At 4/19/2004 04:48 PM, you wrote:
>At 07:35 PM 4/19/2004 -0400, you wrote:
> >
> >>.35 uv sensitivity is kinda "iffy" in my book.
> >
> >0.35uV is the rated sensitivity of most Mastr II
> >repeaters (UHF anyway) WITHOUT a preamp. 0.20 with
> >the preamp (info from the manual).
>
>
><---Granted. And it STILL sucks :-) State of the art being what it is and
>with duplexer loses figured in, that should be considered a totally
>unacceptable spec for anything other than perhaps a temporary or portable
>repeater.
>
>Ken
...or perhaps a 2 meter repeater in SoCal. Here in the Los Angeles basin,
I've measured antenna noise levels at around -123 dBm in a 16 kHz
bandwidth, or 2270� K. A 0.30 �V for 12 dB SINAD receiver's equivalent
input noise temperature is going to be somewhere near that value.
I typically do not recommend preamps on receivers that make 0.30 �V or less
on 2 meters. Usually the best G.E. Mastr II/Exec II/MVP receivers make it
down to that.
Bob NO6B
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