Henry Kolesnik wrote:
I have several dbm modules, most with sma but some with bnc and most have
the labels worn off. I suspect one might be HF and the rest microwave. I
have a Watkins Johnson with a blown mixer and need to replace it. I've
ordered a Minicircuits SRA-3H but no word as yet. How would I go about
testing these to find out if they're any good and good for VLF to 30 MHz?
It would be too hard to substitute them as the space is limited and I don't
want to risk buggering something else up. On some I'll have to determine,
in, out, osc and that mya be a chore if the unit bad.. Any tips on how to
determine the leads and test for performance appreciated.
tnx

I'd test them with a couple of suitable signal generators, and a simple
filter on the mixer output. You should see if they are are still
working and get a feel for their performance.

Leon