[TenTec] Wet ladderline -- Comments on QST report

[Steve Hunt]

Joel,

That'll teach me to read things more carefully - I'll modify the 
conclusions accordingly.

I'm now waiting for some ice/snow conditions ...... but I don't think 
it'll be within the next few days :)

73,
Steve G3TXQ




On 09/08/2013 13:55, Joel Hallas wrote:
> Steve,
>
> Very nice report, indeed. For purposes of comparison to the 100 foot length
> Bob and I used, I would remind folks to multiply your attenuation by 1.7.
> The results seem quite close.
>
> One quibble from your conclusions, however, we did also report significant
> increase in loss with the window line on dry ground. From our report:
>
> "Laying about 95 feet of each line on dry ground with typical cut grass
> resulted in a significant increase in attenuation. This ranged from 3 to 10
> dB at 3.7 MHz to 10 to 20 dB at 28.4 MHz. Interestingly, the open wire line
> had the largest increase, perhaps because the conductors got closer to the
> ground, not being elevated by the grass. Keep in mind that these are matched
> losses; the loss with a 10:1 SWR would be off the charts. This tends to
> validate the long held belief of QST's "Doctor" that running window line
> near lossy objects or burying it in plastic conduit is not a good idea."
>
> So we are even more in agreement.
>
> Westport, CT
>
>