Re: receive works great, but no trans power, #ubitx-help

Jerry Gaffke

Yes, an RF probe is a good idea to have around when debugging a uBitx.

That looks like a reasonable circuit, but good luck finding a GEX66.
Seems to be a germanium point contact diode from 50 years ago, meant for UHF,
5v max reverse voltage.
I'd just use a Schottky diode such as the 1n5711 or a BAT54*.
And maybe adjust those cap values, 100pf at the input seems low for under 100mhz. 

See this post, and the thread around it.


On Sun, Jul 15, 2018 at 09:47 PM, Clark Martin wrote:
Build yourself an RF Probe such as at:  You can use it to trace the signal (or lack thereof) through the transmit path.

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