RAM - Repeaters & Technical

New demo board made for the next Basic course.

What is it? A silver plated brass pipe that forms part of the adjustable 1/4 wave stub in a duplexer. Why am I showing it to you? We need to put new threads on the end; anyone got a 3/8-40 die we can borrow for an hour? (Yup its an odd size not found in your typical consumer T&D set).

For bonus points we need a replacement nut thingy (sort of looks like a collet) that screws onto the pipe to clamp down the invar rod that passes through it. We have the locking nut off the top but the big part self destructed (all brass so it's easy to work and also easy to OVERwork - IYKYK). Any ideas as to a source or even the correct name? And yes I've checked McMaster-Carr.

For that Ham you love that enjoys the occasional candle.

Derek Hay is that you in this picture?