I realized that Bill's message was not transceiver-specific. My preceding
message applies only to the Omni Six/Six Plus, not previous OMNIs whose
filters may be compatible in the 9 MHz I.F. stage, including the OMNI V.
The reason for my concern with the OMNI Six series is that a 2.4 kHz filter
centered at 9,001.500 kHz is designed with a lower filter knee of 9,000.300
kHz, leaving only 100 Hz of error for adequate passband of the CW BFO
frequency. As long as the 10-pole filter is precise with predicable QC,
this filter should still work with the Omni Six/Six Plus.
From: Bill Cook <email@example.com>
To: Greg Hodsdon <firstname.lastname@example.org>; email@example.com
Date: Monday, December 28, 1998 9:18 AM
Subject: [TenTec] Re: 2.4khz 9mhz pri INRAD Filters
>George at INRAD will make a special order of 10pole, yes 10pole, 2.4khz
>wide 9.0015mhz center frequency drop-in primary filters if we have enough
>people call him and place an order. These will cost more than the 8pole at
>$110.00. How much more is unknown(maybe in the $130.00 area). With a
>minimum of 5 orders he did say they would be made! The good thing about
>INRAD filters is the center frequency accuracy and the much better symmetry
>the stock filters. Less ripple too.
>INRAD telephone is: 541 459 5623
>FAQ on WWW: http://www.contesting.com/tentecfaq.htm
>Administrative requests: tentec-REQUEST@contesting.com
FAQ on WWW: http://www.contesting.com/tentecfaq.htm
Administrative requests: tentec-REQUEST@contesting.com