Hi Dan,
Low tech. Yes! IMHO I think its easier for my mind to track an analog
indication of Delta-V. I am more analog oriented.. my son OTOH may be able to
read a last digit flickering digital display better than me!.
I am other wise thinking of a DIY gizmo:
Mix two signals in an SBL1 or Eq.
Take the phase/DC IF difference out
Make a zero crossing detector or similar
Timimg the event. Wait for the event in other words!
Twiddle the preset again and see what happens.
The human mind does a lot more processing than the above with an analog
display..
Cheers
Raj, vu2zap
>Raj wrote:
>>
>>I was thinking of feeding two 10 Mhz signals to two ports of a SBL-1 or
>>similar and taking the DC
>>output at the IF port into an opamp or analog meter. This was visually easier
>>to adjust the drift between two frequencies by just watching the needle move.
>>A stationary needle over a couple of hours would be the best!
>>
>>
>Raj, I did exactly this but with an old chart recorder attached to the mixer
>IF port. This allows one to leave the room and not have to watch for hours or
>days. I was able to adjust my -hp- rubidium unit this way against gps to
>better than one cycle per day.
>
>Low tech but effective.
>
>Dan
>
>
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--
Raj, VU2ZAP
Bangalore, India.
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