[Boatanchors] Class D wavemeter Mk I and MkII and other Brit. wavemeters

[William L Howard]

>
> The Regular Army used the Class D wavemeter Mk I and MkII versions,
both
> much inferior to the BC221, The Navy had a wide range of Crystal
calibrators
> and heterodyne wave meters, but ther seens little info available on
> thesenow. Judging by what turns up at ham junk sales, rallies etc, the
BC221
> dominated.

I would like to know more about British wave meters. I have two British
wave meters which no one seems to know anything about. MOD contacts were
"probably used to develop radar" but nothing definite.

Bill Howard