> The 1N4007 is rated 1000V @ 1A. The 1N4005 is rated 600V @ 1A. The > 1N4005 should work just fine... The 1N4007 is used as a poor-man's PIN diode, I believe, in this application. The voltage isn't important, but the diode internal physics are. I believe you want a 1N4007 for it to work properly. 73, Lyle KK7P