[Elecraft] problem with K2, KAT100 and K2100PA combo

[Jay Rutherford]

Wayne,

Years ago, on my 2000 K2, I discovered that it was possible to interchange the ATU plug to the main board with another one of the same size, with very bad results. I applied gold paint to one of the pair in the hopes of avoiding ever interchanging them by accident. So far, so good.

73
Jay K3BH

On Tue, Jul 12, 2022, at 21:37, Wayne Burdick wrote:
> We've used APP connectors for over 20 years on Elecraft products. When 
> properly assembled and inserted they're very reliable, not to mention 
> intuitively color-coded. There is nothing covert about them.
>
> I may be slightly biased by my fear of starting over with something 
> else, with the resulting incompatibilities, discontent, and non-deleted 
> expletives.
>
> W
>
>
>> On Jul 12, 2022, at 6:26 PM, Jay Rutherford <k3bh at arrl.net> wrote:
>> 
>> Sorry to flog this poor horse once more. My XT90 AMASS connector failed due to not being completely inserted with the mate on a 52volt e-trike. It burned up one of the conductors inside the female plug.
>> 
>> I have never had a failure of an Anderson powerpole in many years of using them. It is easy to see when they are not completely connected.
>> 
>> Just to give a different perspective on the subject.
>> 
>> 73,
>> Jay K3BH
>> 
>> On Tue, Jul 12, 2022, at 21:19, jerry wrote:
>>> I had a PowerPole fail on me once.  Dirt or corrosion on the one flat 
>>> contact.
>>> Once was enough.  Back in the day, I had standardized on double banana 
>>> plugs.  In 50 years of ham radio, I NEVER had one fail on me in any way. 
>>>  Only trouble with the double bananas is they're not keyed for polarity. 
>>>  I was always *very* careful about that.
>>> 
>>>   As a electronic bench tech back in the 70's, I had a lot of experience 
>>> with test sets and connectors enduring thousands of cycles.  The very 
>>> best - most reliable - connectors all had a round pin in a round hole.  
>>> All hail Augat machine sockets!
>>> 
>>>   The AMASS connectors feature a round pin that plugs into a round hole. 
>>>  It has just the right spring tension.  They are polarized - you can't 
>>> plug them in backwards.  They are popular with the RC drone crowd, but 
>>> are also making it into other equipment.
>>> 
>>>    I am using AMASS XT90 connectors on my kilowatt LDMOS linear project.
>>> 
>>>                      - Jerry, KF6VB