musevg

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Which Quansheng UV K5 mod to buy? Green, small or big orange?

I think about accepting the challenge and boldly solder SMD where I’ve never soldered before: Doing the Quansheng UV-K5 4732 addon PCB modification myself 🙈...

musevg OP , 2 months ago

AFAI understand their basic functionality is to extend the frequency range for those UV-K5 devices down to 18 MHz when used with a hacked firmware. At least for RX, everybody warns about not to use a modified device for sending out of band (2m/70cm).

But the green PCB includes a resistor (for replacing the “choke”?) and microscopic SMD capacitors to replace on the radios main board to fix problems (idk which ones) with the radio. The orange boards include neither a separate resistor nor a capacitor, but the big orange board includes a second circuit which seems to be an amplifier to improve SSB volume. This is my interpretation of forum posts & product desctriptions I don’t understand completely - thus my original post, hoping to find somebody who’s savvy on this topic.

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How to build/mount horizontal dipole antennas between two houses?

It’s been too many years since the last time I thought about building antennas, so i’m a bit rusted: I think about installing a nylon cord between my house and my neighbours house (some 40 or 50 meters away) to put a dipole on the cord. Before I start calculating, what lambda fraction for which band I can get with that...