*IF* the user can remember to turn the exciter power level down before
turning on the amplifier, ALC is not necessary. However, it remains the
only failsafe way to prevent damage to the amplifier from sustained
overdrive. Given the cost of replacing transistors in the amplifiers,
I would certainly implement ALC with any amplifier (unless, of course,
it could automatically set exciter power level as the KPA500 or KPA1500
with the K3/K3S).
73,
... Joe, W4TV
On 2020-07-17 8:59 AM, j...@kk9a.com wrote:
Every amp that I use I would overdrive with the Elecraft set at 100
watts. I am not familiar with the Quadra, I typically adjust the PWR
(power output) control to the desired wattage and have not had an issue
with any that that I have used. I see a lot of talk about using ALC on
the SPE Expert amp list. I have not used this brand and do not why ALC
appears to be recommend for them. I have not connected an ALC cable in
decades.
John KK9A
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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