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Message-ID: <3.0.1.16.20010320094329.2dbf5db2@mail.cc.kuleuven.ac.be>
Date: Tue, 20 Mar 2001 09:43:29
To: rsgb_lf_group@blacksheep.org
From: "Rik Strobbe" <rik.strobbe@fys.kuleuven.ac.be>
Subject: Re: LF: WOLF BPSK tests tonight
In-reply-to: <4736.200103191732@gemini>
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Hi Jim,

Sorry, I couldn't be QRV last night. 
Regarding power levels :
On a second thought it is OK for me if you run high power for the TA test.
I can reduce your SRN by receiving on a short piece of wire. If I keep the
wire indoor the household electronics will provide sufficient noise.
At a later stage it might be interesting to have a test sequence with
reduced power level for inter-EU testing, eventually during daytime (weekend).
Meanwhile it might be to know whe, beside Wolf end me, is equiped (and
interested) in WOLF tests (in Europe).

73, Rik  ON7YD


At 17:37 19/03/01 +0000, you wrote:
>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
>
>