HFDL Resources

If you’ve watched my recent video on decoding High Frequency Data Link signals (HFDL), then this is the page you’ll find some of of the resources.

Click here for the map of HFDL Ground Stations shown in the video.

Frequencies

The following simple table lists the frequencies used by the entire HFDL network. With a reasonable antenna (even like my home-made dipole made from scrap parts) you will probably be able to receive multiple ground stations.

The frequencies below are from the current HFDL System Table 51.

San Francisco, California, USA – GS 1 HFDL frequencies

Frequency (kHz)	Timeslot
5508	TS 4
6559	TS 8
8927	TS 12
10081	TS 4
11327	TS 4
13276	TS 8
17919	TS 12
21934	TS 4

Molokai, Hawaii, USA – GS 2 HFDL frequencies

Frequency (kHz)	Timeslot
5514	TS 7
6565	TS 7
8912	TS 0
8936	TS 0
10027	TS 11
11312	TS 11
11348	TS 11
13276	TS 3
13312	TS 3
13324	TS 3
17919	TS 7
21937	TS 0

Reykjavik, Iceland – GS 3 HFDL frequencies

Frequency (kHz)	Timeslot
3900	TS 3
5720	TS 7
6712	TS 11
8977	TS 0
11184	TS 3
15025	TS 7
17985	TS 11

Riverhead, New York, USA – GS 4 HFDL frequencies

Frequency (kHz)	Timeslot
5652	TS 1
6661	TS 5
8912	TS 9
11387	TS 1
13276	TS 5
17919	TS 9
21931	TS 1

Auckland, New Zealand – GS 5 HFDL frequencies

Frequency (kHz)	Timeslot
5583	TS 4
6535	TS 8
8921	TS 12
10084	TS 4
13351	TS 8
17916	TS 12

Hat Yai, Thailand – GS 6 HFDL frequencies

Frequency (kHz)	Timeslot
5655	TS 10
6535	TS 2
8825	TS 6
10066	TS 10
13270	TS 2
17928	TS 6
21949	TS 10

Shannon, Ireland – GS 7 HFDL frequencies

Frequency (kHz)	Timeslot
2998	TS 6
3455	TS 6
5547	TS 2
6532	TS 10
8843	TS 6
8942	TS 6
10081	TS 2
11384	TS 2

Johannesburg, South Africa – GS 8 HFDL frequencies

Frequency (kHz)	Timeslot
3016	TS 6
4681	TS 6
5529	TS 10
8834	TS 6
11321	TS 10
13321	TS 2
17922	TS 6
21949	TS 10

Barrow, Alaska, USA – GS 9 HFDL frequencies

Frequency (kHz)	Timeslot
2944	TS 10
2992	TS 10
3007	TS 10
3497	TS 10
4654	TS 2
4687	TS 2
5529	TS 2
5538	TS 2
5544	TS 2
6646	TS 6
8927	TS 10
8936	TS 10
10027	TS 2
10093	TS 2
11354	TS 2
17919	TS 6
17934	TS 6
21928	TS 10
21937	TS 10

Muan, South Korea – GS 10 HFDL frequencies

Frequency (kHz)	Timeslot
2941	TS 7
5502	TS 3
6619	TS 7
8939	TS 11
10060	TS 3
13342	TS 7
17958	TS 11
21931	TS 3

Albrook, Panama – GS 11 HFDL frequencies

Frequency (kHz)	Timeslot
5589	TS 10
6589	TS 2
8894	TS 6
10063	TS 10
13264	TS 2
17901	TS 6

Santa Cruz, Bolivia – GS 13 HFDL frequencies

Frequency (kHz)	Timeslot
4660	TS 3
6628	TS 7
8957	TS 11
11318	TS 3
13315	TS 7
17916	TS 11
21997	TS 3

Krasnoyarsk, Russia – GS 14 HFDL frequencies

Frequency (kHz)	Timeslot
5622	TS 4
6596	TS 8
8886	TS 12
10087	TS 4
13321	TS 8
17912	TS 12
21990	TS 4

Al Muharraq – GS 15 HFDL frequencies

Frequency (kHz)	Timeslot
5544	TS 5
8885	TS 9
10075	TS 1
13354	TS 5
17967	TS 9
21982	TS 1

Agana, Guam – GS 16 HFDL frequencies

Frequency (kHz)	Timeslot
5451	TS 9
6652	TS 1
8927	TS 5
11306	TS 1
13312	TS 5
17919	TS 9
21928	TS 1

Gran Cararias, Spain – GS 17 HFDL frequencies

Frequency (kHz)	Timeslot
6529	TS 8
8948	TS 12
11348	TS 4
13303	TS 8
17928	TS 12
21955	TS 4

Ground Station Map

The simple HFDL Ground Station map shown in the video is shown below.
If I get the chance, I’ll update this with a zoomable Google Maps version.

Right-click and ‘open in new tab’ to see or save a full HD version.

Decoding HFDL Video