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G0FTD > TECH 13.01.05 08:05l 60 Lines 1651 Bytes #999 (0) @ WW
BID : A09301G0FTD
Read: HA1SE GUEST DL5MCG OE7FMI
Subj: QRMSTOP.ZIP info
Path: DB0FHN<DB0MRW<OK0PPL<DB0RES<ON0AR<ZL2BAU<VK4TRS<CX2SA<GB7CIP<GB7SXE
Sent: 050112/1913Z @:GB7SXE.#38.GBR.EU #:19045 [Hastings] FBB7.00i $:A09301G0FT
From: G0FTD@GB7SXE.#38.GBR.EU
To : TECH@WW
QRMSTOP.BMP
This circuit was developed by G4WMX and the late GW3DIX.
It was later marketed by SEM in the Isle of Man as the QRM Eliminator.
(It's own was a regular on the net we used to take part in).
[USEAGE]
You need to have a "noise" antenna.
The best noise antenna is an antenna which receives the interfering signal
the strongest!
There are 3 controls, BALANCE,PHASE 1 and PHASE 2.
The idea is that you try to keep the balance control as far over to the
main trx antenna as possible whilst using the 2 phase controls to steer
the QRM 180ø degrees out of phase to cancel itself out and leaving the
wanted signal alone.
[DOES IT WORK?]
YES!
ABSOLUTLY!
BRILLIANT!
I have a homebrew version here.
It is TOTALLY possible to eliminate an S9+60DB signal and listen to an
S4 signal with complete ease.
It's all a case of undertstanding the 3 simple controls. If you don't
then you just attenuate the wanted signal !
It works perfectly on QRM, jammers etc just so long as both signals
retain their phase relationship.
The file is sent as 8 parts of 7plus.
7 parts are approx 7kb with part 8 as 6kb.
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³ 73 - Andy ³
³ G0FTD ³
³ Whitstable, Kent ³
³ Winpack-AGW ³
³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³
³ ³ Û ³ ³
ÀÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÙ
I'm reclaiming my hobby from the ignorant - are you ?
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