[TenTec] 564 9 mHz Filters

[Ken Brown]

Hi Bob,

     I am using the Ten-Tec 217 and 221 filters in my Omni VI option 3. 
The 221 is a "low note" 250 Hz BW filter for CW, and the 217 is 
Ten-Tec's 500 Hz CW filter. I have no experience with the Inrad filters. 
I'm sure if you pick the right ones they are great.

     I have often thought about putting a 218 in the "default" filter 
slot in place of the normal 2.4 kHz filter (model 220, stock number 
48058, I think). This would make the maximum receive AND transmit 
bandwidth 1.8 kHz. The SSB might not sound very nice, but with the 
"proper mis-adjustment" of the BFOs might make it usable and possibly 
even good for pileup busting. The adjustment would probably have to be 
done specifically for each persons voice, so this would be a one 
person's radio. And the frequency readout would be incorrect by whatever 
amount the BFOs are off nominal frequencies. Or if you really never 
intend to use the rig on SSB, just leave the BFOs adjusted properly. 
I've never tried this, but the idea sounds interesting.

     I'd love to see an after market custom 9 MHz IF board for the Omni 
VI that would allow those of us with version 1 and 2 Omni VI to have 
more than one narrow option filter in the 9 MHz IF. If it had yet 
another slot, even people with Omni VI+ and version 3 might want one.

DE N6KB


Bob Good wrote:
> I just purchased an Omni VI Plus (564) and I am looking to fill my "N-2" 
> filter slot.  I have a 1.8 mHz TT filter in N-1 and the full complement in 
> the 6.3 slots.  I am 90% cw and have operated a Omni VI (563) for 17 years. 
> I want a 500 Hz filter in this slot.  In your opinion should I purchase the 
> TT 217 or an "Inrad"  filter?  Roofing filter is a term I have yet to learn. 
> Your thoughts would be appreciated.  Any help for the OM?  Thanks  Bob K4BG 
> k4bg at planters.net 
>
>
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