Message-ID: <2000123112535868199@zetnet.co.uk>
Date: Sun, 31 Dec 2000 12:53:58 GMT
To: rsgb_lf_group@blacksheep.org
From: "Peter Dodd" <g3ldo@zetnet.co.uk>
Subject: LF: Re: Apology
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Steve GW4ALG said

> As many of the the stations worked were using 136.5 +/- 200 Hz,
> you can imagine my disappointment when QRM from the intermittent
> carrier appeared on 136.5, with strong sidebands +/- 100 Hz
> (already mentioned in other postings to this reflector).  I did
> try for further contacts: I stuck it out for a couple of hours,
> but everyone else had given up - so I went to bed too.  A
> disappointing end to an otherwise successful day.

In addition Steve sent me a direct e-mail reprimanding me for poor 
operating,  i.e using QRSS in the CW segment of the band and not 
sending QRL? before transmissions.

Firstly I apologize to Steve for spoiling his operating session and I 
feel that an explanation is in order.

For the last few weeks several of us have been receiving VE1ZZ  using 
QRSS on 136.5kHz. This has not bothered CW operators because the 
signal is around 15 to 20dB below the noise and inaudible to CW operators. 

Last night, John, VE1ZJ indicated that he had installed Argo Beta1 
software and would looking for any transmissions from EU in between 
VE1ZZs transmissions. The monitoring frequency was not given.  
Previous listening/looking frequencies were below 135.8kHz but since 
then the Greek RTTY station had moved down there. Additionally, if 
VE1ZJ was monitoring VE1ZZ I reasoned that the place he would be 
looking was near VE1ZZ's frequency.

After 2300 the only stations I could see was VE1ZZ on QRSS and Steve 
calling CQ a bit further up the band. (I could not respond to Steve 
because the system was set up for QRSS).  No other stations were 
present so I felt it was safe to transmit when VE1ZZ stopped. I went 
into listening mode during the planned VE1ZZ transmission times.

To make things worse I appear to have had some instability with the 
transmitter driver during the transmit session just before 2359 
hours. Again I apologize to Steve (or anyone else who this affected) 
and I will be QRT until the transmitter fault is resolved. The 
problem may have been cause by the very low temperature in the LF 
shack last night.
Steve also reported 100Hz sidebands. Have other operators noticed this?

It is obvious that some procedure will be required if the proposed LF 
tests with VE in January are to be achieved without conflict. Your 
suggestions are welcome.

All the best for the New Year 


-- 
Regards, Peter, G3LDO

<g3ldo@zetnet.co.uk>