[AMRadio] Valiant

[Mike Dorworth]

It is easy to pre load and check the output circuit. Place a carbon or film
resistor 1/4 th watt or better from plate to ground (power off of course)
value equal to 1/2 the modulating impedance and use a antenna meter to set
the caps and load to 50 ohms looking in from the antenna connector (1:1
swr)..Mike K4XM
----- Original Message -----
From: Bill Russell <willy at global2000.net>
To: <amradio at mailman.qth.net>
Sent: Friday, April 05, 2002 8:46 AM
Subject: Re: [AMRadio] Valiant


> Hi John,
> Yup, sounds like one or more of the fixed loading caps went south. Its a
> good idea to replace them. I believe the Valiant uses a multi section cap
> for this purpose. REPLACE IT with single caps.
>
> Bill KC2IFR
>
>
> At 08:37 AM 4/5/02 -0500, you wrote:
> >Hi John,
> >
> >I once had an output loading cap fail in the coarse loading
> >switch on my Viking II.  I guess it shorted.  If that
> >happens, the coarse loading adjustment can only work up to
> >the point just before it switches in the shorted cap.  If
> >that does not give you enough capacitance, you run out of
> >adjustment range and you may not be able to get the plate
> >current dip low enough on some of the lower bands.
> >
> >Bacon, WA3WDR
> >
> >_______________________________________________
> >AMRadio mailing list
> >AMRadio at mailman.qth.net
> >http://mailman.qth.net/mailman/listinfo/amradio
>
> Bill Russell
>
> _______________________________________________
> AMRadio mailing list
> AMRadio at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/amradio
>