I was looking under 'SW Receivers' on Evil Bay when I found a listing for a 'One Tube Regenerative Reciver'. It looks nice - acrylic plate on a walnut base. He claims it operates from 12V DC... like a wall-plug power pack. He indicates the tube used is a 1625. I remember the 1625... it has a 12V filament... I think it was the 12V filament ruggedized version of the 807 transmitting tube. I know a pair were used in the old ARC-5 module transmitters from WWII - for 50-75W CW or plate modulated AM. Is my memory correct? My old transmitter tube manuals and 60's ARRL Handbooks are boxed - somewhere. The tube looks like the one I recall - even with a plate cap. Gotta wonder... Stainz PS I've been an SWL since '62... got my Radiotelephone First Class (Now'General Radiotelephone') license 9/68.