[SBE] Question about an FM translator cavity filter --

Mike Langner mlangner at swcp.com
Mon Jun 2 21:57:19 EDT 2008


Hello all !

I am working on improving the performance of an FM Broadcast Translator that
is using a Remec Wacom BPBR filter in its output.

The three cavity filter is model WP-715D-3, it is serial number 4515. It is
set to pass 95.8 - 96.0, and to reject 95.4 - 95.6.

The translator receives on 95.5; it transmits on 95.9. (Ouch ! Close
spacing!)

The filter exhibits about 6 to 7 dB loss on-channel.

Would anyone have catalogue info or a data sheet on this item? I sent an
email to the manufacturer (sales at txrx.com) which was the only email address
I could find, and have received no answer after a week or so. I understand
that TXRX is the successor-in-interest to Wacom, but perhaps I am mistaken
and someone can correct me.

Could some kind person please tell me if what I'm experiencing (waaaaay more
on-channel loss than I'd like) is what I should expect from this unit?

Thanks very, very much !

Mike Langner, CPBE
Albuquerque, NM


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