Eric Lemmon wrote:
>For those who may not have the Wacom catalog handy, the WP-643 duplexer
>comprises six 8" cavities that are rated at 102 dB isolation at 600 kHz
>spacing, with 2.2 dB insertion loss. Four of the cavities are BpBr, and two
>are
>bandpass only. The WP-639 duplexer comprises four 5" BpBr cavities that are
>rated at 80 dB isolation at 600 kHz spacing, with 1.5 dB insertion loss.
>Needless to say, the WP-643 is vastly superior to the WP-639 at 2m spacing.
>
>You could use two of the WP-639 cavities for bandpass application, if you
>replaced the single BpBr coupling loop with two Bp loops on each cavity. Try
>the WP-643 in stock form first.
>
I totally agree with Eric's suggestions.
Kevin
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