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Thanks Gordon / Alison,

In the mists of time, along time ago now......

there was a suggestion of what about using 'this or that', off the shelf relay board,

I agreed with another contributor that it didn't look particularly "suited to RF" applications. General observation, not a full on analysis.

(Just what ever is ultimately chosen should be a best as possible a "cure all" (to which there is no such thing, we can only strive to become close)

(Some regions are governed by the -50dB rule, we cannot ask you NA / US solutioneer's? be guided by that.

It would be nice however not to have to reinvent the wheel to come up with another solution that satisfies "our legislation"?))

Now it's resorted to quoting Lecher Lines / Skin resistance and? waving smiths charts at dawn.? :-P

Can we agree the theory of short, direct traces is good

"Noodle soup" bad.

Well bonded top / bottom groundplanes are good

Input traces parallel to output traces, bad

Attention paid to layout, Good?

and 1001 things that that all can be read in a book, possibly EMFD all contribute to good practice.

(Sometimes even that is not enough,

and sprinkling 103's liberally everywhere at least shows willing, or weakness....? :-) )

It was what I was trying to portray?

looking back, at what I wrote.

The LPF's work. The physical relay device chosen works, the problem was how it was all put together

Alan