Bruce,
I have a similar counter, but with LCD instead of LED display. The firmware automatically adjusts for the divide-by-64 prescaler and displays the actual input frequency. It also has provision to add or subtract a fixed frequency offset so that it can measure the local oscillator of a receiver but display the signal frequency.
--John Gord
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On Sun, May 24, 2020 at 05:31 PM, ebrucehunter wrote:
After acquiring a TR-503 tracking generator for my 492 spectrum analyzer, I
was on the lookout for a DC508A counter with the proper option as an add-on.
But in time I realized I have several counters that can be connected to the
TR-503's auxiliary output to accurately display frequency, so I dropped the
idea. But the other day I saw an ad for this $18.95, eight-digit 2.4 GHz
counter found at that looked
like it might serve as the basis of a dedicated counter if a suitable crystal
time-base could be added. Looking on the usual auction site, it appeared
these counters are available there for even less.
It was kind of alarming to read that a VCO is being used as a time-base.
Also, they mentioned a divide-by-64 function being used for higher
frequencies; so it is not clear whether, in that range, the counter displays
actual frequency or that divided by 64. Anyway, I thought this might possibly
be of interest to others for incorporation in projects. Has anyone
investigated these?
I have no connection with the seller, other than having bought parts from
them.
Bruce, KG6OJI
