[Elecraft] RTTY Dual Passband Filter and RFI?

[W0MU Mike Fatchett]

I have been using dual PB most of the night.  No problems here. 


"A slip of the foot you may soon recover, but a slip of the tongue you may
never get over." Ben Franklin
-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of wayne burdick
Sent: Friday, February 13, 2009 8:42 PM
To: w3zv at verizon.net
Cc: Elecraft
Subject: Re: [Elecraft] RTTY Dual Passband Filter and RFI?

Ron,

We haven't been able to reproduce this (yet).

Are you using the latest beta release (2.82)? It includes a menu entry
called CONFIG:AFSK TX. If you set it to FIL ON, you'll have a 400-Hz filter
around the RTTY transmit tones. Please try that. It should clean up noise,
if that's the issue.

I still don't see how DUAL PB could have anything to do with it. When you
get a chance, please send me your entire receiver setup.

73,
Wayne
N6KR



On Feb 13, 2009, at 6:41 PM, Ron W3ZV wrote:

> I am working the CQ WPX contest. K3 & FL-7000 amp at about 300W. When 
> I engage the dual passband filter, I hear a rough buzz, which sounds 
> like RFI, on my monitored transmit signal. When I disengage the DPF, 
> my signal sounds clean in the monitor. I continue to make contacts, 
> but a contest is not a great place for critical signal reports. Any clues?
>
> Ron W3ZV
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