You only need about 40 dB isolation running 1 kW output, as any receiver
I've ever seen can handle 100mW (+20 dBm) directly into the antenna port.
However, the B&W switches I've used in the past did not have a lot of
isolation, and it gets worse on the higher frequencies. I can test one for
you in about 60 seconds, at any frequency you'd like, but I don't have one
here to play with at the moment.
The Alpha-Delta switches have substantially more isolation than any of the
B&W units I've worked with, and (A-D) typically measure >50 dB isolation at
30 MHz.
WB2WIK/6
"If everything seems under control, you're just not going fast enough." -
Mario Andretti
> -----Original Message-----
> From: Pete Smith [SMTP:n4zr@contesting.com]
> Sent: Tuesday, December 03, 2002 7:17 AM
> To: towertalk@contesting.com
> Subject: [Towertalk] B&W - It just ain't the same
>
> I just had an unpleasant experience on the phone with B&W. I was looking
> for the isolation spec on a B&W 594 coax transfer switch. Once the guy
> realized I didn't want one of their high-priced current antenna models, he
>
> couldn't have been less interested. I wouldn't even have minded the
> outcome, if the guy had been a little more sympathetic, but the bottom
> line
> was "go away."
>
> Anyone out there got a manual for one of these switches, or any idea where
>
> I might find one? My thought is to use it to swap either of my two radios
>
> to one of two sets of antennas. However, one station runs 100 watts, the
> other 1KW, and I'm leery of there being too much coupling between the two
> radios. Unfortunately, I don't have the test equipment to determine it
> experimentally.
>
> 73, Pete N4ZR
> Sometimes a tower is just a tower
>
>
>
>
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