[Premium-Rx] PREMIER RECEIVER CATHODEON FILTERS

[Pat1McA at aol.com]

Hello Errico,

The Cathodeon BP4600-01 and BP4706-10 are both 50 ohms terminating impedance.

These filters are no longer manufactured since  around 1982.

I think that new surplus filters (which are 50 ohms) made by CRYSTAL 
ELECTRONICS are still available from   dave at quartslab.com   at about £10 each plus 
postage.

The Part Numbers are as follows:-

USB    1.4MHz C/F    2.35kHz  BW    F00056   OP10235M

LSB     1.4MHz C/F    2.35kHz  BW    F00055   OP9564M

I use these filters in my modified R&S EK070 and they will work in the EK071 
model but you may have to do other modifications to get the LSB to work 
depending on your receiver software version.

It is possible that Dave may also have the wider bandwidth 2.75kHz filters as 
well . I remember the 2.75kHz USB one was F00054 OP5725M but I cannot recall 
the LSB number.

Hope this helps,

Best regards,

Pat  G3YFK   
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