ARLA/CLUSTER: Mais uma radio-baliza na plataforma "Next Generation Beacons "

[João Costa > CT1FBF]

OZ7IGY - 10 GHz beacon now on Next Generation Beacons platform

Today the 10 GHz OZ7IGY beacon has been migrated to the Next
Generation Beacons platform http://www.rudius.net/oz2m/ngnb

The 10 GHz beacon is now frequency and time locked to GPS.
The sequence is timed to start at 00 second sending PI4 followed by a
short pause then CW ID sending call sign and locator, then pause and
carrier until next cycle. The nominal frequency remains the same, i.e.
10368,930 MHz.

To decode PI4 tune your receiver to 800 Hz below the nominal
frequency, just like you do when you want to decode a normal CW signal
at 800 Hz. On most radios this is a USB dial of 10.368.929.020.

The output power is 10 W directly into a 9 dB slotted wave guide antenna.

PI4 is a digital modulation (MGM) specifically designed with beacons
and propagation studies in mind.

PI4 decoder download: http://www.rudius.net/oz2m/software/pi-rx

PI4 encoding examples in Arduino C, Atmel C, Delphi Pascal, Microsoft
Visual Basic and Microsoft C++:
http://www.rudius.net/oz2m/ngnb/software.htm

PI4 online encoding and frequency calculation:
http://www.rudius.net/oz2m/ngnb/pi4encoding.php

PI4 specification: http://www.rudius.net/oz2m/ngnb/pi4.htm
PI4 is a cousin of JT4, JT9 and WSPR.

OZ7IGY homepage: http://www.oz7igy.dk

73

Bo, OZ2M