Just to clarify... use of ALC with the PW-1 is not to adjust drive power.
That's a bad practice. You MUST use the ALC line because the amp uses this
as a primary means of protection. Without ALC, a fault condition can
damage the amp.
73,
Josh W6XU
Well, yes it is when connected to an Icom transceiver it is used precisely
to control drive power.
I have the PW-1 connected as recommended in it's manual to an IC-7600. My
output control is set for about a hundred watts barefoot and 1 kW when the
amp in enabled. The output power when driving the PW-1 is far less than
100 watts and the only thing controlling the drive is the ALC line.
Besides, I thought that's exactly what I said.....
The proverbial fly in the ointment is that the I don't believe the KX3 HAS
and ALC input.
Chas
----- Original Message -----
From: "Josh Fiden" <j...@voodoolab.com>
To: <elecraft@mailman.qth.net>
Sent: Tuesday, July 29, 2014 9:54 PM
Subject: Re: [Elecraft] KXPA-100 to ICOM PW-1 amplifier
Just to clarify... use of ALC with the PW-1 is not to adjust drive power.
That's a bad practice. You MUST use the ALC line because the amp uses this
as a primary means of protection. Without ALC, a fault condition can
damage the amp.
73,
Josh W6XU
On 7/29/2014 12:41 PM, Charlie T, K3ICH wrote:
You better make sure you have a reliable ALC connection in there
somewhere because you'll smoke the PW-1 if you hit it with a hundred
watts. They normally take about 35 -45 watts drive for full output.
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