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[TenTec] 1220 "birdies"?

To: <tentec@contesting.com>
Subject: [TenTec] 1220 "birdies"?
From: wb5jnc@juno.com (wb5jnc@juno.com)
Date: Sun, 26 Aug 2001 19:33:23 EDT
Greetings all,

Are there any documented "birdies" in the T-Kit 1220 2M rig, and if so,
where are they? I have noticed a few on mine, but only one is of much
concern: 145.350, which is the output frequency of an area repeater. I
have concluded that it is internally generated rather than being from the
local cable TV sieve (er, system) because it is still there with the rig
connected to a well-shielded dummy load. (CATV leakage is another issue
at this QTH -- and I don't even have a cable drop from their system on my
property.) 145.350 isn't an obvious crystal harmonic or sum/difference
product of anything I could come up with in the rig, but I may be missing
something. Is this a design issue with the 1220 or is it a
construction/alignment issue with this unit?  (I purchased the rig used
so I don't know its history other than that it appears to have been built
by an experienced kit builder -- very good soldering, etc.) Any

73, Al

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