Funny what you find on ebay these days.

[Nick]

They have been selling these for quite some time, they also sell the spitfire transmitter, apparently they work quite well.

I have a Spitfire as a pantry transmitter for my AM radios - nice box.

I also have an SSTRAN AMT3000 (http://www.sstran.com/#AMT3000) which is, IMHO, much better quality.

However, both are good kits.

I would have built my own out of bits of string and whatever I had in the parts bin, but the truth is I'm a digital & LF analogue guy, not an RF one...