KA7OEI's blog

Random musings - usually on a technical (nerdy) subject - perhaps related to amateur radio and things found at ka7oei.com and modulatedlight.org. No AI is used to generate this content.

Thursday, February 14, 2019

A 2 meter and 222 MHz low-pass filter for the SocoTran ST-7900D

In an earlier post (link) I described a "hilariously bad" radio - the Socotran ST-7900D (a.k.a. the QYT "KT-7900D") . ...

Friday, February 1, 2019

A hiliariously bad multi-band radio: The SocoTran ST-7900D

Spoiler: DO NOT get one of these radios! If you have one, don't use it! (If you are of the "tl;dr" type, scroll down ...

Saturday, January 19, 2019

A transmit converter (and amplifier) for 630 and 2200 meters

There is a dearth of commercial equipment "out there" designed to allow operation on the new (to U.S. Amateurs) 630 and 2200 mete...

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