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Groups > sci.electronics.misc > #4766

Re: What's topping this power pole?

From Jeff Liebermann <jeffl@cruzio.com>
Newsgroups sci.electronics.design, sci.electronics.misc
Subject Re: What's topping this power pole?
Date 2016-03-17 09:12 -0700
Message-ID <gfllebl4frffdfhbj06f6i78su4bv0drj6@4ax.com> (permalink)
References <0001HW.1C99E3A8000AE8321150483CF@news.eternal-september.org> <mcmurtrie-A22DBD.23183516032016@news.sonic.net> <mihleblrkeuaqj82962b071m4qh44o78l1@4ax.com> <e5ilebp4k9660jd2d0fv6bjr78m6jil150@4ax.com>

Cross-posted to 2 groups.

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On Thu, 17 Mar 2016 11:11:01 -0400, DecadentLinuxUserNumeroUno
<DLU1@DecadentLinuxUser.org> wrote:

>On Thu, 17 Mar 2016 08:07:45 -0700, Jeff Liebermann <jeffl@cruzio.com>
>Gave us:
>
>>Very nicely done.  Nothing like that in Santa Cruz yet.  I have my
>>doubts that anyone would install a 60 degree per sector antenna that
>>small with 6 very long coax cables possibly going to a nearby
>>building, but it's possible.  The RF hazard sign is the clincher.
>>However, what is inside the 4 boxes hanging from the pole?  Telco
>>backhaul?
>
>  Could also be non-std comms for the local transit company.

With six coax cables and an equal number of antennas?  I don't think
so.  However, I might be wrong about the 60 degree sectors.  It could
be 120 degree sectors, with two antennas per sector, one vertically
polarized, the other horizontal for MIMO.  Or maybe 3 different
service providers sharing the same pole as in DAS.

These are what I'm used to seeing for small cell antennas:
<https://www.google.com/search?tbm=isch&q=small+cell+antenna>
Note that they're better looking, usually side mounted, and larger.  I
used to live off Meridian in San Jose.  Maybe I'll give it a visit and
get a closer look at the antenna.  I can't believe the shoddy
installation.

>  In SD are the rail line and bus line had repeaters all over the place.

Yeah, but they run VHF (150MHz) and UHF (460MHz) systems, which use
bigger antennas.

>  It was called something or other 'mesh'.

I hate mesh networks (for wi-fi).  Details on demand.
-- 
Jeff Liebermann     jeffl@cruzio.com
150 Felker St #D    http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann     AE6KS    831-336-2558

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Thread

What's topping this power pole? DaveC <not@home.cow> - 2016-03-16 11:55 -0700
  Re: What's topping this power pole? DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2016-03-16 15:00 -0400
    Re: What's topping this power pole? DaveC <not@home.cow> - 2016-03-16 12:04 -0700
      Re: What's topping this power pole? DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2016-03-16 16:13 -0400
  Re: What's topping this power pole? Martin Riddle <martin_ridd@verizon.net> - 2016-03-16 15:13 -0400
    Re: What's topping this power pole? rickman <gnuarm@gmail.com> - 2016-03-16 15:26 -0400
  Re: What's topping this power pole? dplatt@coop.radagast.org (Dave Platt) - 2016-03-16 12:42 -0700
  Re: What's topping this power pole? Jeff Liebermann <jeffl@cruzio.com> - 2016-03-16 19:46 -0700
    Re: What's topping this power pole? DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2016-03-17 02:23 -0400
      Re: What's topping this power pole? Jeff Liebermann <jeffl@cruzio.com> - 2016-03-17 14:38 -0700
      Re: What's topping this power pole? DaveC <not@home.cow> - 2016-03-21 23:28 -0700
    Re: What's topping this power pole? Neon John <no@never.com> - 2016-03-17 13:26 -0400
      Re: What's topping this power pole? Jeff Liebermann <jeffl@cruzio.com> - 2016-03-17 14:24 -0700
  Re: What's topping this power pole? Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2016-03-16 23:18 -0700
    Re: What's topping this power pole? DaveC <not@home.cow> - 2016-03-17 00:47 -0700
    Re: What's topping this power pole? Jeff Liebermann <jeffl@cruzio.com> - 2016-03-17 08:07 -0700
      Re: What's topping this power pole? DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2016-03-17 11:11 -0400
        Re: What's topping this power pole? Jeff Liebermann <jeffl@cruzio.com> - 2016-03-17 09:12 -0700
    Re: What's topping this power pole? Neon John <no@never.com> - 2016-03-17 13:33 -0400
      Re: What's topping this power pole? DaveC <not@home.cow> - 2016-03-17 11:03 -0700
  Re: What's topping this power pole? DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2016-03-17 02:36 -0400
  Re: What's topping this power pole? mixed nuts <melopsitticus@undulatus.budgie> - 2016-03-17 12:36 -0400
    Re: What's topping this power pole? DaveC <not@home.cow> - 2016-03-17 10:12 -0700
      Re: What's topping this power pole? Jeff Liebermann <jeffl@cruzio.com> - 2016-03-17 13:47 -0700

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