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List:       elecraft
Subject:    Re: [Elecraft] Elecraft K3 lock power control
From:       Bob McGraw K4TAX <rmcgraw () blomand ! net>
Date:       2017-08-30 16:42:30
Message-ID: D02F2338-1F44-419E-84CC-5AA870BC57A4 () blomand ! net
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I've not used ALC from the amp to control the transceiver power in years.  Just set \
the transceiver power to the required power during tune up of the amp and let the \
superior transceiver ALC do its job.  This greatly prevents ALC overshoot.  

Bob, K4TAX


Sent from my iPhone

> On Aug 30, 2017, at 10:33 AM, 2EØLDZ <ldz@chopcat.co.uk> wrote:
> 
> Thanks Keith
> 
> Yes. I have been using the lock function to date.  And will carry on in that way.
> 
> The issue of what I am trying to do comes up as we are using an amplifier that is \
> not compatible with the ALC control on the K3S therefore the need to minimise the \
> risk of overdriving.  It would be nice to have some flexibility in that for less \
> experienced users (especially as it is my radio I am lending to the club!) so that \
> they can experiment with the power levels up to a set limit, without me risking my \
> radio. 
> I fully appreciate that if this were in a KX500 setup none of this would be \
> necessary but maybe it could be considered in a future iteration of the software. 
> cheers for the response.
> Trevor Clapp
> M6LDZ
> 2E0LDZ
> LDZ@chopcat.co.uk <mailto:LDZ@chopcat.co.uk>
> 
> RADIO BLOG <http://chopcat.co.uk/page1/blog/index.html>
> 
> 07900 49 77 11
> 
> 
> 
> On 30 Aug 2017, at 16:21, Keith Trinity WE6R <keith@elecraft.com \
> <mailto:keith@elecraft.com>> wrote: 
> Hi Trevor; I saw your post. This has baffled me when a radio comes in for repair \
> and is LOCKED.  You can use it for your club operations to lock the power control. \
> Unfortunately, they cannot go LOWER in power either.  (the word LOCKED is NOT in \
> the manual, so hard to find this). (We can set the max power here at the factory \
> but it would require a trip here and back here to un-do the limit- Japan has a 50W \
> mobile limit).  
> LOCKED shows in the display when attempting to set pwr power mic comp compression \
> controls.  FiX; Tap 1 in "PWR SET" menu. 
> Tap 1 to LOCK or UNLOCK the MIC, CMP, and PWR controls.
> 
> PWR SET NOR If set to NOR, the power level on each band follows the present setting \
> of the PWR control. If set to PER-BAND, the power level is saved on each band. This
> is especially useful with external amplifiers (see ALC discussion on page 82.)
> If a KPA500 is connected to the K3S via the ACC cable, two sets of per-band
> power settings are saved: one for "barefoot" operation, one for use with the amp.
> When the amp is used, an asterisk appears as PWR is rotated (e.g. 30 W*).
> 
> 
> 
> 
> 
> Trevor Clapp
> M6LDZ
> 2E0LDZ
> LDZ@chopcat.co.uk <mailto:LDZ@chopcat.co.uk>
> 
> RADIO BLOG <http://chopcat.co.uk/page1/blog/index.html>
> 
> 07900 49 77 11
> 
> 
> 
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