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International Beacon Network

The beacons transmit every three minutes, day and night. This table gives the minute and second of the start of the first transmission within the hour for each beacon on each frequency. A transmission consists of the callsign of the beacon sent at 22 words per minute followed by four one-second dashes. The callsign and the first dash are sent at 100 watts. The remaining dashes are sent at 10 watts, 1 watt and 0.1 watts.

The actual starting time of each transmission is approximately twenty milliseconds after the nominal time due to the keying delay of the transmitter. Equipment used at each beacon site includes a Kenwood TS-50S transmitter, a Cushcraft R-5 vertical antenna, a

Official Web site for the International Beacon Network


Trimble Navigation Acutime™ GPS receiver and a controller built by the NCDXF. For more information, see The NCDXF/IARU International Beacon Network by John G. Troster and Robert S. Fabry, QST, October 1994 pp. 31-33 and November 1994 pp. 49-51, The NCDXF/IARU International Beacon Project by John G. Troster and Robert S. Fabry, QST, September 1997 pp. 47-48, or contact the Northern California DX Foundation, P.O. Box 1328, Los Altos, CA 94023-1328, USA.

Slot DX Entity Call 14.09920 18.10920 21.14920 24.92920 28.19920 Operator Status
1 United Nations 4U1UN 00:00 00:10 00:20 00:30 00:40 UNRC OK
2 Canada VE8AT 00:10 00:20 00:30 00:40 00:50 RAC Callsign to change
3 United States W6WX 00:20 00:30 00:40 00:50 01:00 NCDXF OK
4 Hawaii KH6WO 00:30 00:40 00:50 01:00 01:10 NOARG, HARC No output on 18 and 24 MHz
5 New Zealand ZL6B 00:40 00:50 01:00 01:10 01:20 NZART OK
6 Australia VK6RBP 00:50 01:00 01:10 01:20 01:30 WIA OK
7 Japan JA2IGY 01:00 01:10 01:20 01:30 01:40 JARL OK
8 Russia RR9O 01:10 01:20 01:30 01:40 01:50 SRR OK
9 Hong Kong VR2HK 01:20 01:30 01:40 01:50 02:00 CRSA, HARTS Off air
10 Sri Lanka 4S7B 01:30 01:40 01:50 02:00 02:10 RSSL Off air
11 South Africa ZS6DN 01:40 01:50 02:00 02:10 02:20 ZS6DN OK
12 Kenya 5Z4B 01:50 02:00 02:10 02:20 02:30 ARSK OK
13 Israel 4X6TU 02:00 02:10 02:20 02:30 02:40 IARC OK
14 Finland OH2B 02:10 02:20 02:30 02:40 02:50 SRAL OK
15 Madeira CS3B 02:20 02:30 02:40 02:50 00:00 ARRM Sometimes garbled
16 Argentina LU4AA 02:30 02:40 02:50 00:00 00:10 RCA OK
17 Peru OA4B 02:40 02:50 00:00 00:10 00:20 RCP Off air
18 Venezuela YV5B 02:50 00:00 00:10 00:20 00:30 RCV OK



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