I'm working on a low-budget 100W transistor power amplifier for HF, based on the FQP13N10. By pairing these $2 transistors in a push-pull configuration, the estimated build cost of a functional amplifier will be in the ballpark of around $20-$30 each. This is only an extremely simple prototype which requires active PTT, has no filters, …

Continue reading WIP: Cheap 100W PA

I accidentally fried my KL405V during my trip to Svalbard earlier this year. About a month ago I was browsing for replacement transistors, and stumbled across a seller on eBay with lots of HG branded SD1446 transistors for a reasonably low price. I've read warnings about all about the fake transistors you buy out there, …

Continue reading KL405V new SD1446 transistors