[R-390] Rockwell Torsional Filters - please read

[Tom Norris]

I found the brochure for low cost line of mechanical filters from  
Rockwell-Collins

http://www.rockwellcollins.com/content/pdf/pdf_5532.pdf

The in/out impedance of these filters is is around 2k ohms - but  
that's easily taken care of.  See Dallas' article at http:// 
www.kongsfjord.no/dl/dl.htm where he discusses adding a "roofing  
filter" to the IF deck. That should give folks plenty of info to get  
going.

And yes, reread Langford's article in HSN #30, etc.




Tom Norris NU4G
R390A at BellSouth.net

"Just because your children were born in the South does not make them  
Southerners. After all, if a cat had kittens in the oven, that  
wouldn't make them biscuits."