The new High Power Linear is a derivative of my existing Linear; the new one has much bigger heatsinks with IRF520s for increased power output - typically 15 W on 20m, or even up to 50 W on 160m with a higher supply voltage! It also includes the TR relays and a low pass harmonic filter.
The AMU design is much easier to build now! It now uses switch selected toroids for the inductor that needs to be adjustable. In other respects, the design is unchanged and still incorporates a matching bridge and it can drive balanced or unbalanced aerial systems. Suits most aerial and feed systems in common use over 2 to 30 MHz!
Don't forget that readers of Hot Iron get advance warning of new developments!
There is a wide range of designs, with something for most radio interests and construction abilities. These kits are for people interested in analogue radio! You can start with a small project or build your own complete station. The circuitry is what I concentrate on with the aim of maximising 'performance' for whatever you decide to spend. Most of the kits can be easily adapted to add facilities, because of the simple mechanics and the wide range of accessories. All kits are built in stages with testing as you progress so that, with the extensive instructions, you should develop a good understanding of how the project works and thus succeed first time! When combined with low cost mechanics, these kits provide excellent value for money and most will satisfy the practical examination aspects of obtaining your licence. Choose from:-
I also publish the quarterly newsletter Hot Iron which is sent by e mail to those who have specifically asked to be included on the distribution list; it contains mildly technical articles (with very little maths), kit design ideas or outline information, questions, builders kit experiences, general electronic news, etc on semi-technical subjects, with advance notice for new kits - so why not tell me your e address now! I am always delighted to have material for it and suggestions for topics that might to be covered.
I hope so! If not please tell me what's missing - I am always delighted to have suggestions for new kits. Any comments or questions are very welcome to me, Tim Walford G3PCJ, at the address below or via e mail to firstname.lastname@example.org This site was last updated on Oct 23rd 2017.
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Upton Bridge Farm, Long Sutton, Langport, Somerset, TA10 9PZ England
Tel ++44(0)1458 241224 email email@example.com