[Milsurplus] PRC-47 mods

[B. Smith]

The main mod for the PRC-47 is to install an RIT control, Details at
http://solo11.abac.com/zorroab1/prc-47%20Frequency.htm

Lots of folks have installed the  Collins filter for lower sideband but 
unless you get the filter with the same exact characteristics(model number, 
batch etc) of the one that is installed you will have to be prepared to 
retune the IF stages. This requires an  extender for the assembly. Been 
there many times and done that. Usually I install the two filters and tune 
the IFs for best response between the upper and lower and utilize a  small 
micro relay conected to contacts on the   power switch light control to 
control upper and lower sideband.  I am working on another mod for a 
different injection frequency which will allow the user to just use the 
original Collins filter but unfortunately the frequency read out will be 2 
kcs off.   :-)

73 breck k4che
"Crystal-controlled, weak, and on AM is no way to go through life"



----- Original Message ----- 
From: <jjhaggerty01 at excite.com>
To: <milsurplus at mailman.qth.net>
Sent: Wednesday, August 29, 2007 12:22 PM
Subject: [Milsurplus] RE: Milsurplus Digest, Vol 40, Issue 40


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| PRC-47 QUESTION
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| I am considering buying a PRC-47. I would like to hear from any users of 
these radios and their experience with the RT. I would also appreciate 
hearing comments about modifications and the use of the radio for SSB and CW 
operations.
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| Tx and 73,
| John,
| KB1KRN,
| AAR1AB/T
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