[TowerTalk] Remote switch
Wes
wes_n7ws at triconet.org
Sat Oct 26 09:57:01 EDT 2019
You need to read further. "This 4positionantenna switch can be used for 46 to 75
ohm systems, plus handle 2000 watts SSB, 1500 watts CW.(Tested for extended
periods with ACOM1500-power amplifier) " I have a KPA500 so for me this is not
an issue.
With one exception, I'm not so concerned with the connectors since they're
usually connected to once and left alone. The concern I have is that the
connectors seem to be pretty close to each other and my main coax is 7/8" Heliax
and once that is attached I'm not sure the adjacent connector is going to be usable.
Wes
On 10/26/2019 3:38 AM, Rob Atkinson wrote:
> https://www.ebay.com/itm/MS-S4A-WEB-controlled-REMOTE-ANTENNA-SWITCH-4-POSITIONS-2-KW-PEP-Ready-for-use/202778787695?hash=item2f368ebf6f:g:ec4AAOSwmxVceS5L
>
> I'd find something else. Two red flags: Power rating is in PEP.
> That usually means it's a cheap hammy radio item. Look for a power
> rating given in 100% duty cycle CCS. I'd take a switch rated for 1 KW
> 100% duty cycle continuous commercial service in a second over
> anything rated for PEP, unless the PEP power spec. is up around 5 KW.
> But even then you don't have a transmit time frame. Most ham radio
> switches have tiny contact surfaces. Not good.
>
> The other problem I see is the UHF jacks. They're those awful jobs
> with the nut that threads down on the jack threads to hold the jack in
> place. Those things are nothing but trouble because they eventually
> come loose and the whole jack twists around. The nut is a flimsy thin
> ring that's hard to get to in a cluster of jacks -- you have to have a
> deep socket and crank it down but it will loosen up eventually.
> Always look for the square flange panel jacks held by two or more nuts
> and bolts. They won't twist on you. Only accept Amphenol, not
> off-shore knockoffs.
>
> 73
> Rob
> K5UJ
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