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Re: [TowerTalk] N Connectors

To: "Tower and HF antenna construction topics." <towertalk@contesting.com>
Subject: Re: [TowerTalk] N Connectors
From: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
Reply-to: "Tower and HF antenna construction topics." <towertalk@contesting.com>
Date: Tue, 09 Feb 2010 22:43:10 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>

Mike Besemer (WM4B) wrote:
> True enough!  All our stuff had no more than 2:1 VSWR, which really helped
> everything survive.  That's hard to accomplish on the low-bands... 160
> especially. 
>   
This makes me wonder what the voltages are when running at the band 
edges with an SWR of maybe 6 or 8:1.  I don't remember what it actually 
is, but I do know I had to be careful where I put resonance (by 
adjusting the length) or my 989C antenna tuner would arc inside when 
only running about 1200 watts or so. I've since replaced it with a 
Palstar AT5K. Now supposed I'm running merrily along at the legal limit 
at the high end of the band with a 6:1 SWR. I wonder what the voltage is 
at the feed point and along the coax back to the AT5K.   Then I end up 
with a great big and loud sneeze.

73

Roger (K8RI)
> I run a 500' horizontal loop and an inverted L on all HF bands (being
> antenna restricted sucks!) and I try not to think about the voltages
> associated with the mismatches I have.  So far, so good!
>
> 73,
>
> Mike
> WM4B
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Roger (K8RI)
> Sent: Tuesday, February 09, 2010 10:17 PM
> To: Tower and HF antenna construction topics.
> Subject: Re: [TowerTalk] N Connectors
>
>
>
> Mike Besemer (WM4B) wrote:
>   
>> Roger,
>>
>> Are you saying you've had crimp N-connectors go bad from running them at
>> 1500 watts on HF?  If so, I'm amazed.  When I was in the Air Force, we ran
>> them at much higher power than that well into the GHz range and NEVER had
>>     
> an
>   
>> issue.  
>> Of course, they were MILSPEC connectors
>>     
> Yes,
>   
>>  crimped with a MILSPEC crimper
>>     
> Yes,
>   
>>  on
>> MILSPEC cable feeding
>>     
> Yes,
>   
>>  MILSPEC antennas.
>>     
> Errrr...Is there such a thing as a mil spec dipole?<:-))  Actually 
> running at the band edges on 160 and 75 with the accompanying high SWR, 
> the voltage gets pretty high.
>   
>>   Perhaps you really DO get what you
>> pay for!
>>   
>>     
> Well, it might depend on how you use them too<:-))
>
> 73
>
> Roger (K8RI)
>
>   
>> 73,
>>
>> Mike
>> WM4B
>>
>> -----Original Message-----
>> From: towertalk-bounces@contesting.com
>> [mailto:towertalk-bounces@contesting.com] On Behalf Of Roger (K8RI)
>> Sent: Tuesday, February 09, 2010 9:12 PM
>> To: Tower and HF antenna construction topics.
>> Subject: Re: [TowerTalk] N Connectors
>>
>>   
>> I use a lot of crimp type N connectors and like them, but just running 
>> the legal limit into the band edges on 160 or even 75 has cost me a 
>> number of them.
>>
>> What I need are standard connectors to fit LMR-600 and that pretty well 
>> limits me to N and UHF.  Finding UHF connectors to fit LMR-600 has been 
>> a chore.  Some of the suppliers no longer even have LMR-600 cable or 
>> connectors listed. So far the only one I've found carrying them has been 
>> the wireman and he's out of stock.
>>
>> 73
>>
>> Roger (K8RI)
>>
>> _______________________________________________
>>
>>
>>
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>>   
>>     
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