[Elecraft] K3 Bootup sequence?

[Vic K2VCO]

If you do this, make sure that when you remove the 5v pin 7 is either grounded directly or 
via a resistor. if you let it float, it may inhibit output in that condition.

Yes, I see that Ed didn't do that in his schematic -- maybe it's rig-dependent, but I've 
had this problem.

On 6/25/2013 10:46 AM, Edward R Cole wrote:
> One other way to prevent the K3 from transmitting (it will still key but with no RF 
> output).  Apply 5v to pin-7 of the ACC after placing  TX INH set to HI in the CONFIG 
> menu.  Remove the 5v and the radio will function normally.
>
> http://www.kl7uw.com/TX-INHIBIT.htm
> shows how to use inhibit on VHF bands but not on HF.  A simple modification could be 
> done where the relay is replaced by a toggle switch and eliminate the transistor and 
> BAND and DIGOUT circuitry.  The voltage regulator, 1K resistor, and diode are not needed 
> and can be replaced with a 2.2K to 10K resistor (K3 manual, page 19) connected to 12v 
> thru a toggle switch.
>
> I just boot my computer before powering up the K3 (I am not using the LP Bridge).
>
> 73, Ed - KL7UW
> http://www.kl7uw.com
> dubususa at gmail.com
> "Kits made by KL7UW"

-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/