[Elecraft] Elecraft] Coax Switches for KPA1500

[Bob McGraw K4TAX]

One option in my thinking is to use the coax switch on the input of the 
KPA1500.  Then one can switch between the K3 and K2/100 and not need a 
high power switch.  The KPA1500 in standby is then in bypass mode and 
one doesn't have concerns about switching high power.

Oh what the heck do I know.   I only run a KPA500 with switching between 
two radios to the input.  Also have PTT interfaced accordingly.

73

Bob, K4TAX


On 7/21/2018 4:52 PM, john at kk9a.com wrote:
> I have had a Daiwa two position switch for decades. It is not part of my
> permanent setup however I have used it on many occasions running legal limit
> on HF without issue. It appears to be a well made switch. If they did not
> discontinue the four position one I would have purchased one for a
> DXpedition. Power ratings are frequency related, your switch is rated up to
> 600MHz and perhaps the UHF connectors are the limiting factor. At what
> frequency is it rated for 1KW CW? You did not specify what  bands you
> operate, if you want the best manual coax switch look at a Bird.
>
> John KK9A
>
>
> Elecraft] Coax Switches for KPA1500
> Dauer, Edward edauer at law.du.edu
>
> What sort of mechanical coax switches are available for 1500 watts
> continuous power?
>
> The one item I haven't yet upgraded since putting the KPA1500 amp in place
> was a two-position coax switch.  I have the K3/KPA1500 on one side and a
> standby rig - a K2/100 - on the other, switching either one to the antenna
> feed.  The Daiwa CS-201A that I have in place now is rated to 2.5 KW SSB but
> only 1.0 KW CW.  The Daiwa 201GII has a 1.5 KW CW power rating, but it comes
> only with N-type connectors.  I could use that with three N-to-UHF adapters,
> I suppose, or redo three coax terminations; but thought I'd ask first if
> anyone knows of a manual switch with high isolation, unused side grounded,
> 1.5 KW continuous power capability, and UHF-F connectors.  My Internet
> search came up empty.
>
> Thanks in advance,
>
> Ted, KN1CBR
>
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