Mid Warwickshire Amateur Radio Society Meetings Archive

Visit to Motor Cycle Museum, then Lunch

A very worth-while visit, followed by excellent value lunch.

Technical Topics

Presentations included voltage regulation for a radio-control power boat; introduction to astro-navigation theory and it's application to HF propagation. And the mysterious affair of the erratic bathroom scales that showed differing reading depending on the surface the scales were placed on - none of us engineers / scientists / technicians could fathom what was going on.  Later note: it turns out that this question has been recently  looked at in depth by no less an authority than the Engineering Laboratory at Cambridge University... They attribute the odd effect to the compromises inherent in designing scales which get placed on (mostly) hard surfaces.

Mini Talks by Members

The talk rather overflowed the "mini" package, covering the topic of losses in voltage multiplying circuits.   See some of the graffiti here!...   More graffiti here!

Meet Your Fellow members Night

This was a highly succesful - and enjoyable - get together.   We were very pleased to welcome three new people with an interest in amateur radio.   It was very instuctive for us a club to note that they were separately interested in quite different areas of amateur radio, reflecting the broad spectrum of interests for which the hobby caters .   An evening quite different from our usual lecture/ presentation format,   but one which we shall be repeating.

AGM

This meeting gave thanks to G4CYG the outgoing Chariman for his untiring efforts for the Club over many years.   He has handed over to Roger M0RJG who outlined a number of initiatives we could get involved in over the coming months.   As per the 'front page' announcement on this site new members can take advantage of a concessionary rate for 2008.

Technical Topics

M0JDB and G4CYG looked at a current project the construction of one of the famous Howes kits, in this case for an 80 metre crystal controlled transmitter. We looked at the output stage ( see circuit here) .    Design criteria for matching the output (power) transistor were explored  (see diagram here)  , and an attempt was made to measure that particular transistor's inductive load   (L3 on the diagram here)  , but this failed, probably because we had assumed it was a dust iron toroid rather than a ferrite (which have much higher inductances).

This 'Archive' web page will be intermittently updated with reactions/ further thoughts etc on events. 

The purpose is to show the wide-ranging - and stimulating -programme of activities the club gets involved in.

Would like to know more?         Then come along to a meeting.           See: Contact details.
.