[ILQSO] Line noise

[James Funk]

I have an FT900, and the noise blanker is pretty decent for ignition
noise, electric fences and such.  It has NO effect on line noise.  It
also introduces a lot of distortion if there are adjacent strong signals
(think "contest environment"....).  I avoided using it as much as
possible, but it wasn't helping anyhow.

I have an IC746Pro that I've considered putting in the car, though it's
not what I'd call a "mobile rig".  I might just take it on a tour of the
neighborhood and see what the NB does compared to the FT900.

Just like the Cubs and the Indians..."wait 'til next year'.

-----Original Message-----
From: ilqso-bounces at mailman.qth.net
[mailto:ilqso-bounces at mailman.qth.net] On Behalf Of Joe LeKostaj
Sent: Monday, October 22, 2007 10:10 AM
To: Illinois QSO Party
Subject: [ILQSO] Line noise

At 3:49 PM +0200 10/22/07, James Funk wrote:
>
>When the line noise is S9 or higher and you don't have time
>to pull off onto a line-less side road, I don't know what to try.
>Comments from other mobiles?? 
>

Jim,
A very tough problem indeed. There always seem to be power lines 
paralleling the county line roads, so they're especially hard to 
avoid for an ILQP county line operation. Obviously a noise blanker 
such as the one in the IC-706 is a good start but it's not completely 
effective. I suspect there's a lot of variance in the noise spectra 
of different power lines.

I wonder how good the digital noise blanker in the IC-7000 is. Icom's 
website says "The NB level and width (blanking duration) are 
adjustable in 100 steps." Of course, it's hard to dink around with 
the settings when you're flying down a gravel road.

Anyone out there with an IC-7000 who can comment on the effectiveness 
of the digital noise blanker for power line noise?

73,
Joe K9LY
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