[Milsurplus] adding LSB to PRC 74A?

[Spike Dennis]

There is USB activity via Milpack & HFpack on 75 & 40 meters.
On 40 every day on 7296(daytime) & around 7205 every night at 02:00z! On every Wed night at 21:00 central & 21:00pst on 3996 as well as when he need arises.

In addition, the PRC-74 can be used on 60 meters, there is a trick to it, but it can be done. Buy ki0pf's book which also details 160 & 17mtr operation.
I have a LSB kit provided by Jim Karlow for mine but I have never felt the need to install it.
Dennis Starks
Military-Radio-Guy
KB0SFP
Monitor(all USB): 
3996, 5403.5, 7296, 14342.5, 18157.5 



----- Original Message ----
> From: Al Klase <al at ar88.net>
> To: boeing377 at aol.com
> Cc: milsurplus at mailman.qth.net
> Sent: Tuesday, May 26, 2009 8:12:43 PM
> Subject: Re: [Milsurplus] adding LSB to PRC 74A?
> 
> Mark,
> 
> I can't find my notes, so I'm working from memory.  The heart of the 
> PRC-74 transceiver is a 1750 KHz LSB IF amp/filter.  The conversion 
> scheme involved adding a modern crystal oscillator module at, say 1747 
> KHz that moves the injection to the other side of the filter.  I think 
> there was a miniature relay to switch between USB and LSB.  Of course 
> you're left with a 3 KHz frequency error on the readout.
> 
> I think the only good answer is to get some Mil-HF-Pack activity going 
> on 75 and 40 meters.
> 
> Regards,
> Al
> 
> boeing377 at aol.com wrote:
> > Is there anything published on this mod? Filter availbility and price?
> >
> > 73,
> > AF6IM
> > Mark
> > ______________________________________________________________
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> 
> -- 
> Al Klase - N3FRQ
> Jersey City, NJ
> http://www.skywaves.ar88.net/
> 
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