Forty-second edition of the N&O column / Spooks newsletter

(Date: Fri, 02 Nov 2001 21:29:47 +0100)

Voice stations | Morse stations | Other modes
HAARP | Scrambled comms | Propagation logger
Jammer frenzy | Intelligence news | Logs
Index | NS NL Home


Scrambled comms

More and more voice transmissions are scrambled these days. Voice encryption systems or vocoders can be heard on many frequencies and are used by the military, diplo stations and fishermen, to name just a few. A quick scan resulted in these frequencies and this is only the top of the iceberg.
2408 2556 2278 2320 2740.5 2975 2980 3000 3110 3112.5 3410 3416 3420 3428 3440 3460 3470 3480 3500 4024 4065 4103 4122 4519 4749 5329 5497 6680 6697 7060 8868 8899 11229 14440 25350

ANDVT (Advanced Narrowband Digital Voice Terminal) proved to be one of the most popular encryption methods during the past years. A widely used ANDVT system is KY-99, which is a secure voice and data communications system. In narrowband mode it supports the following data rates:
300, 600, 1200, 2400 bps in HF digital mode. In wideband mode: 12 and 16 kbps.

Other sophisticated systems that you can hear on HF include KG-84A (data encryption) and KG-84C (telegraphy encryption), KY-5, KY57/58, Y-99 and KY-100. Sailor 2000, an integrated GMDSS system, is often used by fishermen.

You can find sound samples of a number of voice encryption systems on Leif Dehio's excellent website.


Voice stations | Morse stations | Other modes
HAARP | Scrambled comms | Propagation logger
Jammer frenzy | Intelligence news | Logs
Index | NS NL Home

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