Radiophile valve transmitter

[radioman]

Chas has published a number of valve-based 'pantry' transmitters over the years, but I think the one the OP is referring to was based on a circuit from long ago...
My Radiophile mags are randomly stored in assorted piles/boxes/locations so not easy to search through unfortunately.
For something else, this 6AS6 based design looks interesting :-http://www.radiomuseum.org/forum/hi_fi_a...itter.html

Andy