Router Antennas
 

Does anyone know what advantage I would get from using large antennas on my router? I have ordered 2x 16dBi antennas and was wondering what difference it will make in terms of wireless range. They're 38cm in length and omni-directional.

Thanks!

Re: Router Antennas
 

you should notice better coverage.

which product have you brought? and which router are you fitting them to? whats the struture in which its going to be used like? what are you trying to achieve?

Re: Router Antennas
 

I've bought 2 of these: http://bit.ly/UPIng9

I will be fitting them to a DLINK DIR-615 and want to eliminate the dead / weak spots in my house. Currently when you go to a corner of the house the signal drops quite bad and becomes slow.

Re: Router Antennas
 

have you checked whether the 615 you have or rev. has the ability for the owner to simply unscrew the antennas off? don't pull or the hard wire will come out with it.

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I will have to check on Monday, but if not will it be as simple as to de-solder the old antennas or a little more complicated?

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more complex and also could prove a problem for the router itself (over heating)

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Revision D2 as U.FL connectors for replacement antennas/pigtails, revision D4 has the antenna cable soldered directly to the mainboard.

Large antennas focus the signal in one direction. Indoors, it's pretty pointless as most of the signal is reflected, and even if it weren't it'd only work well if you had a wide, flat residence.

You'd also be breaking ETSI regulations, but who cares about those, right?

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Is it the antennas that could cause overheating or using the soldering iron on it?

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Bollocks.

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wont it overheat when setting are tweaked to max out the antennas?

---------- Post added at 23:13 ---------- Previous post was at 23:11 ----------

anyway never fear qas is here. ask him, he knows everything there is to know about the 615.

Re: Router Antennas
 

Ok qas, if the antennas are maxed out will the router overheat and will my health be at risk from such large antennas?

Re: Router Antennas
 

Max out antennas? What are you on about?

Router outputs fixed power. Antenna points it in a certain direction. Different antenna points it more precisely in a certain direction.

Nothing to overheat.

Though if you short the antenna connectors it probably won't like that, but all you'll get then is crappy performance until you connect them properly.

Only revisions D2 and D4 (the Virgin Media ones)

That said I still haven't managed to get the ethernet, wireless, hardware NAT and mesh networking to work on it at the same time. I kinda gave up and I moved onto more expensive kit.

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The antennas I got say they're omni-directional and I have the D2 version.

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Omnidirectional in the horizontal plane. Probably as omnidirectional as a pancake in the vertical plane...

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Thank you

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i lol'd. then lol'd again when I noticed no one noticing!!!
http://blog.lib.umn.edu/meyer769/psy_1001/giggle.jpg

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I am just wondering, will I need "tails" to hook the new antennas up since the ports are on the PCB?

If so, could you please advise which tails will be needed? Thank you in advance :)

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Is that right? I thought with dd-wrt you could increase to power output to the antenna?

Re: Router Antennas
 

Not any further than it is designed to go.

The relevant point is the antenna has no effect on the transmit power of the router.

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And more interference from surrounding users as you will now be able to pick up more distant WiFi routers.

A smaller aerial will keep them below the noise floor and work fine as long as you're above it by a margin.

Re: Router Antennas
 

That depends what way they're pointing.

A higher gain antenna will pick up more interference from one direction and less from another. This is why directional antennas (omnidirectional antennas are really directional antennas in one axis) are used to reduce interference.

The same applies to legitimate signal from your own devices.

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So the router doesn't output fixed power. Agree the router has a power limit but it can be adjuster beyond the design parameters.

I thought antennas only affect the gain and therefore impact the signal

Re: Router Antennas
 

Correct, but it can increase the ERP or effective radiated power which is more relevant in path loss calculations.

---------- Post added at 19:23 ---------- Previous post was at 19:15 ----------

An omnidirectional aerial in an ideal world has a circular radiation pattern when viewed from directly above.
When viewed from the side, it's a circular lobe shape.

Re: Router Antennas
 

Can anyone advise me on which tails to get? The connectors are tiny

https://www.cableforum.co.uk/images/...2012/12/35.jpg

Re: Router Antennas
 

You are aware that tinkering with your Superhub in any way is in breach of the terms and conditions of your contract as one with holes in it is not acceptable if you have to call out an engineer for any reason.

Buy a N router and use modem mode much simpler.

Re: Router Antennas
 

you are aware the OP is tinkering with a D-Link 615 and not the SH ?

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Then why not just fit some screw on 9db antennas instead, much easier as it gives extra range and speed in many cases.

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because the OP has the rev. that hasnt got the ability to screw off and on antennas.

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Not a nice router in that respect but I fitted 3 on my Edimax and it works fine, pity it is not that easy.

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Agree'd, it was literally as simple as you describe with my old DIR-301, but unfortunately not with the DIR-615 D2

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No, they cannot be adjusted beyond design parameters.

The interface may allow you to enter arbitrary numbers beyond design parameters but the chip will not obey it. In the case of the DIR-615 the default transmit power is 18dBm and the maximum it will ever go to nomatter what you try to set is 20dBm.

Signal != amplifier output power

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There are some DIY option to direct the signal.

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Yes, ERP (or EiRP) is relevant for path loss calculations but irrelevant for determining if you are going to overheat the router. That's what they were suggesting would happen from fitting bigger antennas...

A 2dBi 1/4 wave dipole may be circular lobe shaped from the side but not a 16dBi.

A 12dBi looks like the attachment below.
https://www.cableforum.co.uk/images/...2012/12/20.gifhttps://www.cableforum.co.uk/images/...2012/12/21.gifhttps://www.cableforum.co.uk/images/...2012/12/20.gifhttps://www.cableforum.co.uk/images/...2012/12/21.gif
A 16dBi like the OP is talking about (if it really is, because that is a ludicrous claim) would be even more flattened.

Re: Router Antennas
 

http://www.wikihow.com/Boost-a-Router-Signal

http://www.apartmenttherapy.com/boos...with-pr-140195

http://www.wikihow.com/Increase-the-Range-of-Your-Wifi

Re: Router Antennas
 

Learn to read. That's what he's already doing.

---------- Post added at 21:31 ---------- Previous post was at 21:30 ----------

None of the DIR-615's have the ability to screw off and on antennas.

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Who really cares as it is obvious you cannot read or you would not have missed my answer to Thenry and as for the D Link again who cares buy another that can be altered, try getting your own life.

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I can read perfectly fine, that's why I did post moronic nonsense to begin with.

We were having a perfectly decent conversation in this thread that had nothing to do with you until you came along and derailed it with irrelevant horseshit like you always do. And you tell me to get my own life? As always, you first.

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the manual says they are. obviously this is wrong for some versions but all of them?

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No need to post anything moronic as you are one oddly enough, the proof is in the way you have to cyberstalk other posters truly a sad person.

Do also check out the rather helpful manual which is a fault on D Link's side maybe you could also stalk them.

You just like to try Yan king my chain but always fail.

You could also post here about it as well D Link Forum or even to D Link as it clearly states HERE removable but a stalker dislikes facts as it gets in the way of their perception of reality.


https://www.cableforum.co.uk/images/...2012/12/66.png

Re: Router Antennas
 

Which are range tested results and all turn to pants once inside someone's house.

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I guess we'll just see how it turns out. Worst case is that it doesn't work and I won't be any worse off since the router only cost be £5.30 and best case is that I'll have better performance! =)

Btw has anyone heard of the router company called H3C?

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which product of theirs are you looking at?

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None in particular, I just saw one of their routers today and it looked pretty impressive, it had 6 antennas, 3 for 2.4GHz and 3 for 5GHz. I've tried to find information about it but can't find anything (don't have the model number as it was mounted on a wall).

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alright questions.. wheres this router going? whats its purpose? whats the area size you want wifi to cover? whats the building struture like?

Re: Router Antennas
 

Which manual?

---------- Post added at 13:49 ---------- Previous post was at 13:48 ----------

Heh, that much we can agree on...

---------- Post added at 13:52 ---------- Previous post was at 13:49 ----------

Pfft, Netgear WNDR3700 has 8 antennas.

Cisco 2602i's have only 4, but all 4 are simultaneous dual-band and with some Cisco vector beamforming, makes for some fun results. Probably outperforms those 6 by a mile (though I haven't actually played around with ours yet, the 1142's were disappointing...)

---------- Post added at 13:54 ---------- Previous post was at 13:52 ----------

Never. Personally I'd go for Meru or Extricom myself.

Re: Router Antennas
 

UK Revision B has it stated > http://www.dlink.com/uk/en/support/p...nual_EN_UK.pdf

UK Revision D hasn't > http://www.dlink.com/uk/en/support/p...4_01_EN_UK.pdf

UK Revision H hasn't > http://www.dlink.com/uk/en/support/p...4_01_EN_UK.pdf

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A little bit of homework goes a long way when others are questioning an answer does it not.http://www.addemoticons.com/emoticon...icons04259.gif

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Peter you call Qas a stalker all the while picking off mine and his conversation. stop causing trouble hypocrite!

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Are you a complete fool, I think the above proves it, go back to your tinfoil hat or the noise might reappear, your post proved that I was quite correct.

[img]Download Failed (1)[/img]

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Quit it - the pair of you. I am sick to death of seeing you two arguing all the time.

Put yourselves on each others ignore list because if I see the pair of you argue again, I shall suspend your accounts. I have had enough! :afire:

Re: Router Antennas
 

ok Mick. this is a proper reply. electrical fraud plus cloning. i happily admitted i was wrong after having to dig deep for a pro electrician. clones were knocked off. you said there were no clones. anyway i did think 'the thieves' were messing with something more serious on the network with what was going on in other peoples homes as well, even those with no VM but ready for VM services. same old cable point ticking over. like i said i happily admitted i was wrong.

Re: Router Antennas
 

The Virgin Media issued ones (and practically every one in the UK) are revision D.

VM were too cheap to go for the standard build, and made D-Link cut cut out every optional component and then some, including the rubber feet, the metal shield on the ethernet ports, the external antenna connectors, and eventually even the internal antenna connectors were removed to save money (hence why D4 has them soldered straight on).

The B revision was a short run Ubicom unit that isn't supported by dd-wrt or openwrt. You'll never see one in real life. Incidentally, it's also a pile of crap.

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Qasi will know from his forays into the SH. Aren't the antennae in the SH glued on or something as cheapskate? Didn't they reduce the number of antennae from the standard CG3101D? Isn't it just the sotry of the SH? Cut out good stuff to get the cost down?

Re: Router Antennas
 

The Superhub has two antenna, but removable antenna connectors. That'd be hard to cut down, as they are connected to an add-in PCIe card and those practically never come with soldered on antennae.

I don't know how many antennae the CG3101D has but in order to have reduced the number VM would also had to have downgraded the wireless card itself, because it only has two connectors.

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There's your answer then. Customised even down to the PCIe card.

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I think the word you really want is illegitimised, or words to that effect.;)

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OOps. How could I have let that slip?!!

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VM seem to have an obsession with shiny finger print magnets :P I looked online at pictures of the normal DIR-615 and it has a matte black top like my DIR-301 does.

Does anyone know why VM like shiny things so much?? Haha :P

I'm just waiting on the "pig tails" now anyway since I got the antennas this morning.

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There's a matte version of the Superhub floating around somewhere...

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Done it! Not tested it yet though..

https://fbcdn-sphotos-c-a.akamaihd.n...10968625_n.jpg
https://fbcdn-sphotos-h-a.akamaihd.n...94602205_n.jpg
https://fbcdn-sphotos-d-a.akamaihd.n...22634748_n.jpg
https://fbcdn-sphotos-f-a.akamaihd.n...34782111_n.jpg

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Oh god, not those cheap pieces of EBay crap...

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:LOL: qas

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Yeah they were maybe 2 quid each. I posted them on like the first page.

I think I did an alright job with the tails though. I had to use a hacksaw to cut some of the sticking out plastic off.

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I'd be surprised if they managed 6dB let alone the 16dB they're claiming.

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Hi guys

This site Marty Bugs is a great place for antenna designs and links to others.

The co linear there looks good too.

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I see your "I have so many antennas bleurx" and raise you:
http://www.schippermt.nl/assets/images/Node-mast3.jpg

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Its not mine, its a kit I saw on ebay :D