WOBBULATOR / DISPLAY  UNIT  for  RA.17
RACAL wobbulator

This is not the Panoramic adapter for the RA.17. Instead, this is a test equipment used to align the first (40 Mhz) IF filter in the RA.17. That filter consists of several critically coupled and staggered tuned circuits. The RA.17 is virtually impossible to align without this wobbulator, the CT.504 or a spectrum analyser with a sweep unit.
RACAL called this alignment tool "a combined Wobbulator/Display unit".

Here is a detail of the front controls.

RACAL wobbulator controls
That is all the information I have of this quite rare unit.
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