[TenTec] OMNI VI/VI+ Roofing Filter Mod. vs NB Function andFM/FSK Mode Operation

[John L Merrill]

INRAD claims the 600hz roofing will not render FSK useless. You can still
use fsk but I can't imagine it passes the high tones too well.

John N1JM

-----Original Message-----
From: tentec-bounces at contesting.com
[mailto:tentec-bounces at contesting.com]On Behalf Of Clark Savage Turner
Sent: Sunday, February 27, 2005 8:16 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] OMNI VI/VI+ Roofing Filter Mod. vs NB Function
andFM/FSK Mode Operation


Thanks for the info regarding the NB, Dave.  I think you pioneered (I
recall some early correspondence with you on this!) the roofing filter
ideas for the OMNI VI.  I appreciate it.

On Feb 27, 2005, at 8:03 AM, Dave Bowker wrote:
>
> BTW: The FM receive mode is also inoperative with the roofing filter
> mod. because of the narrow
> bandwidth preceding the FM receiver section;  FSK mode is inoperative
> because of the roofing
> filter(s) incompatible offset(s).

One note to this (especially to new guys), the Inrad mod itself does
NOT render FM or FSK inoperative.  If you don't engage the Inrad
roofing filter by pressing the NAR button, FM and FSK are fine, since
you allow the wider roofing filter to stay in line.  The NAR button
selects and deselects the additional narrow roofing filter according to
your preference.

Clark
WA3JPG

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