At 5/9/2006 12:57 PM, you wrote:
>I've been following this thread with interest, and have a couple of
>points which (of course) lead to more questions.
>The MASTRII RF strips are the same in the repeater chassis and the
>mobile rigs, band for band from low band to UHF. Flexibility and
>convenience options (and continuous duty PA issues) aside, why is a
>MII repeater station better used as a repeater than a MII mobile rig?
Shielding. The Mastr II mobile TX exciter sits right next to the RX LO
chain & couples into it. In many UHF applications this causes no problem
but in high RF environments the RX can "receive" IMD that isn't on channel,
but is a product of a strong off-frequency (~150 to 300 kHz) signal & a
harmonic of the TX fundamental oscillator.
Bob NO6B
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