[Hallicrafters] HT-41

[John Hurst]

hi Andy. You mentioned that your linear is loaded below its maximum rating.
If you're doing this by reducing the output capacitance of the pi network
then this might be your problem. Linear amps should always be loaded
slightly beyond the point of maximum output for best linearity AND to reduce
the peak voltages on the tube side of the network. See W8JI's web site for
more details http://www.w8ji.com/.

John, KU6X

----- Original Message ----- 
From: "Andy WA2FFY" <wa2ffy at 1smartisp.net>
To: "Ed Gable" <k2mp at eznet.net>
Cc: <hallicrafters at mailman.qth.net>
Sent: Thursday, June 19, 2003 7:00 AM
Subject: Re: [Hallicrafters] HT-41


> Thanks Ed,
>
> > Hi Andy:  A little data would help.  At time arc starts; power in/out
and
> plate current.
>
> Plate current is 300-400 ma but rises on voice peaks.  Linear loaded below
> max rating as per manual.
> Power in = 100 wts frm an HT-37
>
> > Using dummy load ?
>
> No...but SWR less than 1.5 to 1.  Using MFJ-1798 10 band vertical.
> But it arced with a dipole also.
>
> > All bands ?
>
> Unfortunately yes...
>
> 73,
> Andy WA2FFY
> Pittsburgh, PA
>
>
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