Art, I guess the correct answer is yes and yes. There are a lot of crappy
signals on the bands. I think if you added the next 500 hz filter (6 mhz I
believe), you will eliminate most of the problem signals. I had the exact
same rig you do a couple of years ago, and had a borrowed 6 mhz filter, and
I didn't notice the problems you mention. With the 6 mhz filter and use of
the PBT, I think will really help your situation. I think Inrad still makes
roofing filters for the Omni 6 that would help also, but in my situation, I
didn't feel I needed it with the Omni 6. The good news is that you can find
Ten Tec filters at a very reasonable price. Many Yaesu 1000 MPs are on the
air, and if they have not had the "key click mod", they can cause a lot of
trouble. For more info on "key clicks", check out
73, Mike K9MI
----- Original Message -----
To: "Discussion of Ten-Tec Equipment" <email@example.com>
Sent: Friday, December 14, 2007 13:28
Subject: [TenTec] almost OT (involves Omni VI)
> I've noticed that with my Omni VI (opt 3) on 40 meters I will clearly hear
> key clicks from some stations, with what sound like true keying sidebands
> when they are stronger than S9+10 or so, and keying with a bug or straight
> key. These clicks or keying sidebands can be 5 khz away and still S9+,
> and are not nulled by using the 500hz 9mhz filter.
> There are some stations where I pick this up even if they are using a
> So...question 1: can the use of a straight key or bug produce keying
> sidebands or clicks if good solid contact is not being made (as sounds to
> be the case in this situation); and
> Is the Omni VI especially sensitive to the received CW wave form (perhaps
> due to something in its AGC structure)?
> I have listened with AGC fast, slow and off...and these keying sidebands
> and/or clicks are still there.
> So is it me...or just that many crappy signals on 40 meters?
> Art, K0RO
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