[Elecraft] K3s 100w Amplifier

[Wayne Burdick]

"Joe Subich, W4TV" <lists at subich.com> wrote:

> On 2015-05-19 5:02 PM, Wayne Burdick wrote:
>> Actually it's four additional pins (was 6, now 10). This applies to
>> P67B.
> 
> Are the pin assignments on P67B changed or is the connecter enlarged?

The connector was enlarged.


> In other words, can an existing KPA3 and KPAIO3 be installed in a K3S
> without damage to either the K3S/10 or the KPAIO3?

Yes.


> What are the new output devices?

That will be clear when the schematic is ready to be posted.

73,
Wayne
N6KR


> 
> 73,
> 
>   ... Joe, W4TV
> 
> 
> On 2015-05-19 5:02 PM, Wayne Burdick wrote:
>> Actually it's four additional pins (was 6, now 10). This applies to P67B. There's a corresponding change to the KPAIO3A board.
>> 
>> Since we changed to gold pins for all of these connectors, we haven't had any further issues with +12 VDC to the amplifier module. These extra pins are just for insurance.
>> 
>> 73,
>> Wayne
>> N6KR
>> 
>> 
>> 
>> On May 19, 2015, at 12:49 PM, John Reilly <reillyjf at comcast.net> wrote:
>> 
>>> I heard a rumor at Dayton that the K3s had two additional pins to handle the current from the RF board, through the riser card, to the 100w amplifier.
>>> 
>>> Can anyone confirm this?
>>>  - 73, John, N0TA
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