On Fri, 22 Jan 1999 16:55:26 -0000 "john" <john@servoflame.co.uk> writes:
>
>Hi All
>
>I asked Eimac for their recommended idling current for a 8877 on 6m
>with an
>EHT of 3500V. They recommended 175mA for Class AB. On GJ4ICD's web
>page he
>runs his at 80mA with 2600V EHT. Various comments on this reflector
>seem to
>agree with GJ4ICD.
I have not noticed any comments on this reflector about that.
However Ameritron runs 150-160ma in their AL-1500 at 3500VDC. I would
follow Eimacs recommendation for best IMD short of a spectrum analyzer..
73 and see you on 6M
Carl KM1H
>
>With a 12V 50W Zener bias I'm actually getting 125mA idling current at
>about
>3800V off load (3400V on load). My concern is that the EHT transformer
>is
>rated at about 0.5A continuous (my guess) so any reduction in idling
>current
>will be beneficial. I'm not really worried about ultimate power out as
>we
>only have a 400W limit in the UK but I do want to run the amp as clean
>and
>as cool as I can.
>
>So what should it be ? Any advice/comments would be appreciated.
>
>John G0EVT
>
>
>
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>
>
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