[Lowfer] Screen shot from Maine

Fri, 05 Jul 2002 22:32:05 -0400

Hi John,

There's no way you could be getting the humungus, continuos, storm noise 
that I am getting and put up a neat ARGO capture like that!! I DID make some 
findings with my loop and receiver setup under these conditions late this 
afternoon.

1) The varicap and remote tuning, via coax, account for some vertical 
blurring of your graphics. I removed this tuning and installed a VC.

2) Switching to the E-probe, 50ft in the air, removes to bluring effect, but 
the S/N (N=storm noise) is poorer compared to the loop S/N. In fact, Jay's 
signal (115mi) is very weak on the screen when I use the the E-probe.

3) When I disconnected the pre-amp at the loop site. There was still a good 
level of storm noise at the receiver 250ft away.

4) Switching out the 250Hz filter on the R75 removes most of the blur when 
using the modified loop setup. I seldom see an inprovement when I try this 
but the storm noise is runing 20 to 40uv/m!

Hope the noise is lower tomorrow. This is not from local T-storm activity.

Bill A

>From: "John Andrews" <[email protected]>
>Reply-To: [email protected]
>To: <[email protected]>
>Subject: [Lowfer] Screen shot from Maine
>Date: Fri, 5 Jul 2002 15:46:19 -0400
>
>A shot of TAG's graphical format (with VD underneath) taken at 130 miles
>from TAG can be found at:
>http://webpages.charter.net/w1tag/TAG.jpg
>
>John Andrews, W1TAG
>
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