Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- en:boatanchors_von_collins [2021/04/07 11:41] – angelegt mb
+++ en:boatanchors_von_collins [2021/04/07 11:41] (aktuell) – mb
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 ====== Tube-equipped receivers from Collins ======
-[[Collins|{ :logo:collins-logo.gif?direct&150|Collins Logo}}] In 1932, radio amateur Arthur A. Collins founded his own company [[Collins Radio Company]] in Cedar Rapids, initially manufacturing amateur radio transmitters. In the following years, [[Collins]] got an excellent reputation in the commercial and, above all, aeronautical communications sector. Based on the receivers and transmitters manufactured during the Second World War, amateur radio receivers (the 75-A series) were first available from [[Collins]] in 1946.
+[[Collins|{{ :logo:collins-logo.gif?direct&150|Collins Logo}}]] In 1932, radio amateur Arthur A. Collins founded his own company [[Collins Radio Company]] in Cedar Rapids, initially manufacturing amateur radio transmitters. In the following years, [[Collins]] got an excellent reputation in the commercial and, above all, aeronautical communications sector. Based on the receivers and transmitters manufactured during the Second World War, amateur radio receivers (the 75-A series) were first available from [[Collins]] in 1946.
 Communications receivers with continuous shortwave coverage not limited to the amateur radio bands were produced after 1949, based on the model 51J-1. The receivers covered the frequency range from 500 kHz to 30.5 MHz in 1 MHz bands, the linear frequency response allowed a dial reading accuracy of 1 KHz that had never been achieved before. The heavy black receivers became famous with the successor model 51J-3 (military version R-388), equipped with coil filters and manufactured from 1952, and with the [[51J-4]] (military version R-388A), only this receiver, available from 1957, was equipped with the legendary mechanical Collins filters.