Johnson 250-37 Directional Coupler

Richard Barth w3hwn at
Wed May 18 14:48:52 CDT 2005

Anybody know what the upper frequency limit is for this beast?
I have one, but can't find the manual, and would like to know
whether it's usable at 440 MHz.


Richard Barth *** W3HWN at ARRL.NET *** Silver Spring, MD 

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