28-08-2015, 07:36 AM
(This post was last modified: 28-08-2015, 07:47 AM by Radio Fixer.)
(27-08-2015, 05:20 AM)ppppenguin Wrote: Coming back towards the original topic, a valve bsaed pantry TX seems like a nice idea but for something that may well be running 24/7 I'd like to minimise heat and power consumption. Each watt drawn 24/7 from the mains costs about £1 per year.
My bottle of beer of an evening costs more than a £1 a day but I'm not worrying about it Jeffrey
We have been around this loop before I think but never mind. I have had the Peter Lankshear design running 24/7 (just two valves and silicon rectifiers) for maybe 5 years. Its pretty powerful and 2ft of wire will cover quite a lot of house for sensitive receivers. Performance sounds fine (how its constructed matters and I did find ways of lowering intermod hum) and in tests with an SSTRAN it was hard to tell the difference. Never had anyone knock at the door and think its most unlikely and cant find any trace of it outside with a portable receiver (maybe not sensitive enough).
Gary
