Re: Frequency calibration?
|
Unless there is a reason for extreme precision in your frequency measuring, you don't need to spend too much money adjusting the oscillator to a reasonable precision. The old method using WWV with a radio receiver can be quite good.?
I have been using GPS for the last dozen years and before that WWVB on 60 kHz, but I do a lot of work requiring high accuracy at microwave frequencies.
?
I recently bought an all new (small) 10 MHz output GPS receiver, used for work away from my lab. It is made in China, and comes with a power supply (small "wall-wart") and antenna for $130 delivered (eBay item?262981677836). This provides far better accuracy than any reasonable person would probably need, at the cost of a new crystal oven. The construction appears to be excellent. It locks quickly even with the antenna on the work bench.
Stuart
K6YAZ
West Hills, (Los Angeles)
California
StuartL73@...
|
