>At 02:19 PM 5/17/97 +0000, you wrote:
>>Hi Phil,
>>
>>.........The
>>AL-811H ........... (it uses neutralization and tuned input).
...snip...
>>If you look at the Heathkit Warrior and Gonset 811A PA, you'll see
>>they are neutralized. So is the AL-811H.
The Warrior and the Gonset were thought to be neutralized. However, they
were not and they were not stable. The SB-200 and the SB-220 were not
"neutralized" because someone at Heath came to their senses.
...snip...
>>I'm not saying the 30L1 was poorly constructed, but it certainly
>>would have been a better PA if they neutralized the PA. In that case,
>>any length cable could have been used.
The reason why Collins Radio Co. did not neutralize the 30L-1 is because
there is no way to neutralize a single ended g-g amplifier. [see *Care
and Feeding of Power Grid Tubes*]. Mr. Rauch has apparently succeeded
in convincing himself that he can do that which is not possible.
Rich---
R. L. Measures, 805-386-3734, AG6K
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