[sdiy] HP Counter Recommendation?

[Glen]

I've been thinking of getting one of those HP frequency counters that I see
on eBay. However, I'm not that familiar with the different models. I
wouldn't want to unknowingly get a model that was considered a "lemon" for
some reason.

I want one of the "Universal" counters. I'm not interested in GHz
bandwidths or anything like that. I just want an accurate and precision
instrument for signals under 100 MHz. In fact, I would use the counter
mostly in or near the audio range. In such cases,  I expect I would be
using period measurement more than actual frequency measurement, for the
added precision that would provide. Being able to do frequency ratio
measurements would also be a nice feature to have.

So which models of HP Universal Counters should I be considering? I should
also mention that my budget is really small. I absolutely couldn't afford
to spend more than $100 at the moment. (Yes, I realize how small that
amount is compared to new HP gear prices, but I'm looking for an older eBay
bargain here.)


thanks for any advice,
Glen Berry