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ETM-1800
HF radio modem with FEC - this page is a stub

ETM-1800 is a high-end HF radio modem with error-correcting features like Forward Error Correction (FEC) and echo-cancelling, developed in the early 1980s by AEG Telefunken in Ulm (Germany). The device was mainly intended for use by the German Armed Forces and by NATO.

The device is housed in a 3U 19" rackmount enclosure, as shown in the image on the right. It has several controls for setting the baudrate and selecting the desired transmission protocol, plus a LED-bar that shows the signal quality. Several LEDs are available to show the current status.   

The layout of the front panel is in the same style as that of the E-1800 receiver, which was part of the same family of devices. In the FARCOS communications system, they were mounted in the same 19" rack. The ETM-1800 was succeeded in 1984 by the 1U high ETM-1810 and ETM-1820.

NOT IN COLLECTION — Crypto Museum does not have an ETM-1800 in its collection, and does not have additional information about it at present. This page only acts as a placeholder. For further infomation about this series of modems and its protocols, please refer to our pages out its successors ETM-1810 and ETM-1820.
Front panel of the ETM-1800 [1]
Jim Meyer with a double FARCOS installation in the former Telefunken Museum in Ulm in 2015 [1]
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Front panel of the ETM-1800 [1]
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Jim Meyer with a double FARCOS installation in the former Telefunken Museum in Ulm in 2015 [1]

References
  1. Helmut 'Jim' Meyer, HS0ZHK, My way to Ham - Radio and beyond
    Website QRZ.COM. Personal correspondence. March 2018.
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© Crypto Museum. Created: Monday 26 March 2018. Last changed: Thursday, 03 April 2025 - 09:12 CET.
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