Technology and Operations
This forum is for discussing technological & operational matters pertaining to U-boats.
RE: radio Transmitter \\\"Kurier\\\"
Posted by:
John R.
()
Date: November 29, 2000 01:39PM
Ah, something I DO have a little info about.....
\"Kurier\" was a high-speed transmission system. Nothing new or exotic, really, I think every nation had something like it. I know the US did.
Simply, the transmitting station would punch a tape with Morse (the tape punch incremented with each character, so sending speed during punching was a moot point) then said tape would be run through a mechanical keyer at speeds in excess of 100-200 words per minute. On the receiving end, a tape printer was hooked to the output of the receiver. This tape would come spitting out of the machine with the 200 WPM Morse printed on it, which would then be read (at a much slower speed) by the Op, who would transcibe it in plain-language (or cipher). This was known as \"reading slip\" and a good reader could read it at 50+ WPM.
There was a small version of the system that the OSS (and later, the CIA) had built for their little \"suitcase radios\". The idea being that the faster your agent (or U-Boat) could transmit it\'s traffic, the less time the \"Gentlemen from the Other Firm\" had to DF or Huff-Duff the transmission...The same principle is used today, although with computer programs instead of machines by Ham Radio operators for meteor scatter mode. It\'s now called HSCW, or High-Speed CW.
73,
John WB9OFG
\"Kurier\" was a high-speed transmission system. Nothing new or exotic, really, I think every nation had something like it. I know the US did.
Simply, the transmitting station would punch a tape with Morse (the tape punch incremented with each character, so sending speed during punching was a moot point) then said tape would be run through a mechanical keyer at speeds in excess of 100-200 words per minute. On the receiving end, a tape printer was hooked to the output of the receiver. This tape would come spitting out of the machine with the 200 WPM Morse printed on it, which would then be read (at a much slower speed) by the Op, who would transcibe it in plain-language (or cipher). This was known as \"reading slip\" and a good reader could read it at 50+ WPM.
There was a small version of the system that the OSS (and later, the CIA) had built for their little \"suitcase radios\". The idea being that the faster your agent (or U-Boat) could transmit it\'s traffic, the less time the \"Gentlemen from the Other Firm\" had to DF or Huff-Duff the transmission...The same principle is used today, although with computer programs instead of machines by Ham Radio operators for meteor scatter mode. It\'s now called HSCW, or High-Speed CW.
73,
John WB9OFG
Subject | Written By | Posted |
---|---|---|
radios | ron | 11/17/2000 04:41AM |
RE: radios | John R. | 11/22/2000 05:40PM |
RE: radios | Roy Prince | 11/23/2000 01:30AM |
RE: radios | Leif... | 11/23/2000 07:51AM |
RE: radios | Roy Prince | 11/27/2000 03:04AM |
Ok, thanks. (NT) | Leif... | 11/27/2000 10:38AM |
RE: radios | John R. | 11/27/2000 10:04PM |
RE: radios | Roy Prince | 11/28/2000 01:01AM |
RE: radios | JohnR. | 11/29/2000 01:43PM |
RE: radios | Roy Prince | 11/30/2000 12:27AM |
RE: radios | Ted Agar | 11/24/2000 07:32PM |
RE: radios | John R. | 11/28/2000 04:51PM |
RE: radios | Roy Prince | 11/29/2000 12:22AM |
RE: radio Transmitter \"Kurier\" | Ton den Boer | 11/28/2000 08:10PM |
RE: radio Transmitter \\\"Kurier\\\" | John R. | 11/29/2000 01:39PM |
RE: radio Transmitter \\\\\\\"Kurier\\\\\\\&q | Ton den Boer | 11/30/2000 07:40PM |