This list of RTTY stations contains over 1000 personal loggings by a few
dedicated individuals. No information in this list was copied from other lists.
Frequency is listed in kHz with L or U to indicate lower (normal) or upper
(reverse) sideband mode for normal copy. Frequencies are within 2 kHz.
Shift is rounded off to the nearest standard shifts of 85, 170, 425 or 850 Hz.
Speed is given in bauds rather than wpm. All stations in this list transmit
either standard "Baudot" or SITOR code. A letter following the baud means a
press station that sends in (E) English or (F) foreign language (at times). (M)
indicates a frequency division multiplex (FDM) transmission, usually carrying
AP/UPI news on one subcarrier.
See the addendum for description of the service abbreviations. It is sometimes difficult to distinguish between DIPLO and CRYPTO stations, since most are
probably ministry/embassy/govt stations. CRYPTO transmissions are usually 5
letter groups, sometimes 5 digit groups. Some of these stations bounce back and
forth between crypto and plain text. Some of the E. German stations are
switching to SITOR. The Prensa Minrex (PM) stations switch from Spanish to
gibberish (some form of encryption) not formed into groups. Synoptic weather
transmissions are often confused with crypto since they are in the form of
groups of characters, mostly numerals.
Most stations do not identify when sending traffic, but do when first coming on
the air to test. Some stations use the same call on many frequencies, while
others have a separate call for each.
There have been a few E. German MFA stations running 100 baud (132 wpm).
The Reagan administration has cut expenses by removing the HF National Weather
Bureau stations from service. These stations, known as WBR70, operated "L 850