On Sat, 27 Mar 1999 19:55:46 -0600 "Greg Gobleman" <k9zm@frontiernet.net>
writes:
>
>Hi Carl,
>
>In a message about a MLA-2500, you said:
>
>>If you keep it loaded heavily and output at 1200W it should last a
>long
>>time.
>
>I have seen this term before, but really don't have any idea what you
>mean.
>Do u mean to tune it for peak then turn the load a bit more? I guess
>I
>don't know what "loading heavy" is.
>
>Thanks
>Greg K9ZM
Loading Heavy actually means to DECREASE the Load C value, it is
confusing. On top of that the 0-100 panel labeling is one way on some
amps and the opposite on others.
I prefer to tune for absolute max on the Bird and then increase loading (
Less C-2) until power drops about 5%. This will be the point of best IMD.
Any reduction in power should then be done at the exciter. A MLA with
perfect tubes is capable of over 1500W out @ 100W drive but that is
really pushing them.
73 Carl KM1H
>
>
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