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
|
