On Wednesday 25 January 2006 20:58, Ron D'Eau Claire wrote: > Here's an informative link explaining Mode A and Mode B for anyone still > scratching their head in wonderment... > > http://home.att.net/%7Ejacksonharbor/modeab.pdf
I have no idea, before I read about A and B, what everyone is talking about. I made an iambic keyer from G3RVM's 'ultimate' keyer (Mk2) published in the RSGB's Radio Communication, February 1980. It has auto charcter spacing, the addition in that design to the original in May 1977. I would love to reverse engineer the gates and flipflops to write such a keyer for a modern microcontroller. I am not up to doing that without a serious learning curve. I have written one, with such spacing, but it doesn't feel quite the same. I have given up on iambic completely now. I can't stand inaccurate sending with extra dits and dahs and don't trust myself. I programmed a PIC 16F628 to connect to a standard AT keyboard, internal to the keyboard, and produce morse as the keys are pressed, in otherwords, a keyboard keyer. It has one component and an external regulated power supply, a wallwart from RadioShack. Ian, G4ICV, AB2GR, K2 #4962 -- _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
