Well folks ... I do apologise but we are not going to be on the air 
tomorrow (Thursday 3 April) for sure and probably not Friday either.

Having had an emergency midnight phone meeting with Barb Woolner and 
Andrew Fogarasi, it was decided to devote our time to getting on-air at 
the new frequency (92.7) and not going back to 96.3.  I am not even sure 
the latter option is possible.  The new antenna is not tuned for the old 
frequency and it is doubtful it can radiate much more than a few watts.

So we'll press on and try and put things to rights, as soon as possible.

Sorry about this ... I had hoped that a problem like this would have 
revealed itself during the "burn in" period.  Why it failed now is not 
known while I write this.

Take care everyone // jkm


The technical problem ... for those interested ...

There is a crystal oscillator which is used to generate our frequency of
92.7MHz.  Crystals are often used as they provide a stable output given 
a stable temperature.  There is a system of heat and thermostatic control 
called an "oven" which is designed to keep the crystal at a constant 
temperature (in this case 75 degrees C)  Unfortunately, the sensor is not 
responding correctly and the "oven" is in constant heating mode, causing the
the crystal's output frequency to creep up.  So we have a situation of 
runaway heating causing runaway frequency.  So, instead of broadcasting at
92,700,000 Hz we were at 92,706,000 and climbing.  Eventually, either the 
crystal would fry or the transmitter would shut down.

The biggest concern just now, is that replacement temperature sensor may 
be hard to find, an more than impossible in Peterboro at midnight.

More news tomorrow.  Thanks again.

best // jkm

Part Identification: 75C Solid State Thermal Switch
Microtherm TS3 - 75 B3
RS 307935
Farnell 151598