[Elecraft] CP1 Power Handling

[Don Brown]

Hi

I have both the 20 db and 30 db versions of the CP1. Even though the 20 db 
is not rated that high I have used it at 100 watts with no problems for 
short times. I use them with the OHR WM-2 wattmeter. To get it to go to 200 
watts you would at least need to increase the wattage of the terminating 
resistors on the CP1 and probably need to increase the core size on the 
toroids. Of course I have not done this so I am just guessing.

Don Brown
KD5NDB


----- Original Message ----- 
From: "Linden, Mike (BRC-Hes)" <Mike.Linden at boschrexroth-us.com>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, March 07, 2006 8:33 AM
Subject: [Elecraft] CP1 Power Handling


  Does anyone know what modifications would need to be made to the CP1
Directional Coupler in order to get it to handle 200W at 20dB
attenuation?

  I'd like to use the CP1 as a cost effective means of extending the
useful range of my OHR WM-2 QRP Wattmeter, but 30dB is more attenuation
than I want and the power handling at 20dB is not high enough.

  Thanks, Michael N9BDF
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