[TowerTalk] Thumper

[Tom Osborne]

Do you have a computer hooked to your radio?  Sometimes the poling will make 
a noise in the receiver in sync with the poling speed.  73
Tom W7WHY

----- Original Message ----- 
From: "Merlin-7 KI4ILB" <merlin-7 at sc.rr.com>
To: <TOWERTALK at contesting.com>
Sent: Wednesday, July 12, 2006 1:21 PM
Subject: [TowerTalk] Thumper


>I know this is not the best place to ask this but I do not want to join any 
>more NG's
>
> What causes the thumping sound that you can get (I mostly hear it on 20m) 
> on HF? They are about 1 secound apart and in perfect time. Last night they 
> were about S7 and covered from below 14.225mhz up to about 14.300mhz.
>
> Just curious..
> Thanks
> Joe
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