[ICOM] amp & ICOM question

[w6omf]

The book says:

The Alpha 8406 does not generate or use ALC voltages to control an exciter.

For proper operation the exciter transceiver should have its power output
set so as not to over drive the amplifier input.  Today's modern
transceivers have very good power output limiting.  As a rule ALC is not
needed if the transceiver is less than 15 years old

Should your transceiver be older then the power output should be reduced so
voice peaks will not overdirive the transmitter under any modulation
conditions.


As I said hook up was easy and tune up was just as easy... tune and dip,
tune and dip...

Now I notice the transceiver has muted receive audio when the amp is turned
on...(affected with the on/off switch not the standby switch) I assumed a
relay connection but finding nothing yet... so it's off to bed to sleep on
it... hi hi 

Hey! Thanks to everyone... always nice...73 Larry, night all... 



-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Adam Farson
Sent: Sunday, December 12, 2010 9:03 PM
To: 'ICOM Reflector'
Subject: Re: [ICOM] amp & ICOM question

Hi Mike,

The Pro3 does not have an initial power-output spike even if the ALC port is
not connected. If the amplifier has an ALC output, and the ALC loop is
connected, the amplifier will control the drive power. 

Cheers for now, 73,
Adam VA7OJ/AB4OJ


-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Mike
Sent: 12-Dec-10 20:04
To: ICOM Reflector
Subject: Re: [ICOM] amp & ICOM question

Is the Pro III output controlled by the Pro III's ALC?  If so, make sure you
don't overdrive the amp. due to initial full output from the Pro III.

On Sun, Dec 12, 2010 at 3:18 PM, Don Cunningham <wb5hak at martineer.net>wrote:

> Just be SURE to keep the drive low, at least at tuneup, Larry.  Not 
> much needed to get to 1500w PEP with these newer amps.  My 8410 will 
> scare you, hi.
> 73,
> Don, WB5HAK
>
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-- 
   73,
   Mike, K4GMH
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