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K3 power switching

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N7US

K3 power switching

I've been turning my K3 on and off with the front panel switch. Would
leaving it on and turning it on and off from the power supply be
problematic? (I turn the P/S on and off from an outlet strip.)

Jim N7US

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Don Wilhelm-4

Re: K3 power switching

Jim,

The K3 has many elements that are computer-like, and those processes
must be shut down in proper sequence. The power switch accomplishes
that feat nicely.
If you turn off the power supply, it is like pulling the plug, and the
K3 will be turned off, but you may find a problem when you try to turn
it on again because some bits get scrambled.

Would you turn off your computer by pulling the plug? Probably not, so
treat your K3 in a similar manner.

73,
Don W3FPR

On 1/6/2011 8:49 AM, N7US wrote:

> I've been turning my K3 on and off with the front panel switch. Would
> leaving it on and turning it on and off from the power supply be
> problematic? (I turn the P/S on and off from an outlet strip.)
>
> Jim N7US
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Please help support this email list: http://www.qsl.net/donate.html
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Robert

Re: K3 power switching

In reply to this post by N7US

>From the assembly manual:
"Always turn your K3 off by pressing the POWER button. Removing DC power while the K3 is on can, on rare occasions, result in corrupted data in the EEPROM requiring you to reload the firmware."

----- Original Message -----
From: N7US <[hidden email]>
To: [hidden email]
Sent: Thu, 06 Jan 2011 13:49:26 -0000 (UTC)
Subject: [Elecraft] K3 power switching

I've been turning my K3 on and off with the front panel switch. Would
leaving it on and turning it on and off from the power supply be
problematic? (I turn the P/S on and off from an outlet strip.)

Jim N7US

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N7US

Re: K3 power switching

I’d forgotten that. Thanks to you and Don.

Jim N7US

From: [hidden email] [mailto:[hidden email]]
Sent: January 06, 2011 08:22
To: N7US
Cc: [hidden email]
Subject: Re: [Elecraft] K3 power switching

From the assembly manual:
"Always turn your K3 off by pressing the POWER button. Removing DC power while the K3 is on can, on rare occasions, result in corrupted data in the EEPROM requiring you to reload the firmware."

----- Original Message -----
From: N7US <[hidden email]>
To: [hidden email]
Sent: Thu, 06 Jan 2011 13:49:26 -0000 (UTC)
Subject: [Elecraft] K3 power switching

I've been turning my K3 on and off with the front panel switch. Would
leaving it on and turning it on and off from the power supply be
problematic? (I turn the P/S on and off from an outlet strip.)

Jim N7US

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Nr4c

Re: K3 power switching

In reply to this post by N7US

Yes. The K3 is very much like a computer and when you press the "OFF"
switch, you initiate a 'shutdown' procedure that eventually turns off
the power. All of your settings get saved to memory so that it will
start-up next time just the way it was when it was shutdown.

...bc nr4c

Quoting N7US <[hidden email]>:

> I've been turning my K3 on and off with the front panel switch.
Would

> leaving it on and turning it on and off from the power supply be
> problematic? (I turn the P/S on and off from an outlet strip.)
>
> Jim N7US
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

Jeffrey Wolf

Re: K3 Power Switching

In reply to this post by N7US

The thing I find inconvenient with the K3's power switching is that it
makes remote operation awkward. I hate to leave the radio on when I go away
for a few days and want to operate remotely. When I do want to operate that
way, I use my Yaesu Mark-V and an AC power controller accessible by computer
(USB) and/or telephone link. Simple codes entered via either route
connection from the turn the radio on or off. (And, yes, the computer can be
controlled in the same way using the telephone link.) Wish I could do this
with the K3.
--Jeff, K6JW

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Don Wilhelm-4

Re: K3 Power Switching

Jeff,

The K3 has an input on the ACC connector called "Remote Power On" on
Pin 8. Pull that pin to ground to turn the K3 on. See the Remote Power
On description in the manual.

There are many computer devices that will provide a switch closure which
can be used for this purpose.

73,
Don W3FPR

On 1/9/2011 2:48 PM, J. Wolf wrote:

> The thing I find inconvenient with the K3's power switching is that it
> makes remote operation awkward. I hate to leave the radio on when I go away
> for a few days and want to operate remotely. When I do want to operate that
> way, I use my Yaesu Mark-V and an AC power controller accessible by computer
> (USB) and/or telephone link. Simple codes entered via either route
> connection from the turn the radio on or off. (And, yes, the computer can be
> controlled in the same way using the telephone link.) Wish I could do this
> with the K3.
> --Jeff, K6JW
>