[Elecraft] KX3 s/n 1965 on the air - and a power-up question

[kk7p4dsp at gmail.com]

Sounds like the ground return in the power connector wiring is open.

73,

Lyle

Sent from my iPad

On Sep 28, 2012, at 9:43 PM, Michael Aiello <n2htt.mike at gmail.com> wrote:

> I'm very excited to get my new KX3 on the air, and during my initial
> exploration of the rig, I discovered something unexpected. It appears
> that the rig will not power on if there is no antenna attached. I
> noticed this first when I disconnected the coax to change the antenna
> setup while the rig was on and in receive mode  - the rig immediately
> shut down. Then with the antenna disconnected I tried to power up - no
> response. After reconnecting the antenna, everything behaved normally.
> 
> I did not find any mention of this in the manual. I don't have an ATU
> installed, perhaps that might have an effect.
> 
> I am running from an external 20A power supply (a venerable TenTec
> 252M), and the load is RG 8X connected to an LDG Z-11 autotuner,
> feeding an outdoor dipole.
> 
> If this is normal behavior, does it have implications for doing
> firmware updates? Must the rig have some kind of load attached in
> order to power on to connect to the computer?
> 
> In all other respects everything is working fine and I am very pleased
> with the rig. My first CW contact was Bulgaria on 10w from the east
> coast!
> 
> 73
> Mike N2HTT
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