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HB9ABX > TEST 04.09.22 17:13l 30 Lines 1303 Bytes #999 (999) @ WW
BID : 49WDB0FHN02V
Read: GUEST
Subj: Test Test RBN
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Sent: 220904/1510z @:DB0FHN.#BAY.DEU.EU [JN59NK Nuernberg] obcm1.07b12 LT:999
From: HB9ABX @ DB0FHN.#BAY.DEU.EU (Felix)
To: TEST @ WW
Reply-To: HB9ABX @ HB9EAS.CHE.EU
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Beacons serve to indicate the band conditions through the signal strength
received from many
different parts of the word.
Generally, beacons are automatic transmitting stations on fix frequencies,
mostly in CW. By
listening on these frequencies, one detects the actual band conditions. As
example, the NCDXF
Beacon Network, which operates worldwide 18 different stations that transmit
every 3 minutes on
the same frequency. E.g. By listening on 14.100 Mhz one note the band
conditions on 20m.
The RBN (Reverse Beacon Network) works just in the opposite way.
Instead of operating a number of transmitting stations, a number of automatic
receiving stations are
used to monitor the CW stations on several bands. They receive a broad
bandwidth, decode the
heard stations and communicate the heard call signs over the Internet to a
central point.
An intelligent software allows to decode the callsigns, measure the signal
strength, and filter the
received data. This way, very conclusive information about band conditions is
obtained. The
automatic receiver stations are called Skimmer, and consist of an SDR receiver,
an intelligent
software and the required Internet connection.
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