[Wendymott]

Hi David. I had a Adret VHF Signal generator, which "died".. The Teledyne relays were taken from the attenuator. This was so heavily engineered, and I did note several custom made trimming caps at various points down the chain. At the time, I was not interested in keeping it as a "whole" item, thus it was recycled. However this version is not intended for lab use.. just my own.
RE availability of Teledyne..relays.. I bought some from a vendor on ebay recently at about £4 each, which I thought reasonable... they even had longer leads, compared with the adret items which were mounted on a very thin pcb, thus the leads were quite short.