RDL

RDL is a Russian military strategic broadcast. It can be heard on VLF and numerous HF frequencies.

The broadcast carries FSK-modulated Morse code and 50 Bd T-600 data, using the shift of 250 Hz on HF or 75 Hz on VLF. Morse messages include:

"RDL RDL RDL" followed by two 5-digit groups repeated three times, followed by "K".
"RDL RDL RDL" followed by 5-digit single groups. The first group is often 11111 or 22222, while the last group is the day of the month (first 2 digits) and the group count (last 3 digits). The message ends with "K".
"Monolith" messages, usually addressed to XHOP or RDL. The signals for XHOP on this network are repeated after the same signal in the XHOP network with the addition of an additional identification group. The signals for the RDL, in turn, are repeated from the VD9B network, also with the addition of an additional identification group.

2023

The following is a non-exhaustive list of RDL frequencies, most of which are active simultaneously.

18.1 kHz
3244 kHz
3792 kHz
3861 kHz
4445 kHz
4818 kHz
5268 kHz
5438 kHz
6342 kHz
7760 kHz
7816 kHz
8136 kHz
10535 kHz
10766 kHz
11468 kHz
12832 kHz
14411 kHz
14664 kHz
16112 kHz
17452 kHz
17460 kHz
19210 kHz
20268 kHz
22864 kHz

This station appears to have a strong connection to the XHOP network, with XHOP messages being relayed on RDL's frequencies using FSK-CW. XHOP messages using RDL frequencies will not be logged here.