[TenTec] Roof filters

[Duane A Calvin]

I don't think the 300 Hz roofing filter would be too narrow for RTTY -
the 170 or 200 Hz shift used in RTTY or Pactor should have no problems
within a 300 Hz 4-pole filter.  Remember, sharp skirts are not required
for a roofing filter.  I use the 500 Hz 8-pole filter in my Orion I
consistently on RTTY with great results.  It's probably close to the
equivalent of the 300 Hz 4-pole, or very close....

        73,  Duane


On Mon, 13 Mar 2006 18:35:14 -0600 "Don and Diana Cunningham"
<wb5hak at duracom.net> writes:
> Bob,
> I'm sure you will get all kinds of ideas, and the advice I have 
> already seen 
> concerning roofing filters vs standard ones is good, but I just 
> installed 
> all three optional ones in my O2 today.  I'm afraid the 300 cycle 
> one might 
> be a little narrow for my RTTY use (even though I put it in, hi), 
> and 600 
> seems just about right so I can still have RTTY chats on contest 
> weekends, 
> hi.  Whichever way you decide, you will LOVE the Orion II.  I'm glad 
> I have 
> mine, even if we are growing a little with the software.
> 73,
> Don, WB5HAK 
> 
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> 


--------------------------------------
Duane Calvin, AC5AA
Austin, Texas

http://home.austin.rr.com/ac5aa