[Noisebridge-discuss] Need info on upgrading a WiFi antenna for a robot - how does it connect?

[Corey McGuire]

You might call Halted and see if they have adapters in stock.  That is, if
you are interested in instant gratification:
http://www.halted.com/

On Fri, Dec 3, 2010 at 8:30 PM, Gian Pablo Villamil <gian.pablo at gmail.com>wrote:

> Actually, I'm thinking that maybe I should just buy one of these:
> http://www.rfmall.com/CTGY/IPX-RPSMA-PIGTAILS-132MM-COAX.html
>
>  <http://www.rfmall.com/CTGY/IPX-RPSMA-PIGTAILS-132MM-COAX.html>Dealing
> with 1.13mm coax cable might be very very fiddly.
>
>
> On Fri, Dec 3, 2010 at 8:20 PM, Gian Pablo Villamil <gian.pablo at gmail.com>wrote:
>
>> Cool, so I need to strip the pigtail and separate the inner and outer
>> connectors, I guess.
>>
>>
>> On Fri, Dec 3, 2010 at 8:09 PM, Joel Jaeggli <joelja at bogus.com> wrote:
>>
>>> Coax has one wire in the center. The shield of the coax is on the outside
>>> seperated by an insulator and is the second wire.
>>>
>>> Your question is the correct answer.
>>>
>>> Twinax has two wires plus a shield.
>>>
>>> The little snap connector is a hirose u.fl, the outside is The shield,
>>> and the captive pin is the radiator.
>>>
>>> Joel's widget number 2
>>>
>>> On Dec 3, 2010, at 19:55, Gian Pablo Villamil <gian.pablo at gmail.com>
>>> wrote:
>>>
>>> > I'm in the midst of making some significant changes to a robot, which
>>> currently has a built-in WiFi antenna. I'm planning on replacing it with an
>>> antenna from a decommisioned router. I'm planning on taking the RP-SMA jack
>>> and antenna from the router and mounting it on the robot.
>>> >
>>> > The antenna connector is coax, which implies that there are two wires
>>> in it, right? However, the wire going from the WiFi chipset in the robot to
>>> the built-in antenna only has one conductor, as far as I can tell. It
>>> connect to motherboard using one of those little snap connectors, the ones
>>> that look like half a 12V battery connector but a lot smaller.
>>> >
>>> > My question is embarrassingly simple. How do I connect it to the new
>>> antenna? Does the outer part of the coax go to ground, and the inner part of
>>> the coax connect to the antenna cable from the robot?
>>> > _______________________________________________
>>> > Noisebridge-discuss mailing list
>>> > Noisebridge-discuss at lists.noisebridge.net
>>> > https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
>>>
>>
>>
>
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>
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