I use a Stamford Research SR-620 with a GPS Discipline oscillator for a
reference. However, many less expensive counters will resolve to 0.1 Hz or
better.
This is the key when one needs to determine a frequency such as the BFO's
being; 9.000400 MHz or 9.000000 MHz or 9.003000 MHz or 9.002295 MHz or
9.002215. These are values to 1 Hz. These are the frequencies of the BFO's
depending on mode, per the Ten-Tec manual.
I do not view a receiver to be a frequency determining instrument. Just
think, what would be the likely result if you didn't know your Omni VI was
not correct and you used it to make a measurement or calibration?
It was pointed out earlier that I implied the adjustment had to be 0.1Hz.
Nope, that was not what was stated. I stated "a frequency counter with an
accuracy of 0.1Hz or better is required" . The adjustment needs to be
resolved to 1 Hz.
73
Bob, K4TAX
----- Original Message -----
From: "Jim Allen" <jim.allen@longhornband.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, July 30, 2014 9:38 AM
Subject: Re: [TenTec] Omni VI Mystery
What kind of frequency counter does that?
73 de W6OGC Jim Allen
On Wed, Jul 30, 2014 at 9:27 AM, Bob McGraw - K4TAX <RMcGraw@blomand.net>
wrote:
The frequency has to be resolved to 1 Hz or better per Ten-Tec info.
This BFO along with the HF osc and VFO all have a relationship with
regard
to the final frequency received or transmitted. Any error at any of
these
makes things worse. I've always practiced that the final frequency
resolution should be done by an instrument capable of an accuracy of 1/10
the final value. Hence to resolve to 1 Hz a resolution of 0.1 Hz is
required.
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