Dick - Alaska receiving system still up and running on 135,922 ok as of UK
Sunday morning-
vy 73 Laurence en route Cumbria
From: Dick Rollema <[email protected]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: LF: Re: QRSS by PA0SE
Date: Sat, 13 Dec 2003 17:11:57 +0100
To All from PA0SE
Tnx to Alan and Jim for their comments.
I intend to do so beaconing and as a compromise will use QRSS10. I will
try to stick to 135.922kHz, the frequency K1LX is monitoring (hope the
receiver is on during his stay in London).
I will start at 2200 UTC on Saturday and perhaps continue till 0800 UTC on
Sunday.
I can check the frequency with a counter having 1 Hz resolution at ten
times the transmit frequency. But It is unrealistic to expect I can
maintain frequency to that accuracy, especially during sleeping time.
Text will be PA0SE repeated.
Keeping my fingers crossed....
73, Dick, PA0SE
At 10:51 13-12-03, you wrote:
Dear Dick,
It depends what sort of operation you are going for - most random 2-way
QSOs take place between about 137.650 and 137.750kHz at a speed of 3s/dot.
At this speed, a few Hz drift is not a serious problem, and VFOs are quite
practical, provided you monitor the frequency. The easiest way to do that
is to watch your TX frequency on the RX spectrogram display - that way it
is easy to see if your QRG is drifting across someone else's signal. At
most QTHs there are fixed-frequency spectral lines visible in the display
which make convenient calibration markers when you get to know them. Most
operation seems to take place after dark and before midnight, but it is
not unusual to see QRSS during the day.
For the transatlantic or other long-distance beacon-type operations,
longer dot lengths are needed, usually 30s or more, with consequently
better stability. The choice of frequency varies according to prevailing
activity - at the moment, the trend is for non-european stations to use
frequencies around 137.78kHz, while the Europeans use around 135.92, to
avoid causing blocking to nearby stations - but this varies between
individual operations. For transatlantic beacons, propagation normally
starts to open up about 2300 or so, and to fade out when it gets light,
about 0800utc.
Good luck - not sure if I will be QRV today or not, but will try to be
tomorrow evening, so might see you then.
Cheers, Jim Moritz
73 de M0BMU
As I am new to QRSS I have some questions:
1. What frequency to be used.
2. What speed to be used.
3. At what times transmission to be started and finished.
73, Dick, PA0SE
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