[Elecraft] K3 transmit audio cuts out

[Don Wilhelm]

Kieth,

Actually APP connectors do not "loosen up over time".  They provide 
positive contact over many, many, many connections/disconnections. If 
the plating on the connector blades is still intact, that is not your 
problem.

However, many seem to have trouble assembling APP connectors correctly.  
I am currently sensitized to this problem because I have repaired 2 
KPA100s in the past week which had this exact problem - the blades of 
the connectors were not securely latched over the spring fingers of the 
housing.
If your APP connector is loose and the cable "falls out", you can be 
certain that it is not assembled correctly.  The blades of the contacts 
must latch over the ends of the spring fingers in the housings.

See page 37, figure 29 in the XV transverter Assembly manual - 
http://www.elecraft.com/manual/Assembly%20Manual%20XV50,144,%20222%20Rev%20D.pdf

73,
Don W3FPR

On 7/28/2012 11:10 PM, Keith Heimbold wrote:
> Don,
>
> I am now starting to think that it is an issue with my power connectors that I am using.
>
> I bought some additional ferrites and put the balun design 1113u in line to take care of RFI but i know believe that the power connectors are a little intermittent at times. I don't always get a solid click when inserting into the back of the K3 or into the power supply line. I like the convenience of those type of connectors but they do seem to loosen up over time.
>
> Thanks again,
>
> Keith
> AG6AZ
>
> Sent from my iPhone please excuse typos
>
> On Jul 28, 2012, at 3:44 PM, "Don Wilhelm" <w3fpr at embarqmail.com> wrote:
>
>> Keith,
>>
>> You could also have a loose connection in your microphone cable. When operating SSB, if there is no audio, there will be no RF output.
>> So you can look at the PTT, the audio, the power supply, and just about every thing else in your station.  Cables are usually the weak link.
>>
>> 73,
>> Don W3FPR
>>
>> On 7/28/2012 5:34 PM, Keith Heimbold wrote:
>>> Gene,
>>>
>>> Great suggestion. It maybe the connector going into the rig or the connectors which I built.
>>>
>>> Thanks,
>>>
>>> Keith
>>> AG6AZ
>>>
>>>
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