[time-nuts] Rohde & Schwarz XKE2 Standard frequency receiver
alan.melia at btinternet.com
Fri Nov 6 21:14:23 UTC 2009
Hi Hubert I have an XKD which I am guessing is the same as yours but mine is
tuned for BBC Droitwich on 200kHz (now moved in the early 1990s to 198kHz).
I have been unable to find a manual or circuit anywhere. The radio side
seems fairly straightforward with 4 tuned amplifier stages, but I have not
worked out the phase detector circuit. The divider in the box is just a set
of 7490s decade stages in my unit, swiched as required, to provide a signal
for the phase detector. If yours is for 77.5kHz DCF77 it will be probably
quite different in this area. If you find any information on the circuit I
would be interested too even for the XKE.
I have used mine with a wire aerial to plot the phase of Droitwich against a
local Austron 1250a standard.
----- Original Message -----
From: "v. Bonhorst" <hbonhorst at freenet.de>
To: "'Discussion of precise time and frequency measurement'"
<time-nuts at febo.com>
Sent: Friday, November 06, 2009 8:48 PM
Subject: [time-nuts] Rohde & Schwarz XKE2 Standard frequency receiver
> I try to repair a XKE2 and there are two missing diagrams in my paper
> manual. Exactly these are needed for repair.
> Diagram for filter board and diagram for antenna .
> Might be someone can scan these diagrams and help me.
> Thank you in advance.
> Best regards,
> time-nuts mailing list -- time-nuts at febo.com
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