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Copyright 2010 Fred Cunningham K1FC 1
REVERSE BEACONINGand
WSPR
Copyright 2010 Fred Cunningham K1FC 2
Why Reverse beaconing
– Real time monitoring propagation– Find out where you are being heard– Compare antennas or equipment
Copyright 2010 Fred Cunningham K1FC 3
What is a reverse beacon
• A reverse beacon is a receiver feeding a computer connected to a reverse beacon network.– Anyone can run a reverse beacon, including a
non ham.– Each network requires its own special
software
Copyright 2010 Fred Cunningham K1FC 4
REVERSE BEACON NETWORKS
• Pskreporter.info
• PropNET.org
• Reversebeacon.net
Copyright 2010 Fred Cunningham K1FC 5
PSK Reporter
• Receives your transmitted callsign and reports it to Pskreporter.info
• Pskreporter.info displays where received in near real time.
• Works with various digital modes including cw
Copyright 2010 Fred Cunningham K1FC 6
PSK REPORTER MAP
Copyright 2010 Fred Cunningham K1FC 7
Copyright 2010 Fred Cunningham K1FC 8
Copyright 2010 Fred Cunningham K1FC 9
Copyright 2010 Fred Cunningham K1FC 10
Implementing PSK Reporter
• Fldigi 3.2. and some other digital programs have PSK reporter built in. Check the Pskreporter site for more info.– To turn it on in Fldigi go to Configure-Rig
Control-Misc and check autospotting. – Be sure you have entered all 8 figures for
your sub-square.– If you are using the computer for rig control
you can also report frequency.
Copyright 2010 Fred Cunningham K1FC 11
PropNETpsk
• PropNETpsk free program– Automatically monitor up to 16 blocks of
frequencies that you define– Automatically send reports to PropNET.org
• Can also be set to beacon 6 to 15 times/hr– Will not beacon on an occupied frequency
• Can be used in QSO mode – Will alert if it detects your call
Copyright 2010 Fred Cunningham K1FC 12
PropNET Screen
Copyright 2010 Fred Cunningham K1FC 13
PropNET Map
Copyright 2010 Fred Cunningham K1FC 14
Reversebeacon
• Primarily for cw
• Uses the program Aggregator to extract information from CW Skimmer
•
Copyright 2010 Fred Cunningham K1FC 15
CW RECEIVING SOFTWARE
• CW Skimmer – Used with a SDR can decode up to 700
signals at once. – With an analog receiver can decode about 24
signals at a time– There is a 30 day free trial and a $75
activation fee.– It can be run with Aggregator to report to
reversebeacon.net• Download from reversebeacon.net
Copyright 2010 Fred Cunningham K1FC 16
CW SKIMMER 3kHz
Copyright 2010 Fred Cunningham K1FC 17
SOFTROCK
Copyright 2010 Fred Cunningham K1FC 18
RAW Output
Copyright 2010 Fred Cunningham K1FC 19
FILTERED FROM 1 LAND
Copyright 2010 Fred Cunningham K1FC 20
REVERSE BEACON MAP
Copyright 2010 Fred Cunningham K1FC 21
WSPR
• A method of measuring propagation worldwide with a system of beacons and special software.– Not suitable for QSO’s
• Reports to wsprnet.org
• A good overview can be found at g4ilo.com/wspr.html
Copyright 2010 Fred Cunningham K1FC 22
WSPR MAP
Copyright 2010 Fred Cunningham K1FC 23
How WSPR Works
• Weak Signal Propagation Reporter• Mode is MEPT-JT Manned Experimental
Propagation Transmitter – Joe Taylor• Low speed FSK about 6 Hz bandwidth in a 200
Hz band window.• Each transmission just under 2 minutes.• Time synced within 1 sec. Starts on even
minutes. – Data is callsign , 6 character locator, power in dBm (1
watt is 30dBm)– Can be run in receive mode only.– Can decode signals below the noise.
Copyright 2010 Fred Cunningham K1FC 24
WSPR RECEIVING SOFTWARE
• /www.physics.princeton.edu/pulsar/K1JT/wspr.html
• WSPR 2.11 plus FMT – FMT is from the ARRL to very precisely
measure frequency.