[Elecraft] Coax Switches for KPA1500

[Dauer, Edward]

The Alpha Delta 2B fills the bill.  Don't know how I missed it in the Google search.  

Pricey at $75 but they have another advantage -- both sides grounded when the switch is in the "COM" position.  That isn't the case for the Daiwas.

If I have done the math right, 50 db isolation yields 15 milliwatts down from 1500 watts - should be OK for a K3/KPA1500 on one side and a K2 on the other.

Thanks!

Ted, KN1CBR




On 7/21/18, 1:49 PM, "hawley, charles j jr" <c-hawley at illinois.edu> wrote:

    Alpha Delta. It comes in N and also alternatively, SO239 connectors.
    
    https://www.dxengineering.com/parts/alf-delta-4b
    
    actually...
    
    https://www.dxengineering.com/search/product-line/alpha-delta-coax-switches?autoview=SKU&sortby=Default&sortorder=Ascending
    
    
    Chuck Hawley
     c-hawley at illinois.edu
    
     Amateur Radio, KE9UW
     aka Jack, BMW Motorcycles
    ________________________________________
    From: elecraft-bounces at mailman.qth.net [elecraft-bounces at mailman.qth.net] on behalf of Dauer, Edward [edauer at law.du.edu]
    Sent: Saturday, July 21, 2018 2:38 PM
    To: elecraft at mailman.qth.net
    Subject: [Elecraft] Coax Switches for KPA1500
    
    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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