>I have been granted a variance for 57ft of tower and antenna, not bad
> considering the town zoning permits no antennas of any kind. I am going to
> put up a Tashjian/Tri-Ex LM-354 with an OptiBeam OB11-3 mounted 3ft above
> it.
First, congratulations on the variance.
I can't comment on the Yaesu rotator as I know nothing about them. I'm
running over 200 foot of cable to a PST61 which works well.
>
> And on a side note; is there any significant advantage to using 9913 coax
> over RG-213 at these lengths when operating at 10-20m frequencies?
I'd stay as far away from 9913 as possible if they still use the quasi air
core. There are those who say all you have to do is make sure the ends are
properly sealed to avoid problems and I used to be one. I had nearly a
thousand feet of the stuff installed here for years with no problems. Then
the old tower took a lightning hit which removed the sealant and within 15
minutes I had water running out of one rig onto the desk. The rig survived,
the top of the desk didn't. I have since replaced all of the 9913 with
LMR-400 which I am now replacing with LMR-600. Both are available for some
reasonable prices depending on where you go. I think I paid $1.29 a foot for
the LMR-600. Good quality crimp on connectors are available for the 600 and
400 for about $5 USD give or take a tad. BTW: Except for the one run the
9913 was still good, even though some of it had been up over 15 years with
no problems, I gave most away with the rest getting pitched. It just wasn't
worth the risk to me.
One correction, I remember the run to the vertical on the end of the shop
appears to be 9913 and I just happen to have that down. It's only about a
70' to 80' run so I may use some of the LMR-400 from the big tower I'm
replacing with 600 rather than installing LMR-600 for such a short run even
if it does have 6-meters at 750 watts on it. If it'd quit raining long
enough, I'd go out and see if I can get enough without having to climb the
big tower very far.
73
Roger (K8RI)
>
> Thanks for any insight.
>
> Peace
> James - AD1L
>
>
>
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