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

[Gian Pablo Villamil]

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
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.noisebridge.net/pipermail/noisebridge-discuss/attachments/20101203/66c83f42/attachment-0003.html>