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Hey Guys,

I have done some searching around and even posted in one of the other posts but so far have not managed to get an answer to my question. And knowing that your all a helpful bunch was just wondering if anyone can answer this.

1) I has wondering if connecting the coax to the empty connector (op on the pic) is possible and would that be the ideal spot for the coax.

2) I have found a post on one of the other forums (that shall remain nameless) and the advice was to cut the trace just before the hirose connector and use the ground pad just next to the trace.



Now would that be usable at all, if the connector is used for testing only?

Any help would be much apprecieated.

Regards,
p0lski

P.S. i have searched quite few times but could not find anyone with any modded wg511t cards or anything quite similar.

those raditator's look slightly different than each other. Likely the one with the connector is 2.4ghz (b/g), and the other is 5.2(a).

That connector looks like a Hirose MS-156. If you can get some measurements, I would be able to tell you for sure....

g

hey thanks for the reply.

btw, i thought that the netgear wg511t was only b/g?

in any case, where should the antenna be connected to?

the top pads? or the hirose connector ?

Cheers,
p0lski

P.S. just took anther 511T and it looks a bit diff. i'll post the pics soon.
i'll measure that hirose as well.

Ok, here it is.



Thats the other card, seems a bit diff from the other one, in any case.

any ideas on the external antenna for that?

And is the aerial that the hirose connector is on just for testing or whats the go with that?

Cheers, Again!!!
p0lski

p0lski wrote:hey thanks for the reply.

btw, i thought that the netgear wg511t was only b/g?

in any case, where should the antenna be connected to?

the top pads? or the hirose connector ?

P.S. just took anther 511T and it looks a bit diff. i'll post the pics soon.
i'll measure that hirose as well.

You are right, (I have ABG on my brain these days).

The connector looks like a hirose ms-156
(note: not a hirose u.fl)

You can use that connector, but realize it is not designed for continued attaching/detaching. I think they are rated for a 100 insertions or so.

here is a close up of a ms-156:

Ok so i take it that the aerial that the connector is on is a right one to use.

Would i have to de-solder the cap just past the aerial or can i get away with just a connector.

As far as the connector goes its ok, im looking for a permanent pigtail so im not worried.

Do you know any places that sell the ms-156 pigtail's? That you would recommend?

Also if i still wanted to solder on some coax (every dB is precious) were would be a good spot to do it.

Thanks for all ya help grcore, you are really helpful,

In the meantime i'll see if anyone on ebay has any pigtail for those

Cheers,
p0lski

p0lski wrote:Would i have to de-solder the cap just past the aerial or can i get away with just a connector.

No, the jack has a built in switch that disconnects the internal antenna when you plug in your connector.

p0lski wrote:Do you know any places that sell the ms-156 pigtail's? That you would recommend?

Try one of the WISP equipment providers, google is your friend.

p0lski wrote:Also if i still wanted to solder on some coax (every dB is precious) were would be a good spot to do it.

You can solder one on if you want, I don't reccomend it. Its harder to do than it looks. The best place from a db standpoint would be as close to the radio as possible. You are on your own with that......

g

Thank you grcore,

I'll look around for some pigtails, i'll post the finished mod once i'm done.

Not worried about the soldering, have done heaps of solder work, mainly on PS2's

In the meantime, i'll checkout the ms-156 spec sheet and see if i can desolder it and slap some coax in it's place

P.S. I had a look at a couple of wifi equipment suppliers that i have found through this forum but they dont seem to have a pigtail to fit, i'll keep searching tho.

Cheers,
p0lski

Hmmm no luck, cannot trace the pigtail for that connector,

Last question, which aerial is a tx/rx and which it the tx only ??? and which one should the antenna be connected too ???

Cheers,
p0lski

Last question, which aerial is a tx/rx and which it the tx only ??? and which one should the antenna be connected too ???

802.11a cards have no external antenna, so I would think the side with the connector would be the 802.11b/g. TX/RX is the same antenna.

wiresalot wrote:802.11a cards have no external antenna, so I would think the side with the connector would be the 802.11b/g. TX/RX is the same antenna.

The card is a WG511T b/g ONLY no "a" ... :|

Question was, i have red somewhere that only one aerial is used for both reception and sending, question is which one ??? is there a standard ???

I mean, correct me if im wrong but i thought that one aerial is used for both rx/tx and the other tx (maybe its the other way around 2 recieving one sending)

So would that mean that if an aerial is connected to an rx end only would that pretty much kill the performance ???

Cheers,
p0lski

Edit: Typo

The card is a WG511T b/g ONLY no "a" ... :|

From the board it looked like a "a/b/g/" card my appologies.. I see what I can find.

wiresalot

If I recall it is 1 tx 2 rx. With 802.11 the dual antenna setup is/was commonly referred to as "receive diversity"

However WiMAX utilizes both tx & rx diversity.

As to which antenna is the transmit antenna. Logic would tell me that if the card has an RF connector of some type in the path then that would be the transmit antenna.



If I am mistaking I'm sure I'll be corrected.

God of Wifi himself,

Thank you for the reply wrzwaldo

I'll unsolder the cap on the second aerial (without the connector) and see if i can still use the card with my AP.

As to that hirose connector considering that i havent been abe to find a pigtail, what would be a good location for some coax, and are all 4 pads around the connector ground pads with the middle 2 for the pole ???

If someone can mark that second pic of mine with any suggestions i'll try that out.

Cheers,
p0lski

P.S. Missed out on the Airlink cards :| no longer on sale, bummer. Did the 108G Airlink card has the internal connector like the 54G?

I don't want to piss anyone off here but it is impossible for antanna 1 to tx and 2 to rx since both antennas are not connected to the radio at the same time...There are 2 switches in the circuit 1 switch is used to select the antenna with the highest gain and the other switch is in the radio circuit to alternate between rx and tx...802.11 b/g cards can't rx and tx at the same time.This is embedded in the 802.11 standard. My hypothisis is that connector is a sniffer aka a test port for checking RF power,tuning and checking the intermod. If you look closely at the pics you will see both antennas offset on certain angles.This is for polarization of the antennas and helps if the AP antenna is in a different phase.In order to get around the antenna switch you either have to remove the switch and solder a pigtail at where the antenna trace connects to the switch and what i mean is the antenna trace before the switch where it is 1 single trace coming from the radio before they split at the switch.There sould be a way to tell the firmware to select and use only 1 antenna but you would have to research and find that out for yourself...