Bob\'s Antique Radio & Electronics
- Quality restoration supplies for vintage radios, amplifiers and juke boxes. Supplies include capacitors, electrolytics, pilot lamps, AC power cords, dial cords, Novus polishes and reproduction items.
- A numerical optimizer (solver) for LTSpice IV. Uses a fast evolutionary algorithm. You can use EvoSpice to design high efficiency power supplies, audio filters, low noise RF amplifiers and an endless list of other applications
Converting the Amp Supply LK-500NT
- A technician's nightmare. The NT or No Tune amplifiers from Amp Supply were the abomination of the amplifier world. The only way that I know of to repair these amplifiers is to clean out the mickey mo
Using cheap tetrodes in amplifiers
- This article is written to dispel some of the misconceptions and misunderstandings about some of the tetrode based linear amplifiers, which are currently available on the amateur market.