Message-ID: <4736.200103191732@gemini>
From: "James Moritz" <j.r.moritz@herts.ac.uk>
Organization: University of Hertfordshire
To: rsgb_lf_group@blacksheep.org
Date: Mon, 19 Mar 2001 17:37:47 +0000
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Subject: LF: WOLF BPSK tests tonight
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Reply-To: rsgb_lf_group@blacksheep.org
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Dear Wolf, Rik, LF Group,

I will try some lower power WOLF BPSK tests tonight, starting 
about 2000utc. Because different stations are experiencing widely 
different signal levels, and since with weak signals the WOLF 
software requires quite a long run of signal to successfully decode, 
I will start off with big steps in power level every 20mins or so, so 
we can determine roughly what levels will be interesting for future 
tests. 

I will start at the 300mW ERP level, and reduce power in 10dB 
steps - say 30mW, 3mW, 300uW. At each step change I will 
transmit the CW station ID and the ERP level for the next period, 
followed by 3 minutes of carrier for frequency checking, all 
transmitted at full power. Then I will reduce the TX power level and 
start sending BPSK, until the next station ID. The frequency will be 
137.500kHz again. I will listen on the frequency afterwards if 
anybody wants to call in CW about the tests. At some time 
between 2300 and 0000, I will start up again with the full 1W ERP 
for the benefit of North American stations.

I hope this is OK - let me know if you would prefer something 
different!

Cheers, Jim Moritz
73 de M0BMU