[Elecraft] TX Monitor Directional Couplers?

[hawley, charles j jr]

Are the directional couplers, the DCHF-xxxx, the same as the ones on the W2 wattmeter? I seem to remember something about modifying an existing directional coupler in the early days of the P3TXMON.
If they are exactly the same do all the directional couplers ever sold, early ones and now later ones, work with the P3TXMON?

Chuck Hawley
 c-hawley at illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles