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From: WMartin@SIMTEL20.ARPA
Newsgroups: net.ham-radio
Subject: Re: some questions about UNIDEN CR2021
Message-ID: <12142@sri-arpa.UUCP>
Date: Tue, 18-Sep-84 10:41:24 EDT
Article-I.D.: sri-arpa.12142
Posted: Tue Sep 18 10:41:24 1984
Date-Received: Wed, 26-Sep-84 00:51:44 EDT
Lines: 21

From:  William G. Martin 

I think the antenna-trim on the CR-2021 is just changing a variable
capacitor in series with the antenna input; that's what "antenna tune"
controls on other radios I've seen have done. As for the whip vs.
external, the whip is always active, I am sure. This can cause problems
if you try to use an external medium-wave loop antenna for Broadcast-Band
DXing, but otherwise shouldn't have much ill effect. I have some Uniden
literature on the CR-2021, and it gives no technical specs at all, so
I don't know the bandwidths or RF attenuations. As to modifications,
sounds interesting, but I have heard of none yet. 

By the way, has anyone out there gotten a SERVICE MANUAL yet on
the CR-2021, and, if so, please tell the list the price and where to
write to order one. I have the Sony 2001 manual, which was only $2.00
from the Sony Kansas City parts depot, but, even if the circuit is
similar, the mechanics are different enough that the real service manual
would be worth having.

Will Martin
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