on 2.4 the connection is good but the speed is really bad, i set those on my 5.gz and i would of never thought i am able to get it to be acctable for firestick and facetime before it would never reach my room.
Entering a value in antenna gain will only lower the transmitted power.
So there you have it, folks. It's a regulatory thing. Law limits the radiated power, so entering a gain figure matching that of the actual antenna(s) corresponds not to increasing power to clients in the favored directions but to decreasing power to clients in the nonfavored directions. If you instead leave the antenna-gain setting at 0 dBi while using a higher-gain antenna, you'll be doing a little of both, but unless you've set Tx power below the legal limit, you'll be doing it illegally. (Thanks, Per.)
TX 30dBm is illegal unless we set dBi setting corrosponding to physical value? Because if we add any antenna gain EIRP will be over 30 db, be it default or aftermarket high gain ones?
For extra clarification, Can actual antenna directivity vary compared to stock firmware in any case?
Quote:
No, you better leave it as is. If you are thinking will the gain of the antenna be changed after changing this setting. The answer is no. The gain of the antenna is determined by the design of the antenna. You will change this setting only when you replace the antenna with let say a 6dB antenna. Then you will set it to 6.
You mean we don't need to change antenna gain setting unless we replace them because the default antenna gain is already considered by DD-WRT and the amount is automatically reduced from TX even if we keep the setting to 0 dBi?
Joined: 04 Aug 2018 Posts: 1447 Location: Appalachian mountains, USA
Posted: Thu Aug 13, 2020 21:00 Post subject:
lavus4578 wrote:
blkt wrote:
The quote answers your questions.
You mean we don't need to change antenna gain setting unless we replace them because the default antenna gain is already considered by DD-WRT and the amount is automatically reduced from TX even if we keep the setting to 0 dBi?
You would think, right? But the whole thing is likely a little looser than that. Consider, for example, the fact that no default antenna is likely going to have 0 dBi gain, but the probability that dd-wrt devlopers are going to have the time, interest, expertise, or equipment to precisely measure the gains of the default antennas of all the routers for which there are dd-wrt builds is known exactly: that probability is zero. _________________ 2x Netgear XR500 and 3x Linksys WRT1900ACSv2 on 53544: VLANs, VAPs, NAS, station mode, OpenVPN client (AirVPN), wireguard server (AirVPN port forward) and clients (AzireVPN, AirVPN, private), 3 DNSCrypt providers via VPN.
Gain and directivity are physical properties of the antenna, inherent in design. No firmware, stock or custom, can change this.
WRT32X antennas are rated 4dBi @2.4GHz and 7dBi @5GHz. They are well designed and there is no need to change them.
It is the responsibility of the user to set regulatory domain, channel width, extension channel, wireless channel, TX power and antenna gain accordingly.
