Hi Can anyone tell me if the 6146W is interchangable with the 6146 in the Ranger and Valiant? Also- is the 6AU6WC (also called 6136) interchangable with the 6AU6 in the same rigs? Many thanks and 73 Steve WA2DTW __________________________________ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus