The HD-1410 keyer
One of the items from the most recent electronic assortment purchased on Ebay: https://wb9kzy.blogspot.com/2026/06/buy-first-think-later.html was a Heathkit HD-1410 iambic keyer. It's a 5 IC TTL keyer with a discrete transistor clock generator, iambic B and a universal keying output for both cathode and grid block rigs. The design is similar to the WB4VVF Accu-keyer. The HD-1410 also has an AC supply built in as well as mechanical paddles, a sidetone and a tune switch - it's a pretty complete design. So I was hoping that it might just work at first try. I was disappointed :( One minor problem was that the included AC cord didn't quite fit right. It will power the unit but if the cord sags or is moved it loses contact. One way around this might be to replace the chassis AC power connector with an IEC "computer" connector ? I'll have to think about it. Similarly the DC power input uses some Molex connector for which I don't have a matc...