Ameritron AL-1500 with EBS-1 Board ??

[WA4ONV]

Hello Fellow Hams,

I have an older Ameritron AL-1500 Amp about 12 years old with build in QSK. I was given a brand new Ameritron  EBS-1 Electronics Bias PCB. My question to you experts out there is, Is it worth installing this Bias control board ?  Thanks and best of 73.   Joe  WA4ONV

[W1QJ]

I'd say not worth it.  The idle current plate dissapation is a fraction of the tubes 1500 watts dissapation and I would not worry about it.  It may cause more problems than its worth. Lou

[W6GF]

I do not agree.  Install it.  Look at the idle plate current, then multiply by the high voltage.  You will see that power is about 40% of the plate disapation rating of the tube.  If I wasn't so lazy I would put one in my AL-1500 or if you do not want yours sent it to me!

George,W6GF

[JUNKMAN]

Ameritron's EBS circut is junk. I've had to disable it on every AL-800H amp that I have ever owned because of the distortion that it causes in the transmitted audio. Even the tech at Ameritron told me to do the same thing when I called them about it.

[WB1AEX]

I am also one who has found it necessary to disable this "gimmick" in my AL-80B. I experienced the very commonly reported first-syllable-clipping as well as a grotesque gritty threshold effect in between words. I would prefer a clean sounding signal any day.

73,

Rob WB1AEX