On Tue, Aug 6, 2019 at 08:49 AM, Jerry Gaffke wrote:
What you really need is a good fast scope and a fair idea of what
a PIN diode should be doing.
Maybe a uBITX into a dummy load (possibility 100 ohms at the UBITX and another 100 ohm load after the rectifier-under-test) at 80M could be used as a "high" power signal generator to power a test fixture where you could look at the RF waveform with a scope and compare how much current is needed to feed into candidate rectifier diodes, for full conduction through the RF cycle, to determine their "PINness".
As a more crude measurement, possibility measuring the RF voltage or using some other "power" meter, like using to "forward" power reading of an SWR meter connected to the second (after the possibly PIN diode) would work. You would measure how much current you need to feed into the possibility PIN diode to get the same reading as with a jumper wire replacing the rectifier diode under test.
Tom, wb6b
