Hi Gary, you are probably getting a big signal from around the natural
resonance of the loop. There are quite a lot of strong FSK signals in the
region around 400 to 600kHz you may be seeing a Navtext signal from 518
intermoding. Measure the strength of the RTTY and then put an attenuator in
front of the RX (say 6dB) if the FSK goes down more than 6dB it is intermod.
It will go down 12 dB for 2nd order and 18dB for 3rd order. That might be
enough to make it disappear completely. Tuning should also remove it of
course.
Cheers de Alan G3NYK
----- Original Message -----
From: "Gary - G4WGT" <[email protected]>
To: <[email protected]>
Sent: 13 February 2005 21:22
Subject: LF: RE: Re: RTTY signal
Hi Alan & LF,
Its a strange one, I realise now that I have only been seeing this signal
since the LF vertical was damaged in the gales & I am now receiving on the
G3LNP loop which is untuned at the moment due to following Walter DI2AG on
440 KHz, maybe it is introducing a strong out of band signal (I can also
receive it weakly on the FT-747). I will try reconnecting the tuning cap &
tune it for 136 again & let you know.
Regards
Gary - G4WGT
Web: http://myweb.tiscali.co.uk/wgtaylor
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Alan Melia
Sent: 13 February 2005 20:58
To: [email protected]
Subject: LF: Re: RTTY signal
Hi Gary I have only just seen your message but I see nothing on that
frequency at the moment. I have been monitoring most of the day and I
think
would have seen a strong signal on Spectran though it would be off screen
on
ARGO.
Cheers de Alan G3NYK JO02pb
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