13-02-2019, 11:27 AM
(This post was last modified: 13-02-2019, 11:39 AM by Geordie McBoyne.)
Found an article in the March/April 2002 GFGF bulletin about the synchronous detector employed in the Korting Royal Syntektor 55 FM radio receiver. In this receiver an ECH81 performs the function as the synchonous detector.
The IF is the usual 10.7Mhz and the oscillator in the Syntektor operates in a Meissner circuit at 2.14Mhz +/-30Khz. Corresponds to 1/5 of the IF.
Reading though the text it appears that the syntektor function is to achieve optimum selectivity (trennscharfe)
Through the Synchro-Detektor-Switching alone a selectivity improvement of 1:100 to 1:1000 can be achieved.
Geordie McBoyne.
The IF is the usual 10.7Mhz and the oscillator in the Syntektor operates in a Meissner circuit at 2.14Mhz +/-30Khz. Corresponds to 1/5 of the IF.
Reading though the text it appears that the syntektor function is to achieve optimum selectivity (trennscharfe)
Through the Synchro-Detektor-Switching alone a selectivity improvement of 1:100 to 1:1000 can be achieved.
Geordie McBoyne.
