K-3 Remote Power ON - OFF

[Art Suberbielle]

Hi,
 
 
I'm setting up the rig to operate from a remote location over the Internet.
 On page 43, the manual has a very brief description of how to turn the
radio on  and off.
 
If I activate a relay remotely to ground Pin 8 on the ACC socket, I can  
turn the radio on. Will it hurt anything if I use a relay that keeps this pin
on  ground the entire time the radio is ON? Or do I need a momentary contact
relay  to just give it the brief connection to ground?
 
Then to turn it off, the manual states that a PS0 cat command should be  
sent. Then deactivate the POWER ON signal. Specifically, after sending a cat  
command PS0, will I simply have to remove the ground from Pin 8 on the ACC  
socket? Or how will this be accomplished?
 
Thanks for the input.
 
Art KZ5D



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[Don Wilhelm-4]

Art,

I don't have specific information about it, so I can just give a guess.  
If I were implementing a remote power on/power off sequence, I would
activate the relay for power on.  Whether I de-activate it after a few
seconds, I don't know, but for certain on power off, I would first
deactivate the relay and then send the PS0 command to the K3.

If I sent the PS0 first and then deactivated the power on relay, there
is a chance of a delay between those two event, and the K3 could power
off and then power on again because ACC pin 8 is still grounded.
In rapid-fire sequence, it may not make a difference, but why not do it
in the best order first and be done with any possible problems.

73,
Don W3FPR

[hidden email] wrote:

> Hi,
>  
>  
> I'm setting up the rig to operate from a remote location over the Internet.
>  On page 43, the manual has a very brief description of how to turn the
> radio on  and off.
>  
> If I activate a relay remotely to ground Pin 8 on the ACC socket, I can  
> turn the radio on. Will it hurt anything if I use a relay that keeps this pin
> on  ground the entire time the radio is ON? Or do I need a momentary contact
> relay  to just give it the brief connection to ground?
>  
> Then to turn it off, the manual states that a PS0 cat command should be  
> sent. Then deactivate the POWER ON signal. Specifically, after sending a cat  
> command PS0, will I simply have to remove the ground from Pin 8 on the ACC  
> socket? Or how will this be accomplished?
>  
> Thanks for the input.
>  
> Art KZ5D
>
>
>
> **************An Excellent Credit Score is 750. See Yours in Just 2 Easy
> Steps!
> (http://pr.atwola.com/promoclk/100126575x1222585065x1201462786/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072&hmpgID=62&bcd=Jun
> eExcfooterNO62)
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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