[Elecraft] OT: Feedline Question

[Phil Wheeler]

Hey, and it looks like you are really in 7-land, Wes!

OTOH, I'm the "real W7OX", live in a suburb of Los 
Angeles and have not lived in 7-land (OR/WA) since 
1960; farthest North was Palo Alto when I was at 
Stanford 1963-65.  But 20 years ago we considered 
retiring to Portland very seriously, so I used the 
Gates to get back my original call -- W7UOX -- and 
then shorten it to W7OX.

I like having the call for old times sake. But I 
do wish the prefixes had call area geographic 
meaning as they did in olden days.

73, Phil W7OX

On 4/18/17 12:57 PM, Wes Stewart wrote:
> I'm cursed.  It's bad enough that I've worked (I 
> thought) several stations in DX pileups only to 
> later have the DX say, "Nope, we worked N6WS, 
> not N7WS".  Now my work is attributed to him 
> too.  (Just kidding Jim)
>
> Actually, the article never appeared in QST.  
> Too technical; it went right to the Antenna 
> Compendium.  And as a caveat, I never intended 
> the "wet" numbers to take on mythical 
> properties.  Water most definitely negatively 
> affects ladder lines (or as our European friends 
> say, "chicken ladder line") but it's really 
> really difficult to quantify with precision.
>
> I never did get around to testing the piece of 
> Wireman line that my friend Danny, K6MHE, sent 
> me that was covered in moss. Living among 
> Redwood trees is considerably different from 
> living among Saguaro Cactii.
>
> Wes, the real N7WS
>
>  On 4/18/2017 10:37 AM, Jim Brown wrote:
>> On Tue,4/18/2017 10:10 AM, Guy Olinger K2AV wrote:
>>> Then there is the loss based on number of 
>>> spacers and loss tangent of the spacer 
>>> material modifying the lesser air loss.
>>
>> Below UHF, loss in transmission line is 
>> virtually all due to copper losses unless the 
>> dielectric material is wet or is otherwise made 
>> conductive.
>>
>> Quite a few years ago, N6WS did some excellent 
>> work showing that losses in window line are 
>> greatly increased when it is wet. His work was 
>> published in QST and later included in Antenna 
>> Compendium #6. It should be required reading 
>> for anyone considering window line. He measured 
>> four types of window line and some open wire 
>> line he built himself. Putting some numbers to 
>> it, Wes's measurements showed loss at 50 MHz 
>> increased from about 0.4 dB/100 ft to more 
>> almost 6 dB/100 ft when it was wet. The open 
>> wire line showed no increased loss when wet.
>>
>> 73, Jim K9YC