[time-nuts] Thunderbolt cabling questions

[bg at lysator.liu.se]

> On Sun, Jun 10, 2012 at 2:50 PM, <bg at lysator.liu.se> wrote:
>
>> ... 3m
>> of antenna cable is no problem. Antenna position is more important than
>> the exact type of antenna. I'd rather have a decent antenna at a very
>> good
>> site, than a very good antenna at a slightly worse antenna site
>
>
>
> 3M is trivial.  30M will work fine too.
>
> I agree about the location really mattering more than anything else.  What
> I did was drill a 2" hole through the roof up from the attic and push a 10
> foot gallanvised iron plumbing pipe up.   The antenna sits on thop ithe
> pipe and is higher then the roof top ridge and then the cable go down the
> center of the pipe.  I pipe flange on top  of the pipe makes a perfect
> mounting platform.   I used a timing antenna comes inside a white pointed
> plastic radome.  These sell for just under $30 on eBay.   Maybe it is
> coincidence or not but the four holes pin the standard pipe flange match
> up
> with the four holes in the bottom of my antenna and there is enough room
> inside the hole in the center for an "N" connector.   It is worth getting
> the antenna "done right" because it is the most important part of the
> entire system.     Those dome type antenna are worth it.  the shape is
> designed to shed both bird poop, and snow.  Birds can be an issue with a
> flat top antenna, no snow here.
> Chris Albertson
> Redondo Beach, California

The Trimble Bullit antenna has a 1" thread that will mate with a plumbing
pipe directly. The F-connector will fit through it. Be a bit careful,
since the pipe will have conical threads you might break the antenna if
using to much force.

--

    Björn