The TAPR surplus Thunderbolts, or build your own GPS disciplining scheme A more current approach might be to get one of A few years ago I grabbed one of the Z8301s that turned up on The XO gives you good phase noise, and the GPS gives you long term Or, go and getyourself something like a GPS disciplined quartz oscillator. The counter, on the other hand, is optimized for long term stability. Noise, at the expense of long term stability and aging.
Icom ic 7800 bench test generator#
Typically, the signal generator oscillator is optimized for good phase Test equipment: the signal generator's internal oscillator or the counter's. This is like deciding which instrument to use as the master in a rack of If you want the best RF performance, pick the one that's got the lowest If you want "dial reading accuracy", pick the one that's most accurate. If you want phase coherence it probably doesn't matter what the source is,Īs long as they're all locked to the same reference. (is it used in the PLL, or does it just drive a counter, for instance) Use the R9500 to provide the ref freq to both the IC-7800 and the 5000A? Orĭepends on what you're trying to do, and how the external reference is used Would it be more appropriate to use the 10 MHz ref from my 5000A? Or to Both these Icom radios specify their frequency stability as +/- 0.05 I drive my Icom IC-7800 with the 10 MHz reference frequency from my Icom Would it be more appropriate to use the 10 MHz ref from my 5000A? Or to use the R9500 to provide the ref freq to both the IC-7800 and the 5000A? Or let 'em all 3 run independently?
Both these Icom radios specify their frequency stability as +/- 0.05 ppm. I drive my Icom IC-7800 with the 10 MHz reference frequency from my Icom R9500. There are 10 kind of people, those who can count to 1010 on their fingers, Petervn-at-hetnet-nl pa0pvn-at-hetnet-nl pa0pvn-at-amsat-org A good question, but why? what are you trying accompish (sorry if my english is wrong)īest is possible getting a cesium standard oscillator and use that for all rigs IMHO
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