ALC is not needed if you set the K3 to 60w (or whatever the appropriate
drive is for each band) using the K3's per-band option.
Using ALC to control the drive will also introduce distortion.
The only disadvantage of the per-band power setting is that if you want
to run more than 60w when you operate barefoot, you have to remember to
turn it back down when you want to use the amp. This is automatic with
the KPA500 and 1500, but not with a non-Elecraft amp.
I once created a macro which would set the power and activate one of the
K3's digital outputs, which I used to control a relay that switched an
amp in line. That worked. But now I just run 60 or 70w when I'm
barefoot. There isn't that much difference from the full 100w.
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
.
On 17/07/2020 3:48, Joe Subich, W4TV wrote:
Is it necessary?
Yes. The Quadra produces is rated 1000 W output with approximately
60W drive. The K3 will overdrive it resulting in splatter/IMD and
potential damage to the transistors.
73,
... Joe, W4TV
On 2020-07-16 7:25 PM, Dean L wrote:
I'm working on a Yaesu VL1000 for a friend and wondering if
anybody's had experience setting up ALC with the K3 and the
VL1000? Is it necessary? I'm not much of a QRO guy as you can
probably tell.
Thanks in advance for your help 73
Dean K2WW
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