[Elecraft] KPA-500 from Orlando

[Bill K9YEQ]

Don,

Thank you for your input.  I would also want band switching to work with
both.  I know if I shut off the 2.5KFX it is bypassed.  The issue is to
control both, with one or the other shut off.  I operate lots with the 2.5
shut off.  I also have the P3, which shouldn't be an issue, I would think.
I need to get the KPA-500 soon so the other half doesn't notice too much
change and before she retires.   Have been loading up the shack if you know
what I mean.  :-)  

Also,  I have not resolved the KX-1 question yet, so when I get time will
try one more time and if not successful will send to you.  I am not about to
retire, so am so busy I have trouble keeping up with all the great Elecraft
stuff that I keep adding just so I have it.  I even miss updates unless I am
a beta tester.  If I get the beta it avoid so much of the watching the list.
Most beta's are perfect.  

Bill
K9YEQ


-----Original Message-----
From: Don Wilhelm [mailto:w3fpr at embarqmail.com] 
Sent: Tuesday, February 15, 2011 5:26 PM
To: Bill K9YEQ
Cc: Elecraft
Subject: Re: [Elecraft] KPA-500 from Orlando

  Bill,

I don't know how many lines you have connected between the THP and the K3,
but the simplistic view would be to use a relay to switch the RF input
between the two amplifiers and also place the non-selected one in Standby.
Of course that simplistic solution would require that both amplifiers have
an input signal line to place the amp into standby remotely - many do not,
but modern amplifiers should IMHO.  Older amplifiers typically have only a
front panel switch.

73,
Don W3FPR

On 2/15/2011 6:15 PM, Bill K9YEQ wrote:
> Wayne,
>
> I have my THP HL-2.5kfx, is there a way to control both via the K3?  I 
> would like to select the device to use based on conditions without 
> going through a lot of switching.
>
> Bill
> K9YEQ
>