[Elecraft] Macro to Disable Key out

[Jim Miller KG0KP]

Is the amp a solid state amp?  My ALS500 has an on/off and that is it but 
WHY would anyone need or want a standby switch on a solid state amp?  It is 
"off" and draws "no" current (probably a few mils) when RF is not present at 
the input.  I never turn mine off even when I turn off everything else.

73, de Jim KG0KP

----- Original Message ----- 
From: "Radio Amateur N5GE" <n5ge at n5ge.com>
To: "Elecraft List" <elecraft at mailman.qth.net>
Sent: Monday, November 09, 2009 4:28 PM
Subject: Re: [Elecraft] Macro to Disable Key out


> On Mon, 09 Nov 2009 08:47:45 -0800, Vic K2VCO <vic at rakefet.com> wrote:
>
>>John Huffman wrote:
>>
>>> I would like to add a command to the macro for the antenna using the
>>> internal tuner.  I would like to disable the "key out" amp relay.  Don't
>>> want the K3 keying the amp if it is not the antenna getting power.
>>>
>>> Since my amp doesn't have a standby position (Ten Tec Hercules II), I
>>> would also like to bypass the amp relay when tuning the manual tuner.
>>> But, I can't find a command in the Programmer's Reference to disable Key
>>> Out.
>>>
>>> Is there an undocumented command to disable Key Out?
>>
>>I also wanted to do this, but apparently it's not possible. Another way to 
>>do it would be
>>a command to activate the DIGOUT1 line on the ACC connector, which could 
>>operate an
>>external relay. Or change the state of the KRC2 ACC output (if you have a 
>>KRC2, as I do)
>>by activating the KRC2 menu item.
>>
>>Unfortunately, either of these would be 'sticky' -- once activated it 
>>would stay activated
>>until another command turns it off. I want something which will default to 
>>'amp off' when
>>powering up the K3.
>
> It amazes me that an amateur radio amplifier manufacturer would offer
> an amplifier that had no standby switch or setting.  I wonder if that
> amplifier that you mentioned bypasses when the power to the amp is
> off?  Does it use RF sensing to switch the relay(s) or does it use a
> control line from the rig?
>
> Unbelievable!
>
> Tom, N5GE
>
> n5ge at n5ge.com
> K3 #806, K3 #1055, PR6,
> XV144, XV432, KRC2,
> W1 and other small kits.
>
> 2 W2's on order
> 1 K144XV on order
>
> http://www.n5ge.com
> http://www.swotrc.net
>
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