[Elecraft] Remote On/Off KPA-1500

[Jorge CX6VM]

Thanks Bob

Very helpful as always.

I want the KPA1500, but I am afraid of bringing it  so far 

73,
Jorge

Enviado desde mi iPad

El 20 mar. 2019, a la(s) 19:31, Bob Wilson, N6TV <n6tv at arrl.net> escribió:

> On Mon, Mar 18, 2019 at 7:39 PM Jorge Diez - CX6VM <cx6vm.jorge at gmail.com> wrote:
>> what are the diferent ways to turn KPA1500´s on/off remotely?
>> 
>> Is there any way to turn it on/off alone, with no need to turn on/off the
>> K3?
> 
> Yes.  There are at least three methods to power the KPA1500 ON/OF independently without using the REM jack on the back of KPA1500, assuming you leave the rocker switch on the back of the separate KPA1500 power supply in the ON position:
> Connect the KPA1500 to a PC via USB cable.  Use the KPA1500 Utility (running on a local PC) to power the amp. on and off.  The KPA1500 Remote Software also has this capability.
> -or-
> Momentarily ground Pin 8 of the KPA1500 AUX connector.  This is easily accomplished using an S-BOX or S-BOX-USB and a simple program to pulse the DTR or RTS pin of a real or virtual serial port, or you can build an equivalent circuit using a resistor and NPN transistor (same technique that is used by RemoteHams software to power up a K3 remotely with no RemoteRig box required).  A KPAK3AUX cable cannot be used (no connection on Pin 8).
> Use a Y-BOX v2.1 which can connect DIGOUT 1 (Pin 11) to the amplifier PIn 8, and a K3 Macro, as described in detail here.
>> For example i want to turn on K3, but want to have KPA1500 off, is there any way to do that?
> 
> Yes.  See above.
> 
> 73,
> Bob, N6TV