On 2/27/16 9:35 AM, Rob Sherwood. wrote:
Hi Dan,
I purchased two of these, and VA7OJ one. One of mine is defective, and the
seller is going to replace it. What was disappointing was all the spurious at
60 Hz intervals relatively close-in to the 10 MHz carrier. I suppose if all
one wants is a reasonably accurate 10 MHz, then they work OK. My good one and
Adam's unit were 1x10^7 low in frequency once warmed up, and there are pins for
frequency adjustment and sync to another standard. However if one wanted it
for an oscillator with good close-in phase noise, the spurs ruin that hope.
Do you know if there is a chopper at 60 Hz that runs the proportional oven that
is the source of all the spurious?
Is it right at line frequency, or is it "close" to 60 Hz?
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