You will have: 16.23 db loss at the cable length minus connectors using
LMR 400

LMR 600 will give you a bit better at: 10.89 db

Perhaps use LMR 600 for a shot that big, otherwise, I would go PoE. 

-Cameron





-----Original Message-----
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of RickG
Sent: Tuesday, September 22, 2009 12:20 PM
To: WISPA General List
Subject: Re: [WISPA] license for amplifier?

Ya, because this is an "upgrade", I looked at this from the wrong
direction.
So, do you think I can make up for a 150' cable with just a radio?
-RickG

On Tue, Sep 22, 2009 at 12:16 PM, Josh Luthman
<j...@imaginenetworksllc.com> wrote:
> Rick,
>
> Sounds like a Job for Ubnt or MT.
>
> $200 from Ubnt and a pair of antennas and you're done.
>
> Josh Luthman
> Office: 937-552-2340
> Direct: 937-552-2343
> 1100 Wayne St
> Suite 1337
> Troy, OH 45373
>
> "When you have eliminated the impossible, that which remains, however
> improbable, must be the truth."
> --- Sir Arthur Conan Doyle
>
>
> On Tue, Sep 22, 2009 at 12:13 PM, jp <j...@saucer.midcoast.com> wrote:
>
>> Long ago we used amps to overcome cable loss, before there was a good
>> choice for POE or IF based systems. Every single one of them either
>> failed or went flaky (YDI and other like units) I'm so distrustful of
>> them, I wouldnt even sell them on ebay.
>>
>> When I have issues with the equipment at the top, it's usually the
>> equipment, not because it's up high. If it's reliable to start with,
>> properly protected, it will provide reliable service from up high.
Put
>> equipment that you need to tinker with, unproven equipment, untested
>> used equipment, etc... You will have issues.
>>
>> On Tue, Sep 22, 2009 at 11:59:48AM -0400, RickG wrote:
>> > I've only lost one amp over the years as opposed to many issues
with
>> > equipment at the top.
>> > -RickG
>> >
>> > On Tue, Sep 22, 2009 at 11:48 AM, jp <j...@saucer.midcoast.com>
wrote:
>> > > Big thank you to L-com.
>> > >
>> > > Use a POE based backhaul product to avoid cable loss. The amp
will also
>> > > hurt your noise floor by amplifying interference/noise as well.
>> > >
>> > > If you are concerened about unreliability of having electronics
atop
>> the
>> > > tower with regard to a POE radio solution, an amp is electronics
atop
>> > > the tower, so that argument doesn't hold water.
>> > >
>> > >
>> > > On Tue, Sep 22, 2009 at 10:59:11AM -0400, RickG wrote:
>> > >> I am planning to install a 5Ghz backhaul from my main tower to a
>> > >> remote. It will have the antenna on the top, 150' of LMR-400 and
the
>> > >> radio at the bottom. To make up for the loss, I ordered a 500mw
amp
>> > >> from L-Com. Unfortunately, they cancelled the order saying I
need a
>> > >> HAM license to purchase it. I thought unlicensed freqs dont
require a
>> > >> license?
>> > >> -RickG
>> > >>
>> > >>
>> > >>
>>
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