[K3CAL] interesting intermod read

[wa4prr at comcast.net]

Jim & All- 

I just talked to Dale at PAR. He recommends a custom High-Pass Filter to eliminate both the 39 MHz pager and the 106.7 FM signal from reaching our receiver front end. It would be installed at the receiver input after the duplexer. It will be a custom filter, built for us, and will cost $119.00. He can produce a filter in about 3 days after order. If we want to pursue this solution, I will need the exact frequency of the county pager. 

Good find on the filter company, Jim. 

Ron 

----- Original Message -----
From: "Jim Tetlow" <jimtetlow at chesapeake.net> 
To: "Calvert Amateur Radio Association - K3CAL" <k3cal at mailman.qth.net> 
Sent: Tuesday, July 26, 2011 11:22:29 AM 
Subject: [K3CAL] interesting intermod read 




All-FYI 



While researching a filter for intermod. Most were limited to HT's and lower power transceivers; not repeaters. I did however find a link on eHam.net which I have attached above. Read review by NM7R; this may warrant some investigation of PAR notch filters (I think we are looking at a different frequency as 39mhz or so ) but these can be built custom, still under $100.00 and he used this on a repeater. The downside it may limit sensitivity on receive side. Just a thought, comments encouraged. 





Regards, 



Jim Tetlow 



K3UGA 

jimtetlow at chesapeake.net 


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