[Elecraft] KPA-1500 failing on 160...AGAIN!

[Jeff Blaine]

It's from my head.  I have a BVT - it's DC so the 4K is a DC claim.  I 
BVT cables used here in the shack as a fast way to ensure I don't have 
some microscopic wire or filing or whatever down in a connector - stuff 
like that is a nightmare to troubleshoot.

At one point I tried to use a PL259 for a HV run but it arced from time 
to time at 4.2KV.

So at least in this shack, a PL259/SO239 is rated for well under 4KV.

73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com


On 9/27/19 3:14 PM, Walter Underwood wrote:
> Few of us can guarantee dry air for our antenna connections. Where is this data from?
>
> For the question “Has anyone tested them?”, I expect that Amphenol tests to the published specs. Those tests would be over the entire temperature range in the data sheet. If you visit the data sheets I linked for the UHF and type N connectors, you might notice that type N has spect for many more attributes than UHF.
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
>> On Sep 27, 2019, at 11:04 AM, Jeff Blaine <KeepWalking188 at ac0c.com> wrote:
>>
>> PL259/SO239 BDV is around 4KV in dry air.
>>
>> 73/jeff/ac0c
>> alpha-charlie-zero-charlie
>> www.ac0c.com
>>
>>
>> On 9/27/19 1:01 PM, john at kk9a.com wrote:
>>> 5000 watts is 500 volts rms with a perfect antenna system. I suspect that PL-259 connectors really can withstand much more than 500 volts. Has anyone tested them?  My station has a mixture of UHF, N and DIN connectors and all have worked perfectly for 1500 watts HF.  If PL-259s are failing they are either poor quality connectors or there are serious antenna issues causing excessive voltage.
>>>
>>> John KK9A
>>>
>>>
>>> Walter Underwood K6WRU
>>>
>>> Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
>>>  From the Amphenol data sheet, UHF connectors are rated for 500 V peak, so they are marginal for use at that power level. Type N connectors are rated at 1500 V peak.
>>>
>>>
>>> wunder
>>> K6WRU
>>> Walter Underwood
>>> CM87wj
>>> http://observer.wunderwood.org/ (my blog)
>>>
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