Posts by iz1fks

Same issue here. yesterday I did my first qso on qo-100, but I had the same issue during RX. I probed the DC line at bias-Tee and see that a 400kHz signal up to 300mV during tx (key down) is present. Edup ep-ab003 is responsible for this conducted emission coming from its 6V internal switching regulator. I didn't try yet with separate power supply, but of course it will works! The problem now is how to solve this issue; the voltage regulator ic is ys1802 a chinese made chip and I cannot find any useful information about that. anyone had a similar issue with edup amplifier?

73 de Phil, iz1fks

I would like to modify with TCXO 25MHz. At the moment i haven't tested it with original xtal yet.

hi, I have bought a Fracarro UX-TW 287338 since a few Om's have found there is a opticom pcb inside. Unfortunately manufacturer had changed the pcb even if the p/n is still the same , so I have found a different one inside. I attach the photo, if anybody could recognise it and help. it's pll and 25 MHz XTAL

I have read all the post, but at the end which is the best alternative to octagon otslo that is no more available ? i'm looking to a LNB with possibility to modify with TXCO.

hello everybody,

where is a source for 739MHz to 144MHz downconverter ?

thanks in advance

73 de Phil