[Amps] Amps Digest, Vol 26, Issue 85

[K3vw@aol.com]

I say the AL-1500 for several reasons. The 1500 has a grid trip protection 
circuit, the 1200 does not. The 1200 has a neutralizing circuit to keep it from 
oscilatting on 10 meters, the 1500 is stable. The 1200 uses about 160 watts of 
filament wattage, the 1500 uses 50 watts. The 1200 needs about 100 to 150 
watts drive for full output, the 1500 needs about 85 watts drive. The replacement 
cost is about the same now and used 8877's are easier to find than 1200's. If 
I had another AL-1200, I would put a 3CX 1200Z7 tube in it and aleviate some 
of the problems. Willy K3VW