TDD7200A is a Motorola part number. This duplexer is an option rather than
a catalog item. Call Motorola Parts ID at 800-422-4210, and ask what this
number crosses to in the Decibel Products catalog. Once you have the DP
part number, contact DP Tech Support for assistance.
If you don't get good answers, try making up jumpers that are two inches
longer than the existing ones. Don't touch the loops until you have scoped
the duplexer on a network analyzer (or a spectrum analyzer with an RLB) to
see that the performance is about the same as in the original band.
73, Eric Lemmon WB6FLY
ka9fer wrote:
> Does anyone have any info on Decibel Products duplexer model #
> tdd7200a-c?
> This is a six can pass reject device that was on the 155 MHz area. Does
> this need to have the loops changed or the jumpers between the cans
> lengthened to be optimized for better isolation between rx/tx?
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