Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- en:etk-r_55 [2024/01/14 19:06] – mb
+++ en:etk-r_55 [2024/01/14 19:06] (aktuell) – mb
@@ Zeile 9: / Zeile 9: @@
 Only with the succeeding set, the [[KFF-58|Krypto - Funkfernschreiber 58]] with its automatic synchronisation, the Swiss Army finally got one of the world's best radio teletypewriters with real-time encryption.
 {{:images:gretag-etk-r55.jpg?direct&600|ETK R-55}}
 ===== Technical data =====
@@ Zeile 27: / Zeile 28: @@
 The **ETK-R 55** consists of a transport case with an integrated amplifier and, this is special for the ETK-R 55 model, the electronics for amplifying and filtering the signal and the actual teletypewriter.
-The amplifier in the transport case is connected to the receiver's AF output and the transmitter's microphone phony input. A thick multipole cable connects the amplifier / modem to the teletypewriter.\\
+The amplifier in the transport case is connected to the receiver's AF output and the transmitter's microphone phony input. A thick multipole cable connects the amplifier / modem to the teletypewriter.
 {{:images:gretag-etk-r55-geschl.jpg?direct&330|ETK R-55}}
 The modem section in the ETK-R was fundamentally revised and optimised with better filtering for radio teletype connections.\\
 Operation modes can be used with single-tone telegraphy 1500 Hz ("Radio ETT" setting) or frequency shift keying with space frequency 1245 Hz, mark frequency 1155 Hz ("Radio normal" mode). In addition to the normal "radio" mode, the "radio fading" mode was introduced; a second detector is used to transmit and analyse not only the fundamental frequencies 1255/1145 Hz, but also the first harmonic 2510/2290 Hz, with the stronger signal being fed to the ETK teleprinter.
 {{:images:gretag-etk-r55-elektronik.jpg?direct&330|ETK R-55: Modem}} {{:images:gretag-etk-r55-elektronik-inside.jpg?direct&330|ETK R-55: Interior view}}