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Lou Kolb <[log in to unmask]>
Sat, 12 Apr 2008 14:48:50 -0400
text/plain (87 lines)
Man!  I really need to review these posts before I hit send.  What I meant
to say was is it automatic level control as it is in a transceiver or is it
actually automatic load control in an amp?  Lou
----- Original Message ----- 
From: "Lou Kolb" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, April 12, 2008 2:11 PM
Subject: Re: Using automatic load control


> Just for the sake of clarity, are we talking about automatic level control
> here or is it actually automatic level when used with amps?  Lou
> ----- Original Message ----- 
> From: "Fred Adams" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, April 12, 2008 11:30 AM
> Subject: Re: Using automatic load control
>
>
> > Steve, thanks much for the the good info that you have just given to me.
> In
> > the past I have always used the radio drive power but I have wondered
> about
> > the ALC and how to adjust it.  I have an old Alpha 78 that I run in the
no
> > tune position so all I have to do is make sure my standing wave is OK
and
> > set my radio drive power.  I usually run barefooted anymore but
sometimes
> I
> > use the amplifier.  Seventythree,
> > ----- Original Message ----- 
> > From: "Steve Forst" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Saturday, April 12, 2008 8:48 AM
> > Subject: Re: [BLIND-HAMS] Using automatic load control
> >
> >
> > > Fred,
> > >
> > > I'm new to the amp game.  As Steve and John both said, ALC will
prevent
> > > overdriving but  may not be needed if the input is set properly.  My
> amp's
> > > manual bears this out as it says that ALC may not be needed if drive
> > > power and mic gain are set properly  at the transceiver.
> > >
> > > You asked how ALC adjustments are made.  Again, according to  the THP
> > > manual:  With the proper ALC connections made between rig and amp, and
> the
> > > rig set properly, transmit full output power from the amp into a dummy
> > > load. Slowly turn the ALC adjustment knob on the amp until output
power
> > > just starts to drop off.  Stop at that point or continue turning the
> knob
> > > to further limit output power.
> > >
> > > 73, Steve KW3A
> > >
> > >
> > >
> > > ----- Original Message ----- 
> > > From: "Fred Adams" <[log in to unmask]>
> > > To: <[log in to unmask]>
> > > Sent: Friday, April 11, 2008 5:04 PM
> > > Subject: Using automatic load control
> > >
> > >
> > >>  Do any of you guys that run amplifiers use the ALC and if so how do
> you
> > >> make ALC adjustments? I have never used the ALC as I didn't know how
to
> > >> make
> > >> the adjustments. I would appreciate any info. on this.
> > >>
> > >> Best wishes,
> > >>
> > >>
> > >> FRED ADAMS W4HC
> > >> FIGHT TRUTH DECAY
> > >>
> > >>
> > >>
> > >
> >
>

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