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Re: Drake frequencies



Good question about which several have made good comments.  What I did was
have a crystal made up for 8.507813.  What this did was convert 2400 to the
stock IF, or 222 MHz.  For me, the added filtering that the stock Drake
includes at this IF is an added bonus.  I have a good receiver for that IF
freq (commercial grade surplus).  Thus, my only modification is a new
crystal for the LO.  In my world of high noise levels, filtering is
everything.

Gary Memory, N7BRJ/DA1BRJ

--- Original Message -----
From: "Floyd Rodgers" <kc5qbc@swbell.net>
To: <amsat-bb@AMSAT.Org>
Sent: Tuesday, February 13, 2001 6:13 PM
Subject: [amsat-bb] Drake frequencies


>
> What is the output frequency of the unmodified Drake as related to AO40
> downlink frequency?
>
> Why should I modify the drake output frequency to be in the trasmitter
> output rage (i.e. 144mhz) ? If drake downlink freqency is outside the
> normal transmit range, the radio will protect the converter by not
> transmitting out of band. I assume then the uplink signal would be sent
> from the 432 side of the same radio or another separate radio via
transverter.
>
> Floyd Rodgers KC5QBC
> Multi ended candle burning artist in training
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