Is this tube, EIMAC 8560A, the same as an 8873? They look similar. I was going buy two for an SB230. They came from an RF Paging Amplifier. Regards, Monty/WB5GLB -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.contesting.com/km9p/search.htm