[sdiy] A Frequency Standard for Poor People?

[Glen]

In the past, I've seen DIY articles about building inexpensive, precision
frequency references. Unfortunately, I don't have any of these articles
handy at the moment. In concept, I think they all relied on extracting
precision reference signals from "someone else's" existing reference signal. 

Such as, extracting a reference signal from:

"time and frequency" SW radio stations

signals derived from color television broadcasts

GPS receivers

Anything else?


Does anyone on the list know about any of these methods? I could really use
a reliable frequency reference, to check the calibration of a frequency
counter. I want something that is very accurate, but also very cheap. Is it
possible? Which method gives the best results, and which is the least
expensive system to construct? Unfortunately, I can't afford to spend much
money.


thanks,
Glen Berry