[Elecraft] FIXED--was NOT the feedline

[Buck]

Electrical tape, then the self-fusing tape, then electrical tape.  The 
first layer of electrical tape makes it easier to removing the fusing 
tape later

Buck, k4ia
Honor Roll
8BDXCC
EasyWayHamBooks.com

On 6/3/2020 12:58 PM, Clay Autery wrote:
> I've got to get to class, but there are a NUMBER of different methods 
> and procedures that are used.
> 
> Self-fusing tape properly applied covered by top-quality electrical tape 
> to protect the self-fusing tape from UV...
> There are specific points on installation that you want to observe.
> 
> Someone will chime in with deatil or a reference to a procedure...  If 
> not, I will do it later... Class in 3 minutes.
> 
> 73,
> 
> ______________________
> Clay Autery, KY5G
> (318) 518-1389
> 
> On 06/03/20 10:35, Peter Dougherty wrote:
>> No, and I wasn't sure how to accomplish this. It's stainless hardware, 
>> but
>> I'm guessing I should probably wrap the feedpoint up in self-annealing 
>> tape
>> and Scotch 88 just to be safe.
>>
>>   - pjd
>>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net 
>> <elecraft-bounces at mailman.qth.net> On
>> Behalf Of Dave Cole
>> Sent: Wednesday, June 3, 2020 7:27 AM
>> To: elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] FIXED--was NOT the feedline
>>
>> Hi,
>>
>> Is the open end of that feedline where it connects to the antenna
>> weatherproofed?
>>
>> 73, and thanks,
>> Dave (NK7Z)
>> https://www.nk7z.net
>> ARRL Volunteer Examiner
>> ARRL Technical Specialist
>> ARRL Asst. Director, NW Division, Technical Resources
>>
>> On 6/2/20 8:15 PM, Peter Dougherty wrote:
>>> HI all,
>>>
>>> A postscript to the problem. First off, a huge thank you to the many
>> replies received. I was fortunate that the problem was not in the 
>> KPA-1500
>> as I'd originally feared.
>>> Much troubleshooting within the past few days. Originally the amp was
>> "iffy" on the old M-squared 6m5, and problematic (faulting) during 
>> damp or
>> wet weather. This prompted the replacement of both the antenna and 
>> feedline.
>>> The hard faults were still occurring, until it was suggested the Ten-Tec
>> 238 tuner that I was using exclusively for the built-in antenna switch 
>> was
>> now the issue. I took this out of line today, and lowered the tower to
>> fine-tune the LFA's feed point and now everything is humming along just
>> nicely. The KPA-1500 is happy at 1.5 kW and showing an SWR of 1.2 in dry
>> conditions. I will keep my fingers crossed that the wet weather 
>> expected in
>> the next day or so won't bother it all that much.
>>> The final step was to move the 6m feedline from the secondary inlet 
>>> box to
>> the main antenna switch on the big tower. The downside here is I now 
>> have an
>> additional 70 feet of BuryFlex in the line, so I'm guessing a total of 
>> about
>> 1.5 to 1.7dB of feedline loss. This is something I would like to 
>> address in
>> the future with an eye to dropping it below 1dB.
>>> Screencaps:
>>> https://www.dropbox.com/s/1y4vyd17pbgq8ty/6m%20via%20the%20antenna%20s
>>> witch.png?dl=0
>>>
>>> And
>>>
>>> https://www.dropbox.com/s/5x8n0bum4nwcxqp/6m%20LFA%20-%20SWR%20after%2
>>> 0tuning.png?dl=0
>>>
>>> And for the balun discussion, this is what's in place, before the
>>> double-walled heat-shrink was applied:
>>> https://www.dropbox.com/s/18pgthl67rtq3bl/2020-05-31%2017.51.08.jpg?dl
>>> =0
>>>
>>>    - pjd
>>>
>>> ______________________________________________________________
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>>> dave at nk7z.net
>>>
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