DL9LBG WSPR transmitter
July 23rd: DL9LBG is not whispering today - sometimes I prefer man made cw operation.
This webserver and the WSPR transmitter (weak signals propagation reporter) both work on a Raspberry Pi mini computer located in Lütjenburg/North Germany (Locator JO54hh).
Currently DL9LBG whispers on 28.126178 MHz (10 m band) with a tx fraction of 20 % (transmitting approx. every 12 minutes).
The WSPR software by K1JT is running on a Raspberry Pi which is connected via a cheap USB audio dongle to an FT-857D which produces about 2 watts (33 dBm) hf output. The antenna is a simple dual band ground plane (10 and 15 m) made of some wire and a trap on a fishing rod mounted on the balcony.
WSPR transmitter plus webserver on one mini computer and the power input is only 3.5 watts. Good power efficiency, I think.
Pse QSL to michael [ät] dl9lbg.de - tnx!
SWL reports will be confirmed via QSL bureau, eQSL or QRZ.com postal address.
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