Stuart is absolutely correct on this one. I've observed that most will try
to tweak a rig to see if it needs tweaking. If it doesn't need tweaking,
don't tweak it.
Should one determine that a radio is out of alignment then it should be
aligned. However, one must first determine that alignment is need without
tweaking first. Now how does one go about this? Measure specs,
sensitivity, bandpass response, S/N ratio, image rejection and etc. If you
can't make these measurements then you don't have the proper equipment to
align or tweak it either.
73
Bob K4TAX
----- Original Message -----
From: "Stuart Rohre" <rohre@arlut.utexas.edu>
To: "MW0CDO" <gw7lhi@hotmail.com>; "tentec" <tentec@contesting.com>
Sent: Monday, September 16, 2002 3:32 PM
Subject: Re: [TenTec] How to Align an Omni V?
> My philosophy on old rigs, is if they are picking up signals well, are in
> frequency calibration with minor adjustment of oscillator trim, and signal
> noise goes down when an antenna is disconnected on any band, there is
> nothing to be gained by tweaking internal adjustments, and much to lose if
> you goof up an alignment. Simply cleaning many science instruments which
> have coatings of dust and grundge often brings them back to full
calibration
> without tweaking a pot, or trimmer cap, or IF can.
> 73, Stuart K5KVH
>
>
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