Anybody have one of these?
I'll have my new 150 MHz Colpitts LC oscillator test board in a week or so, and I need a modestly good frequency counter for testing.
We usually buy some high-end Keysight counter/timer for $5K, but I'd like a cheap, not so exotic counter for my bench.
The LC oscillator has a driven guard, a small ground plane patch, under the critical nodes. One experiment will be to measure tempco with that bit grounded, or driven from the emitter of the follower transistor.
We're still in lockdown, so I'll have to sneak in to build and test it. Don't tell anybody.