The "Desert Ratt" is a clever design for a sensitive and well behaved
shortwave regenerative radio. It has been doing the rounds in various
forms since 1994, and quite a few people added new twists.

As I kept seeing roughly the same stuff popping up all over the place,
and found it somewhat hard to keep track of which version was an
improvement over another one, I did a bit of investigation to figure
out who did what, and what the direction of development was.

Read it all at:
http://webfools.net/filippo/desert-ratt.html

BR

Filippo/SpamHog
N1JPR/I2
http://filippo.ru.ru