Sorry for this, but do any one
have or now where to get
E-prom/software and a 1.4 MHz LSB
filter for a MARCONI Ocean Link 400
The Crystal filter for USB is marked with type BP4727-30 from
Cathodeon England
Can't help with these specific items but 1.4MHz filters for other sets
sometimes appear on Ebay, and are generally quite a bit cheaper than 455 KHz
equivalents.
Examples to watch out for are the Redifon 551, Racal 1772 series, some
other Marconis, etc.
They may not be an exact fit, perhaps not quite the same bandwidth
either, but might save waiting a long time for just the right item to come
along.
regards
Nigel
G8PZR
