Don´t forget the German HOSCHA switch.
I have a Hoscha 2000 switch that measures:
30 MHz 42 dB return loss, isolation 54 dB
145 MHz 35 dB return loss, isolation 41 dB
435 MHz 35 dB return loss, isolation 35 dB
Insertion loss 0.03 dB or better.
Will handle very high power and the cost is
around 200 dollars.
Does dow-key/Transco really have remote
rotary switches with that huge isolation.
The only Transco relay I know of with that
high isolation is their SPDT koax relay, well
it´s sort á SPDT really.
73 Jim SM2EKM
PS: Hoscha 2000 is 5 position remote motor driven switch.
Steve Katz wrote:
>The only remote antenna switches I know of that actually "work" at UHF are
>the Dow-Key/Transco types, which I've used with great success for many
>years. The "M" series products have 0.05dB attenuation and 100dB isolation
>at 100 MHz, but are rated to operate through 12.4GHz, and are available in
>SP3T through SP6T models, all Type N connectors, all completely
>weatherproof, with various actuator voltage ratings from 28Vdc through
>120Vac. They easily handle 1500W PEP, and are constant impedance through at
>least 3GHz. Although I buy mine surplus, they are still manufactured and
>readily available, pretty much "off the shelf" from Dow-Key, locally to me
>in Ventura, CA. http://www.dowkey.com
>73 de Steve, WB2WIK/6
>>At 10:21 8/9/2002 -0400, Mel Martin wrote:
>>>Does anyone know of a remote antenna switch that works at VHF/UHF?
>>The Ameritron RCS-8V is rated :
>>VSWR is less than 1.2 from DC to 250 MHz and less than 0.1 dB loss at 150
>>MHz - It handles 5 KW below 30 MHz and 1 KW at 150 MHz. The manual also
>>states "only a slight compromise in VSWR occurs at 450mhz.
>>The switch is also available as the RCS-8VN with N connectors.
>>73 Phil NA4M
>>-. .- ....- -- -. .- ....- -- -. .- ....- -- -. .- ....- -- -. .-
>>Phil Duff NA4M email@example.com Georgetown, Texas
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