[Premium-Rx] 200kHz Filter WANTED & H-2550 Receiver Info WANTED

[Pat1McA at aol.com]

Greetings to all PR List members,
 
A pair of longshot requests :
 
1. I am looking for a 200kHz centre frequency, 5 or 6kHz  Bandwidth, 
mechanical or crystal filter.
 
Collins made one, type 200Y-60  P/N 526-9487-000. Also  AEG/Telefunken and 
maybe RFT?
 
This is for a re-design project on the AEG DE1710 Demodulator.
 
2. Also looking for any repair information in the way of  
Service/Maintenance Handbooks or CD service info on the  Marconi/Selenia H-2550 DSP HF 
Receiver which was used as part of the  RN  ICS4 system .
 
If you do not ask you do not get!
 
Many thanks, please reply off-list
 
73 de Pat G3YFK