Mine has "SP1" stenciled on it. It shows a pass and notch frequency for
each side in the 456/451Mhz range, so I assumed it was a BP/BR
duplexer. The label calls it a "Diplexer", but the inputs are marked ANT,
RX and TX.
Joe
At 01:22 PM 1/2/2005, you wrote:
>The SP300 marking on my unit suggests that it was not a standard
>production item, and may account for the lack of available information
>on it. The photo in the link you provided seems to show a faint "SP"
>after the model number... true?
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