FWIW I use a Signalink USB between Raspberry Pi and ubitx and it all works fine in every mode I've tried. Cheers

Discussed the cross-over issue to my brother in law. He was also perplexed, so did more research - and found an answer. Turns out, it is a "feature" of the LM358! The way the chip is designed to reach

Good afternoon all I'm new to the group,?a friend? wants to upgrade his ubitx display to a Nextion 3.5 inch type. As far as I know his radio has no mods but he would like to add a S meter with the

hi all, i am working a project that i want to use VK4PLN (VK4PP) RADUINOI2C ver. 1.0 i looked in the files section and through pages of files that are poorly described. for now i need the raduino i2c

bruce, you may replace the bi-directional amps by 3 transistor version and see the performance difference. A friend has indicated that noise level comes down. Even One could try with single dual gate