On Fri, 12 Mar 2004 01:19:42 GMT, "Jim Warner"
wrote:

Interested in buying a blown up 444 TenTec PA.
Price accordingly.
Jim


Do you have a way of repairing them?

The final transistors have long been discontinued.
Ten-Tec themselves have said that they can't get one working with
modern replacements without a total redesign of the amp.

Apparently its a problem of the gain(HFE) of the modern devices not
being compatible with the feedback methods used. They can get it right
on some bands but not on others.

Others I've talked with have confirmed this - not just Ten-Tec.

Doug