The accuracy is only as good, but not better than the instrument one uses.
The Omni VI Plus on the bench was checked on all bands, CW mode. The
following is the discrepancy between the frequency display and the measured
TX frequency. The radio display frequency resolution is 10 Hz. with VFO
steps of 10 Hz.
{Numbers are rounded to the nearest Hz.}
160M +22 Hz
80M +22 Hz
40M +24 Hz
30M +25 Hz
20M -21 Hz
17M +28 Hz
15M -19 Hz
12M -17 Hz
10M -16 Hz
I could have tweaked on it more and moved 17M to a value of about +25 Hz but
in doing so 20M would have ended up at about -25 Hz. So the basic accuracy
is about +/- 25 Hz. or better. I'd say not bad for a 30 year old radio.
The same test was performed on my Tentec Eagle. The result was +/- 3 Hz for
all bands. The radio spec is +/- 5 Hz with a 1 Hz radio display frequency
resolution with VFO steps of 1 Hz.
It seems that technology has greatly improved things.
73
Bob, K4TAX
----- Original Message -----
From: "Peter Bertini" <radioconnection@gmail.com>
To: <tentec@contesting.com>
Sent: Monday, October 20, 2014 8:41 AM
Subject: Re: [TenTec] OMNI-VI question
Resolution in a counter is secondary to its internal time base accuracy.
There are a lot of cheap counters that have time base references that are
worse the the master oscillator in the Ten Tec. Just because a counter
reads to a tenth of a cycle, doesn't mean the reading is accurate.
Pete
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