5 GHz antennas 2.4 GHz radio?

Hello

This could be the kind of a stupid question, but I can't find anything about it on the internet.

It's as follows:

We ordered 2 Cisco AIR-LAP1242AG-E-K9 Wireless Access Points with 4 antennas AIR-ANT5135D-R.

We accidentally ordered the antennas 5 GHz instead of the 2.4 GHz antennas.

Would it not possible to use the 5 GHz as antennas 2.4 GHz antennas?

If so, are there any down sides to it?

Thanks in advance!

Jeffrey Schotte

It is more a question of physics.

You can try to use 5 GHz antenna on a 2.4 GHz radio, however, steel cables must be very high and not much RF will be emitted by the antenna.  More RF energy remains in the line of transmission as a standing wave and consume through the playoffs of the radio in the form of heat.  This means that the available range is much shorter and the final RF may be fried due to the high SWR.  Some high end radios have SWR detection circuit and take appropriate measures to protect final of the RF, but I don't know that these access points have this feature.

Why don't you use just 5 GHz radio and let the 2.4 GHz radio off?  5 GHz frequencies is so much cleaner and easier to deal with.  You can keep everything in 5 GHz unless your CIO has an iPhone and is very demanding.

Tags: Cisco Wireless

Similar Questions

  • WNDR 4300 loses 2.4 GHz Radio daily

    I bought a router of 4300 in November 2013. Shortly after the purchase I had to reboot the router on a daily basis to maintain the wireless operation. Technical support provided a new update of the firmware which solved the problem. Fast forward to December 2014 and the router starts the band 2.4 GHz weekly radio. Now, I had to recharge every day or I lose those devices that do not have a 5 GHz radio. It's very frustrating, I can't keep the operational Netgear routers.
    Current firmware of my router is 1.0.1.60 and when I do a check for the new firmware on the router does report no new version of firmware available.

    I'm at my wits end with this router which replaced a WNDR 4000 who had similar problems, and then die altogether in less than 18 months. It has to be a way to keep my router to the top and work.

    Maybe somebody has some ideas on how to fix this?
    Thanks in advance.

    Steve

    The question was never on the cable Modem. I solved the problem by exchanging on the router for someone else, and so far he's been solid as a rock.

    Thanks anyway.

    Steve

  • 2.4 Ghz radio not found during the investigation of site

    Hello. Today, I was on a site where people are wondering about wireless performance. This is a site where are only 10 users per AP, as you can see in the attached picture.

    When I was at the local level marked in a red circle, I found the following

    SNR:30
    power:-64dBm
    frequency: 5 GHz
    Flow rate of 25Mbps download; Download 38Mbps

    It has been tested with my laptop and Intel® WiFi Link 5300 adapter.

    Although it seems all good, I try to find the 2.4 Ghz radio, but the software I used (Covera, Xirus, Inssider) cannot find the radio. I waited 10 minutes, and sometimes the radio appeared for 10 seconds and disappeared again. This is not the first time that occurred to me.

    I also checked the auto-rf in the CLI WLC and attached the two.

    No idea what is causing the radio0 to appear and disappear?

    nothing wrong with the AP radio,

    (1) not reset radio:

     Last radio reset code: 37 Radio resets - total:5 retries:0 failed:0 Reset Stats: Start Cnt: 4, Recovery: Cnt 0, Last Ret: 0, Fails: 0, Recvry Status: Stalled NO, In Prog NO Code/Count: 37/00003 1 62/00001 1 67/00001 0 

    (2) no radio breaks down (rcore.d0):

     2 -rwx 287 Jan 1 1970 00:19:44 +00:00 info 3 -rwx 246 Jun 26 2015 10:17:41 +00:00 env_vars 4 -rwx 55762 May 24 2015 03:00:14 +00:00 event.log 5 -rwx 64 May 24 2015 03:00:10 +00:00 sensord_CSPRNG0 38 drwx 576 Jan 1 1970 00:19:37 +00:00 ap3g2-rcvk9w8-mx 6 drwx 2176 Mar 16 2015 14:38:19 +00:00 ap3g2-k9w8-mx.153-3.JA3 74 drwx 0 Mar 1 1993 00:01:08 +00:00 configs 281 -rwx 3567 Jan 19 2015 15:46:17 +00:00 private-config 75 -rwx 75 Jun 29 2015 09:09:04 +00:00 capwap-saved-config 76 -rwx 7192 Jun 29 2015 09:09:05 +00:00 private-multiple-fs 77 -rwx 64 May 24 2015 03:00:10 +00:00 sensord_CSPRNG1 78 -rwx 965 Apr 30 2015 16:59:55 +00:00 lwapp_mm_mwar_hash.cfg

    (3) there are for clients connected to this wireless AP:

     Channel Utilization.......................... 9 % Attached Clients............................. 7 clients

    (4) the adjusted maximum Tx power:

     ### Tx Power: Dot11 Config Serving Channel 1 (Type 0) Active Level Index 1 (Unitless) Active Level 16 dBm (OFDM 16 dBm) IEEE MIB format TRUE Metric unit dBm

    (5) what I just noticed is that the AP has ID 4 and 4 attacks:

     *Jun 26 13:06:11.575: %WIDS-4-SIG_ALARM: Attack is detected on Sig:Standard Id:5 Channel:1 Source MAC:5cb5.245b.66f8 *Jun 26 13:06:12.579: %WIDS-4-SIG_ALARM: Attack is detected on Sig:Standard Id:5 Channel:1 Source MAC:5cb5.245b.66f8 *Jun 26 13:26:13.267: %WIDS-6-SIG_ALARM_OFF: Attack is cleared on Sig:Standard Id:5 Channel:1 *Jun 26 13:26:13.267: %WIDS-6-SIG_ALARM_OFF: Attack is cleared on Sig:Standard Id:5 Channel:1 *Jun 26 17:18:06.727: %WIDS-4-SIG_ALARM: Attack is detected on Sig:Standard Id:4 Channel:1 Source MAC:58a2.b5b0.1b06 *Jun 26 17:18:06.727: %WIDS-4-SIG_ALARM: Attack is detected on Sig:Standard Id:5 Channel:1 Source MAC:58a2.b5b0.1b06 *Jun 26 17:18:08.735: %WIDS-4-SIG_ALARM: Attack is detected on Sig:Standard Id:4 Channel:1 Source MAC:58a2.b5b0.1b06 *Jun 26 17:18:08.735: %WIDS-4-SIG_ALARM: Attack is detected on Sig:Standard Id:5 Channel:1 Source MAC:58a2.b5b0.1b06 *Jun 26 17:38:09.443: %WIDS-6-SIG_ALARM_OFF: Attack is cleared on Sig:Standard Id:4 Channel:1 *Jun 26 17:38:09.443: %WIDS-6-SIG_ALARM_OFF: Attack is cleared on Sig:Standard Id:4 Channel:1 *Jun 26 17:38:09.443: %WIDS-6-SIG_ALARM_OFF: Attack is cleared on Sig:Standard Id:5 Channel:1 *Jun 26 17:38:09.443: %WIDS-6-SIG_ALARM_OFF: Attack is cleared on Sig:Standard Id:5 Channel:1

    4 ID = toggles Assoc

    5 ID = toggles Auth

    Just check again later, you should see this SSID

  • Autonomous AP 1142n, 2.4 Ghz radio keeps going down

    Hi all

    We have recently installed two 1142n APs. 2.4 Ghz Radion is activated and 5 GHz is disabled.

    Every day the material side of the radios down to two access points. Software remains upward. Only a reloading solves the problem.

    They are all two the same SSID broadcast because they correspond to our network of comments. Logs show nothing other than the deauthenticating of the customers and moments where the radio down.

    Any recommended points that I have to look?

    Thank you.

    Hello

    I see several encryption instructions in configs... Please delete if not necessary...

    SSID dot11 COMMENTS
    VLAN 500
    open authentication
    authentication-key wpa version2 management
    Comments-mode
       any comments of mbssid-mode (since you juts hv an SSID, the "GUEST" mode will DO)
    WPA - psk ascii-
    !
    !
    Bridge IRB
    !
    !
    interface Dot11Radio0
    no ip address
    no ip route cache
    !
    none cipher mode is cipher aes - ccm
    !
    encryption mode vlan 500 ciphers aes - ccm
    !
    SSID COMMENTS
    !
    gain of antenna 0
    none mbssid
    root of station-role

    Once again, since the Radio 0.1 brdges traffic... I guess we need activate the interface... However since we hv not configuured a SSID for this interface, there is no problem if we unshut DOT11 interface 0.1...

    Make corresponding changes and let me know if connectivity is improved!

    Concerning

    Surendra

  • E-4200 low 5 ghz radio

    The radio on my E-4200 seems to have a weak signal of 5 ghz.   With the help of a Motorla Xoom tablet, I get 4 bars throughout my house with the 2.4 ghz signal, but the 5 ghz signal will remain not connected in the room ajoining, 20 ft of the router.  The only place where I can stay reliable connected to 5 ghz, is in the room with the E-4200.

    I opened a chat session with support and they had me take out AUTO communication channels and put on Charron 161 5 GHz and 2.4 ghz on Charron 9.   This has increased a little light power, but 5 ghz is still very low.

    I use WPA/WPA2 with WEP with the 2.4 ghz and 5 ghz.

    Normal for the 5 GHz band.  Internet research on this and you will find that you meet.

  • 5 alley, 2.4 ghz still work?

    I have a Time Capsule 2 GB race at the beginning of 2009 7.6.7. He was a soldier for many years and saved my bacon at least once. Now he won't pass on 2.4 ghz more. He thinks he does, I can select a channel or let him; It reports no errors. But no devices can see this base station.

    I can connect to the network 5 GHz without problem. Everything works as it should. but I also have devices 2.4 alone in the House that are now less internet. Before I reset the unit and risk losing my backups, or replace it altogether, is there something else to try?

    Very rare 5 GHz to work at 2.4 GHz is not, but it can happen if the 2.4 GHz radio left.

    On everything you can do at this point is try resetting the Capsule of time to return to the default settings and then set up again to see if that would help.

    Reset time Capsule will not affect your backups. Only network settings are reset when you perform a default reset.

    The real issue here is perhaps an average useful life of a time Capsule is about 3 years, so if the product works well since 2009, you did much better than the rest of us.

  • RALink RT3592 802.11a/b/g/n: Ralink RT3592 802.11a/b/g/n to 5 GHz WIFI connection problems

    I have a HP Probook s 4530 with a Ralink RT3592 2 x 2 adapter WiFi 802.11a/b/g/n and I try to connect to my wifi of 5G, but my laptop do not. He can see that the 2G version. My research on the web, I understand that it can use 5G, and my router broadcasts 5G because my phone use, so I can't work on what Miss me. Can anyone help?

    Best, Minoli

    Hello:

    The only suggestion I can offer is to try the latest driver directly from Mediatek (Ralink).

    PCI / mPCI / CB (RT2860/RT2760/RT2790/RT309X/RT35X2/RT539X/RT3290/MT7630)
    30/06/2015Win7 32/64 Win8 32/64 Win8.1 32/64Win7:5.0.55.0 Win8:5.0.55.0 Win8.1:5.0.55.0

    I had the same problem with the USB dual band Ralink wireless adapter.

    He showed only the 2.4 GHz band, and I knew it was a dual-band card.

    My first conclusion is that the adapter was defective and only 2.4 GHz radio worked.

    I searched on the internet about the adapter model and found that someone suggested to install the latest driver for Ralink for it that has indeed brought the 5.0 Ghz band to life.

    Don't say this is absolutely going to work for you, but you have nothing to lose by giving it a try.

  • Aspire Z3-615 cannot connect to WIFI 5 GHz

    Hello everyone, I'm just curious. I currently have 2 lines wifi, a normal 2.4 and 5 GHz WIFI.

    However, my computer, the Z3-615 Aspire on windows 8, is not able to read the 5 GHz WIFI.

    My network card is atheros ar956x 5 GHz qualcomm.

    I was browsing around the forum and am sure that my adapter is a single channel, which I guess means he can't read 5 g :/

    My phones are able to connect, so I wonder if there is a way to ensure that the computer can read 5g?

    Thanks for the help :-)

    I don't know if the link below is your computer, but if this is the case, it says b, g, n, which means it lacks a 5 GHz radio.

    http://www.BestBuy.com/site/Acer-Aspire-Z3-615-all-in-one-computer-Intel-Core-i3-i3-4130t-2-90-GHz-d...

  • WRT610N broadcasting at 5 GHz: how to tell him?

    I installed my WRT610N to broadcast at 2.4 and 5 GHz and I put the SSID broadcast on "Enabled" for both.  Each configuration has a different SSID.  However, the computer I tried to connect, via the adapter DWA-140 (which is able to use a band), only shows the 2.4 GHz SSID as being available and not the 5 GHz SSID as well.  I even tried manually typing the SSID, but it still does not recognize it.

    So, I'm in troubleshooting mode to determine if the router is not really broadcasting 5 GHz or if my wireless adapter does not work correctly.  I hope this forum can help me identify a way by which I can easily determine if my WRT610N works.

    As a result, several questions: is there a (if all goes well, easy) way I can tell if the WRT610N broadcasts at 5 GHz?  In particular, can I use WRT610N content on the web or network Magaic (that I installed) to help me determine to whom?  (The menu of configuration settings only indicates that it should be, but that doesn't tell me that it's really, from what I can tell.)  Or is there some other utility that can provide me with this information?

    Thanks in advance.

    You need a compatible adapter 5.0 Ghz such as:

    Linksys WUSB600N

    D-Link DWA-160

    Intel WiFi link 4965 agn

    Intel WiFi Linkw 5100 series

    The D - Link DWA-160 will be 5.0 Ghz radio band and if this card is the rev. B the Ralink drivers version ' ' find.

  • Impossible to exploit my devices wireless at the higher setting of 5 GHz.

    Hey... anyone... Please help because Linksys technical support was not worth the time spent to understand my problem.  I have a router E4200.   The version of the firmware is 1.1.02.  I hesitate to upgrade; However, my iMAC is picking up 5 GHz broadcast setting, but the rest of my wireless devices do recognize that my lower 2.4 GHz control.  I changed channels, my router address is changed because it is in conflict with my Verizon DSL.   I don't have FIOS.  What can I do to solve this problem.  I have an ipad, 2 iphones, 2 ipod touches, 2 computers laptops (PC), an XBOX and PS3 which needs to connect to a higher spreading.  The connections are slow and sometimes deleted.   Help, please!

    Very probably the rest of your devices is not a 5 GHz radio and therefore will not see the SSID of 5 GHz...

  • The Atheros AR5007EG wireless card is compatible with the 5.0 Ghz range router?

    I just buy a new DLINK router with dual band, one with 2, 4 Ghz and the other with 5.0 Ghz.  It suppose to be faster because you can use it with 2.4 Ghz for e-mail and 5.0 Ghz for HD video...

    Do you think the Atheros AR5007EG are able to manage the two frequencies?

    I just buy a new DLINK router with dual band, one with 2, 4 Ghz and the other with 5.0 Ghz.  It suppose to be faster because you can use it with 2.4 Ghz for e-mail and 5.0 Ghz for HD video...

    Do you think the Atheros AR5007EG are able to manage the two frequencies?

    None of this has to do with the software, Microsoft, Windows Vista...

    https://www.Google.com/search?q=Atheros+AR5007EG+specifications

    Leads to the answer is simple: No 5 GHz for you.

    ' Highly integrated single PCI Express CMOS solution with MAC/baseband processor and 2.4 GHz radio.

    And I think that your impression of what could be done is a little off anyway.  ;-)

  • Can I choose 40 MHz to 5.2 GHz and 20 MHz to 2.4 GHz channels at the same time?

    I have a WLC 5508 and 3500 6 LAP at the head office, 2 to another office and 2 to another office.

    I noticed that even when I specify 5.2 GHz on my (Intel Centrino Advanced-N 6230) wireless adapter it indicates the data rate is 144 Mbit/s.  I want to try to get 300 Mbps out of it and I think I need to enable 40 MHz wide channels in the range 5.2 GHz.  Well, I don't want to cause any disturbance to the network currently associated clients.  What can I do?  What happens if a client adapter does not support the wide 40 MHz channels?  Then I keep 2.4 GHz at 20 MHz wide channels, and then they would just connect to the frequency range of 2.4 GHz?

    Where would I go to change the width of the channel of 5.2 GHz only?  It is defined globally or I put it for each access point?  I saw a button radio for 20 MHz or 40 MHz to this place: Wireless > 802. 11A / n > RRM > DCA

    That's where I'd do the settings to change?  If I would work the clients on the network briefly?  Do 802.11n 40 MHz channels are supported by all adapters with 5.2 GHz radios?

    Looking at the use of the string with a program called inSSIDer 3, there is nothing past in the band 5 GHz except for us.

    Thanks for the help.  Just trying to get the best possible flow that I've had a few requests SMB based respond slowly or poorly when on... wireless connections even when the operating system reports 144 Mbps.

    Here is a shot... screen mine will be different because I use a beta code:

    Thank you

    Scott

    Help others by using the rating system and marking answers questions as 'response '.

  • Change the frequency of the antenna

    Hello

    I hope I can get a quick answer on this forum with an understandable explanation...

    I have a wireless router that runs on 802.11, and I'm trying to change the frequency at which it runs on. I'm sure this is possible, but I didn't really know how this can be done.

    Change the frequency would be easier than to change the antenna, or should a work be done on the circuit board. I realize it may void my warranty, but it is a computer science for my school project.

    Can I leave the router alone completely and just mess with the firmware in a sort of way?

    You mean regional wireless network?

    Forget it. He needs the hardware changes. The radio of the BEF is a 2.4 GHz radio. Definitely, there is no way to set this radio to a different frequency outside this band.

    You will need to replace the piece of the radio, antennas, install a custom firmware with a driver for the new piece and customize the firmware to manage the necessary settings for the new radio.

    You will need to check in another forum for help with this. This forum does not cover this type of topics.

    But I want to get my hopes up. I think that the BEF does not use standard linux in its firmware. So you won't get any firmware except the official for the BEF. So you will get the source code for the firmware needed to recompile the firmware in order to add your new driver.

    So basically, I would say that what you do is impossible, unless you are able to build your own firmware from scratch.

  • AP1242 - requires antennas?

    Hello

    Product ref: AIR-LAP1242AG-E-K9

    Looking to buy one of these for a SOHO location (probably not a very difficult environment). Is essential to buy antennas to connect the RP - TNC connectors, or can the AP1242 make wireless without them?

    Thanks in advance,

    Darren

    Hi Darren,

    The AP 1242 will require at least 2 external antennas. Take a look (there are double RP - TNC connectors for radio b/g 2.4 GHz and 5 GHz radio) so you will want to at least an antenna for each radio.

    Antenna connectors - AP 1242

    2.4 GHz

    Two RP - TNC connectors

    5 GHz

    Two RP - TNC connectors

    Cisco Aironet 2.4 GHz and 5 GHz antennas and accessories

    The choices you make depend on the model of coverage you want. There are a number of models for the listed here; 1242

    http://www.Cisco.com/en/us/products/ps6521/products_data_sheet09186a008022b11b.html

    Be sure to order this model AIR-AP1242AG-E-K9 (note No. 'L'. This model without the 'L' is the stand-alone version of the IOS.

    I hope this helps!

    Rob

  • AIR-Antenna compatibility with ap AIR-CAP1602E ANT5160V-R

    HI, I need 2 external antenna 5 GHz for AIR-CAP1602E.

    In the Cisco documentation, I have not found that "this antenna is designed to be used with Cisco Aironet access points and bridges but can be used with any device radio of Cisco Aironet 5 GHz using a reverse polarity (RP - TNC) connector."

    And in stores I found 'designed for Aironet 1100, 1130AG, 1250 modular Unified Access Point Platform, 1252AG, 1252AG Point of independent access, Unified Access Point 1252AG, 1252, 1252G Unified Access Point, 1310 Outdoor Bridge/Access Point'

    It is the job or not?

    Only works in 5.0 Ghz and disable your 2.4 Ghz radio.

    You also have THREE antennas.

Maybe you are looking for