[Elecraft] [KX3] Hi Curr Warning

[Tighe Kuykendall]

Similar issue here for a while.

When I first built the KX3 it calibrated out using the KX3 utility 
fine.  Several months later (Summer 2013) I was at the bench and re-ran 
the calibrations using a power supply and dummy load.  Cal failed on 10m 
with High Current.  I upgraded firmware and checked everything I could 
think of including doing the calibrations manually.  Called Elecraft 
support to discuss and decided I should check all mechanical connections 
inside the KX3.  I disassembled and tightened everything.  Still no luck 
to date with the calibration above 10M.  Luckily I don't operate the KX3 
on 10/6m much, so living with a 5W limit is tolerable.  Although a 
solution would be nice.

Tighe
NK4I


On 12/13/13 11:25 AM, Don Wilhelm wrote:
> The KX3 and all other Elecraft transceivers that use a similar power 
> control mechanism will attempt to maintain the requested power output.
>
> If the power supply voltage drops, the current must increase to 
> maintain the requested power output.
> That often means that the High Current threshold will be reached even 
> though everything is OK.
> So check the supply voltage if you see High Current indicated - 
> especially if operating on an external battery.
>
> 73,
> Don W3FPR
>
> On 12/13/2013 10:59 AM, Gary Hawkins wrote:
>> Hi Gerry,
>>
>> The unit does not appear to be hot.
>>
>> Gary
>>
>> On 12/13/2013 4:20 AM, Gerry leary wrote:
>>> Is the radio getting too hot?
>>>
>>> Sent from my iPhone this time
>>>
>>>> On Dec 12, 2013, at 9:11 PM, Gary Hawkins <gary at hawkins-zhu.com> 
>>>> wrote:
>>>>
>>>> Hi Ron,
>>>>
>>>> Thanks for your response but could you clarify.
>>>>
>>>> On the 12/10m bands I'm not sure of the VSWR of the antenna, but 
>>>> the VSWR reported by the ATU was 1 to 1, so basically the amp was 
>>>> perfectly matched and should have been OK.  Now the fact that I had 
>>>> the radio set for 10W rather than 8W on 12/10m might be an issue if 
>>>> the KX3 was over driving. However, I'd made the assumption that the 
>>>> KX3, knowing it's band, would just limit automatically - that might 
>>>> not have been correct.
>>>>
>>>> Gary KK6GXD
>>>>
>>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html