Pictures of B-515 show an HF whip antenna precariously mounted on a mast.
HF can be used for voice/morse or teletype but is a very high powered, omni-directional (easily detected) signal.
Soviet submarines used a VLF receiver system similar to NATO boats. Think of it as a news organization's wire broadcasts where anybody tuned into the right frequency, and possessing the appropriate decryption gear, can read the broadcast.
That aft mast looks like a VHF and/or UHF antenna. Standard comms for the period and even today. Everything from satellite to teletype and voice.
Not being an expert on Soviet era communications though, I'm certainly correctable on this.
__________________
In the month of July of the year 1348, between the feasts of St. Benedict and of St. Swithin,
a strange thing came upon England...
My U297 build thread
|