[Elecraft] KPA1500 LOW GAIN FAULT

[hawley, charles j jr]

I do mostly use good adapters to bnc, but really, as I tighten to snug, then wiggle, the barrel turns farther, each time I wiggle. I think the points nestle down in the grooves a surprising amount. Try it.

Chuck Jack 
KE9UW

Sent from my iPhone, cjack 

> On May 1, 2019, at 1:36 PM, Bob McGraw K4TAX <rmcgraw at blomand.net> wrote:
> 
> Yes but those are  Amphenol connectors.   Many "good looking" connectors  we buy today have really poor plating and poor machining tolerances.   Thus all "look alike" connectors aren't the same.   10 in a bag for $10..........no thank you.
> 
> 73
> 
> Bob, K4TAX
> 
> 
>> On 5/1/2019 1:32 PM, Michael Blake via Elecraft wrote:
>> I agree with your process Chuck. I have never read an Amphenol document that suggests anything other than hand tight.
>> 
>> Since the barrel is knurled and has no flats for a wrench it seems certain that a wrench was not what the designer had in mind.
>> 
>> 73 - Mike - K9JRI
>> 
>> 
>> 
>>> On May 1, 2019, at 2:19 PM, hawley, charles j jr <c-hawley at illinois.edu> wrote:
>>> 
>>> I don’t tighten pl259s with pliers. I wiggle the plug so it sets into the mating grooves while tightening it with my fingers and never had them get loose. I think that’s where folks go wrong...when the plug doesn’t set into the grooves. I almost need pliers to remove the plug when disconnecting it. At least 60 years so far this works...
>>> 
>>> Chuck Jack
>>> KE9UW
>>> 
>>> Sent from my iPhone, cjack
>>> 
>>>>> On May 1, 2019, at 11:46 AM, Jim Brown <jim at audiosystemsgroup.com> wrote:
>>>>> 
>>>>> On 5/1/2019 9:08 AM, Ron Durie wrote:
>>>>> Tightening inside PL259's with pliers is not desirable, because each Hams
>>>>> definition of "SNUG" occurs at different Torque levels.
>>>>> I want to use my hands to screw them on and off.
>>>> You may like that, but mother nature likes them tight. And she always wins.
>>>>>  Also, when you have SO239 chassis mounted "Round" connectors (using one
>>>>> large lock washer), then pliers will loosen them every time.
>>>> I'd call that equipment junk.
>>>> 
>>>> 73, Jim K9YC
>>>> 
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