At 13:05 10/21/2009, Dan Edward wrote:
hi dave
my grounding is 'decent'; short heavy leads everywhere, even to the
ground rods themselves. two ground busses across the back edge of my
desk and shelf.
and on everything, f3k, pc, other rig, monitor, final. no ant tuner;
i'm a big believer in
matching at the feedpoint.
That was not my main problem, my main problem was RF coming in the
mic input line.
see below
--- On Wed, 10/21/09, Dave Gomberg <da...@wcf.com> wrote:
From: Dave Gomberg <da...@wcf.com>
Subject: Re: [Flexradio] cw ....
To: flexradio@flex-radio.biz
Date: Wednesday, October 21, 2009, 7:43 PM
At 12:01 10/21/2009, dan edwards wrote:
>when i first key up on cw, the signal sounds 'raspy', like there is
>something loose
>or arcing. after sending a bit, seems to clear up..i can hear it in
>my speakers and
>on a second receiver. nasty sounding...
Your description of the sound resembles what I heard when I had a
serious RFI problem.
Does the degree of rasping vary with the output power (lower with
less power)?
**************
doesnt seem to. tried various levels, still there. even into a dummy load...
it does go away after i've been transmitting a bit.....
*************
Are
you using an amplifier?
***********
not today, testing at lunchtime on 160; barefoot. but at night, if a
new one shows
up, i fire up the homebrew 3-1000a...
**********
Is your rig near the antenna???
*************
not particularly, about 90' away, other side of the house. series
fed marconi-T
over 25 fifty foot radials; 40' tall, 120' long. matched at
feedpoint with series
and shunt L...the horiz wire does not cross the shack...
**********
73, w5xz, dan
--
Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com
All addresses, phones, etc. at http://www.wcf.com/ham/info.html
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