[Elecraft] Re: K3 Key-down on power-up [Solution?]

[John H Gibson]

Wayne,

Instead of using an intial time delay, why not force the K3 to wait for a high-to-
low transistion on the key line before it first transmits?

73,
John, no8v

---- Original message ----
>Date: Fri, 27 Jun 2008 19:51:01 -0700
>From: wayne burdick <n6kr at elecraft.com>  
>Subject: [Elecraft] Re:  K3 Key-down on power-up [Solution?]  
>To: Elecraft Reflector <elecraft at mailman.qth.net>
>
>Dave,
>
>I wanted to run a possible solution past you.
>
>I could prevent the rig from being keyed (by any method) during the 
>first couple of seconds that it's powered up. Instead, it could detect 
>this case, and display a repeating message (something like: "KEYLINE IS 
>ACTIVE") until you either remove the source of the keying or turn power 
>off.
>
>Thoughts on this?
>
>73,
>Wayne
>N6KR
>
>
>Dave Hachadorian, K6LL wrote:
>
>> I've got my K3 set up for cw on Field Day with a laptop usb
>> port driving a usb to serial converter. Rig control and cw
>> keying are done over the serial cable, using the K3's
>> built-in ability to send cw from pin 4(?) of the rs-232
>> cable.
>>
>> Everything works fine, but I got quite a scare when I turned
>> on the K3 and it came up keyed-down 120 watts into no
>> antenna.  It seems that if the laptop is not running the
>> logging program, rs-232 pin 4 can very well be in a key-down
>> state.
>
>
>---
>
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>
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