This particular IC came out of a very old VHF band radio, from the early 90’s. The die was encased in a custom ceramic package, like every other IC in the radio, with a custom part number. I managed to identify it from the markings on the silicon. This was
Following on from the earlier power tests on my Baofeng HTs, here’s the readings from the Wouxun KG-UV950P. Power is a little lower than specified, but this is probably due to the supply voltage being a bit less than 13.8v. These readings were taken at a supply voltage of 12.88v.
I’ve noticed that the RF power output from the Chinese radios can be quite variable from model to model, and even from individual radios of the same model & batch. I’ve bought an RF Power meter (GY561) to do some tests on the HTs I have at present. All tests
In my original review, I noted that this radio was supplied with a SO-259 socket for the antenna connection. However I’m less than fond of these, due to their non-constant impedance, which can cause signal loss issues at VHF/UHF. Because of this, I’ve replaced it with a high quality N-type
Here is an old XM2000 marine VHF tranciever. Here is the casing split, with the main CPU board & display on the right, & the RF tranciever board on the left. View of the main CPU board, with the mic & loudspeaker on the right hand side. The channel display