--- title: "Wi-Fi Channel Power: Not All Channels Are the Same | IPTel" description: Why AP transmit power varies by Wi-Fi channel, how Cisco power levels work, and the design guidelines that keep clients reliable. image: https://blog.iptel.com.au/hubfs/Blogs/Wi-Fi%20Channel%20Power/Not%20All%20Channels%20are%20the%20Same%20(Instagram).png --- [![IPTellogo-byline-2020-dark-v2-pnd-optimised-500 (1)](https://blog.iptel.com.au/hs-fs/hubfs/IPTellogo-byline-2020-dark-v2-pnd-optimised-500%20(1).png?width=200&height=59&name=IPTellogo-byline-2020-dark-v2-pnd-optimised-500%20(1).png "IPTellogo-byline-2020-dark-v2-pnd-optimised-500 (1)")](https://iptel.com.au) - [Home](https://iptel.com.au/) - [Solutions](https://iptel.com.au/solutions) Technologies - [Cisco Access Manager](https://iptel.com.au/technologies/cisco-access-manager) - [Cisco Catalyst Center](https://iptel.com.au/technologies/cisco-catalyst-center) - [Cisco Meraki](https://iptel.com.au/technologies/cisco-meraki) - [Cisco SDA Fabric](https://iptel.com.au/technologies/cisco-sda-fabric) - [Cisco Spaces](https://iptel.com.au/technologies/cisco-spaces) - [Everpure Storage](https://iptel.com.au/technologies/everpure-storage) - [Industrial IoT](https://iptel.com.au/technologies/industrial-iot) - [LAN](https://iptel.com.au/technologies/lan) - [Security and Cisco ISE](https://iptel.com.au/technologies/security-and-cisco-ise) - [ThousandEyes](https://iptel.com.au/technologies/thousandeyes) - [Virtualisation](https://iptel.com.au/technologies/virtualisation) - [Wi-Fi](https://iptel.com.au/services/wi-fi-surveys) Services - [Backup Assure](https://iptel.com.au/services/backup-assure) - [Cisco URWB](https://iptel.com.au/services/cisco-urb) - [Cisco Webex Calling](https://iptel.com.au/services/cisco-webex-calling) - [Eco-Friendly Network Refresh](https://iptel.com.au/services/eco-friendly-network-refresh) - [Network Equipment Supply](https://iptel.com.au/services/network-equipment-supply) - [Splunk](https://iptel.com.au/services/splunk) - [Wi-Fi Assurance Review](https://iptel.com.au/services/wi-fi-assurance-review) - [Wi-Fi Surveys](https://iptel.com.au/services/wi-fi-surveys) - [Industries](https://iptel.com.au/industries) Education and Healthcare - [Education and Campuses](https://iptel.com.au/industries/education) - [Healthcare and Clinical](https://iptel.com.au/industries/healthcare) - [Aged Care](https://iptel.com.au/industries/aged-care) Enterprise - [Enterprise Networks](https://iptel.com.au/industries/enterprise) Industrial - [Mining and Camps](https://iptel.com.au/industries/mines) - [Utilities](https://iptel.com.au/industries/utilities) Retail & Warehousing - [Retail](https://iptel.com.au/industries/retail-and-stores) - [Warehousing](https://iptel.com.au/industries/warehousing) Entertainment - [Stadiums](https://iptel.com.au/industries/stadiums) - [Hospitality](https://iptel.com.au/hospitality-and-hotels) - [MSP](https://iptel.com.au/managed-services) Meraki - [Meraki Access](https://iptel.com.au/managed-services/meraki-access-and-security) - [Meraki Security and SD-WAN](https://iptel.com.au/managed-services/meraki-sd-wan) Cisco - [Cisco Campus Access](https://iptel.com.au/managed-services/cisco-campus-access) - [Cisco SD-WAN](https://iptel.com.au/managed-services/cisco-sd-wan) - [Cisco ISE](https://iptel.com.au/managed-services/cisco-ise) Security and Collaboration - [Security Service Edge](https://iptel.com.au/managed-services/security-service-edge) - [Meeting Rooms](https://iptel.com.au/managed-services/meeting-rooms-as-a-service) Data Centre and More - [AI Infrastructure](https://iptel.com.au/managed-services/ai-infrastructure) - [Non-Cisco Devices](https://iptel.com.au/managed-services/non-cisco-device-management) - [Full Stack Observability](https://iptel.com.au/managed-services/full-stack-observability) Free Assessment - [Managed Services Assessment](https://score.iptel.com.au/managed-network-services) - [Equipment](https://iptel.com.au/services/network-equipment-supply) Equipment Supply - [Network Equipment Supply](https://iptel.com.au/services/network-equipment-supply) - [Buy Cisco Equipment](https://iptel.com.au/services/cisco-equipment-supply) - [Buy Meraki Equipment](https://iptel.com.au/services/meraki-equipment-supply) Get Pricing - [Get a Hardware Quote](https://iptel.com.au/services/network-equipment-supply#hardware-quote) - [Wi-Fi AP Estimator](https://iptel.com.au/resources/wifi-access-point-estimator) - [Blog](https://blog.iptel.com.au) - [Resources](https://iptel.com.au/resources) Free Resources - [Top Wi-Fi Secrets](https://iptel.com.au/top-8-wi-fi-secrets) - [Cisco SDA Fabric](https://iptel.com.au/the-cios-guide-to-sda-fabric) - [Catalyst Center Enablement](https://iptel.com.au/cisco-catalyst-center-enablement) Assessments - [Cloud AI Assessment](https://score.iptel.com.au/cloud-ai-assessment) - [Collaboration Assessment](https://score.iptel.com.au/collaboration-assessment) - [Managed Services Assessment](https://score.iptel.com.au/managed-network-services) - [Network Assessment](https://score.iptel.com.au/network-assessment) - [Security Assessment](https://score.iptel.com.au/security-assessment) - [Splunk Assessment](https://score.iptel.com.au/splunk-assessment) Tools - [Automating Meraki](https://www.automatingmeraki.com) - [MAC Address Converter](https://iptel.com.au/resources/mac-address-converter) - [ThousandEyes Option Tool](https://score.iptel.com.au/thousandeyes) - [Wi-Fi AP Estimator](https://iptel.com.au/resources/wifi-access-point-estimator) Demos and Design - [Request a Meraki Demo](https://iptel.com.au/free-meraki-demo) - [FREE Meeting Room Design](https://iptel.com.au/schedule-meeting-room-design-session) - [Catalyst Center Enablement](https://iptel.com.au/cisco-catalyst-center-enablement) - [About](https://iptel.com.au/about-us) IPTel Solutions - [About us](https://iptel.com.au/about-us) - [Job Applications](https://careers.iptel.com.au/job-application) - [Privacy Policy](https://iptel.com.au/privacy-policy) - [Careers Blog](https://careers.iptel.com.au) Contact Us - [Contact Us Form](https://iptel.com.au/contact-us) - [Email Us](mailto:sales@iptel.com.au) Customer - [Customer Feedback](https://iptel.com.au/customer-feedback) - [Customer Referral](https://iptel.com.au/customer-referral) - [Terms and Conditions](https://iptel.com.au/terms-and-conditions) News Stories - [Project Guardian uses Networking Infrastructure as a Sensor](https://www.dailytelegraph.com.au/news/nsw/transport-for-nsw-launches-worldfirst-sensor-trial-to-stop-rail-and-bridge-trespassers/news-story/8dc52e8fbca4c471da408e670cf0163e) - [IPTel partners for monitoring for Meeting Rooms as a Service](https://www.commsbusiness.co.uk/content/news/highlight-partners-with-iptel-solutions) - [Webex Monitoring with Highlight](https://itbrief.co.uk/story/highlight-iptel-add-webex-monitoring-for-meeting-rooms) - [ITBrief with Meeting Room Monitoring](https://itbrief.com.au/story/highlight-iptel-add-webex-monitoring-for-meeting-rooms) - [Cisco Webex Meeting Rooms Monitoring](https://telconews.co.uk/story/highlight-iptel-add-webex-monitoring-for-meeting-rooms) - [IPTel adopts Highlight](https://itbrief.com.au/story/iptel-adopts-highlight-to-enhance-managed-services) - [Highlight MSP Upgrade](https://datacentre.solutions/news/71753/iptel-solutions-upgrade-with-highlights-service-platform) - [Cisco 360](https://www.crn.com.au/news/2026/networking/aussie-partners-react-cisco-360) - [DP World Transformation](https://www.cisco.com/site/us/en/about/case-studies-customer-stories/dp-world.html) - [Cisco Managed Services](https://www.arnnet.com.au/article/1251771/how-partners-can-take-a-leap-of-faith-with-managed-services.html) - [Project Delivery Excellence](https://channellife.com.au/story/cisco-honours-top-nz-partners-cisco-live) - [Great Place to Work](https://greatplacetowork.com.au/companies/iptel-solutions/) - [Wi-Fi Doesn't have to be Unreliable](https://www.techpartner.news/feature/iptel-wi-fi-doesnt-have-to-be-unreliable-494069) Buying from IPTel - [Buying Panels](https://iptel.com.au/professional-supply-panels) - [IPTel Store](https://store.iptel.com.au) - [Request a Quote](https://iptel.com.au/request-a-quote) - [Managed Services](https://iptel.com.au/managed-services-enquiry) Case Studies - [DP World Video](https://blog.iptel.com.au/hubfs/Case%20Studies/DP%20World_Case_Study.mp4) - [DP World](https://blog.iptel.com.au/dp-world-case-study) - [Backup Assure](https://blog.iptel.com.au/backup-assure-a-disaster-recovery-case-study) [Contact Us](https://iptel.com.au/contact-us) This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. ## Wi-Fi Channel Power: Not all Channels are the Same Nov 28, 2025 When designing a new wireless network, RF power levels are often overlooked or misunderstood. Depending on the type of deployment, power levels can have a great impact on client performance and reliability. And here's the catch - not all Wi-Fi channels run at the same power! ## ![Not All Channels are the Same](https://blog.iptel.com.au/hs-fs/hubfs/Blogs/Wi-Fi%20Channel%20Power/Not%20All%20Channels%20are%20the%20Same.png?width=2240&height=1260&name=Not%20All%20Channels%20are%20the%20Same.png) --- ## Wi-Fi Access Point Transmit Power The strange thing is that the allowed power levels on different channels are not all the same. This seems pretty strange to the newcomer; and different regulatory domains enforce different power caps on different channels. While the 2.4GHz channels are all the same transmit power, there are [different groups of channels in the 5GHz](https://blog.iptel.com.au/30-technical-wifi-thoughts) spectrum and they're allowed to do slightly different things. Some are aimed at external coverage and so are allowed a higher transmit power, and some are designed for internal coverage and so run at lower transmit powers. Explored in another blog was the related concept of having [enough APs and ensuring that the ambient transmit power was in bounds](https://blog.iptel.com.au/wireless-cheapest-or-best-value)- and is relatively matched for the clients in use. Related reading - [Wi-Fi Concepts](https://blog.iptel.com.au/wi-fi-terminology) - [How to Review a Wi-Fi Network - Part 1](https://blog.iptel.com.au/how-to-review-a-wifi-installation-part-1) - [How to Fault find a Wi-Fi Network](https://blog.iptel.com.au/how-to-review-a-wifi-installation-part-1) - [Wi-Fi Surveys](https://blog.iptel.com.au/wi-fi-surveys) ## [![High Density Wi-Fi](https://blog.iptel.com.au/hs-fs/hubfs/Crowded%20Space.jpg?width=1365&height=768&name=Crowded%20Space.jpg)](https://blog.iptel.com.au/access-point-power-caps) --- ## Cisco Transmit Power Levels Cisco's wireless controllers and Catalyst Center (which replaces Prime Infrastructure) display AP power levels from 1 (maximum) to their minimum powers - it's just that one AP might be running at a much higher power than the AP next to it, which is on a different channel. Taking this into account it means that if you don't use some sort of power caps you'll have APs which are running at a much higher power than the clients can transmit back at - and that leads to one way transmission problems. Related reading - [MAC Address Converter Tool](https://blog.iptel.com.au/mac-address-converter-tool) --- ## AP Transmit Power: Design Guidelines [![Access Point Power Caps (Instagram)](https://blog.iptel.com.au/hs-fs/hubfs/Blogs/AP%20Power%20Caps/Access%20Point%20Power%20Caps%20(Instagram).png?width=189&height=189&name=Access%20Point%20Power%20Caps%20(Instagram).png)](https://blog.iptel.com.au/access-point-power-caps)In order to improve Wi-Fi performance, you need a working knowledge that there are different power levels on different channels, which means that your Wi-Fi design should plan your network to run at the [weakest power across your APs](https://blog.iptel.com.au/top-8-secrets-to-great-wi-fi). Further, if you're looking to take advantage of adaptive algorithms such as [Transmit Power Control](https://blog.iptel.com.au/what-is-eirp-eirp-vs-transmit-power) (TPC), you should allow for some spare capacity again. In practice, yes this [will mean you have more APs](https://blog.iptel.com.au/increasing-access-point-density). It does however mean that your RF powers on your APs will be smoother, and you can support a larger number of clients. If you don't take into account that powers are different on different channels, you'll have a disparity of powers running on your APs and find that you have sticky client issues and clients dropping out. Related reading - [RF Design Survey](https://blog.iptel.com.au/wifi-predictive-survey-wifi-heatmaps) - [Wi-Fi and the Cinema Story](https://blog.iptel.com.au/wifi-and-the-cinema-story) - [RF Tuning and Access Point Power](https://blog.iptel.com.au/access-point-power-caps) --- ## RF Surveys RF Surveys are where your design takes shape. They take a number of forms and these follow in a logical [![Predictive Survey STILL for SM](https://blog.iptel.com.au/hs-fs/hubfs/Stock%20Images/Surveys/Predictive%20Survey%20STILL%20for%20SM.png?width=192&height=192&name=Predictive%20Survey%20STILL%20for%20SM.png)](https://iptel.com.au/services/wi-fi-surveys)sequence, from a [Wi-Fi Predictive Design](https://blog.iptel.com.au/wifi-predictive-survey-wifi-heatmaps), through to a [Wi-Fi Pre-deployment Survey (AP-on-a-stick)](https://blog.iptel.com.au/wireless-pre-install-surveys) through to a post-install confirmation survey. When you design, you need to understand the environment, the type of clients and the channels you're going to be using - all these are factors in how you design. RF Surveys are particularly important for clients which have to roam in real time, such as [Wi-Fi phones](https://blog.iptel.com.au/wifi-phone-dropouts), or [warehouse barcode scanners](https://blog.iptel.com.au/warehouse-wifi-best-practice). Related reading - [Cheapest vs Best Value Design](https://blog.iptel.com.au/cheapest-vs-best-value-wifi-design) --- ## Wi-Fi Channel Power: FAQs ### Why Isn't Transmit Power the Same on Every Channel? Regulatory limits differ between channel groups and bands, so the maximum power an AP can use depends on the channel it's on. ### How Do Cisco Power Levels Work? Cisco power levels step down in roughly 3 dB increments, so each level halves the transmit power — for example 25, 12.5, 6.25 and 3.125 mW. ### What Power Should APs Run At? AP power should be matched to the clients and stay below the client's transmit power. Voice designs typically run around 12.5 mW on 5 GHz and lower on 2.4 GHz. ### Should Designs Be Built at Maximum AP Power? No. Designing below maximum leaves headroom for RRM to turn APs up if an AP fails or walls are heavier than modelled. --- ## Wi-Fi Channel Power: Summary Wi-Fi is a tricky technology to design, install, tune - and fault find. One of the key reasons it doesn't work in practice is a lack of understanding of the underlying physics. Radio Frequency waves only travel so far, and through attenuating objects they may be stopped or reflected. In designing for a Wi-Fi deployment, you need to take account of what your proposed Wi-Fi channels can run at. Designing for more than this and you're designing in failure from the start. RELATED BLOGS: - [30 Technical Wi-Fi Thoughts](https://blog.iptel.com.au/30-technical-wifi-thoughts) - [Wi-Fi Surveys: Overview to Wi-Fi Survey types](https://blog.iptel.com.au/wi-fi-surveys) The real kicker is that the transmit power on different channels is not uniform - it's different in different regulatory domains (eg countries). What might work in the US may not work in Australia. ### Need Help With Your Wi-Fi? Our [Wi-Fi survey and design team](https://iptel.com.au/services/wi-fi-surveys) designs, surveys and fixes enterprise Wi-Fi across Australia, and the free [AP Estimator](https://iptel.com.au/resources/wifi-access-point-estimator) gives you a first AP count. If that would be useful, [get in touch with the IPTel team](https://iptel.com.au/contact-us) or email [sales@iptel.com.au](mailto:sales@iptel.com.au). #### Related Articles ###### [Wi-Fi Data Rates and Coverage](https://blog.iptel.com.au/wi-fi-data-rates-and-coverage) May 1, 2026 ###### [Reduce Wi-Fi Congestion with DFS](https://blog.iptel.com.au/reduce-wifi-congestion-with-dfs) June 19, 2025 ###### [Cisco 9124AXE Power Injector](https://blog.iptel.com.au/cisco-9124axe-power-injector) Sept 4, 2026 Free tool ### How Many Wi-Fi Access Points Do You Need? Work out APs, PoE and switch ports floor by floor, using the same survey grades our Cisco wireless engineers design to. Takes under a minute. [Try the AP Estimator →](https://iptel.com.au/resources/wifi-access-point-estimator?utm_source=blog&utm_medium=cta&utm_campaign=ap-estimator) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "IPTel Solutions", "url" : "https://blog.iptel.com.au/author/iptel-solutions" }, "dateModified" : "2026-10-03T07:43:53.445Z", "datePublished" : "2025-11-28T01:46:12.000Z", "headline" : "Wi-Fi Channel Power: Not All Channels Are the Same | IPTel", "image" : [ "https://blog.iptel.com.au/hubfs/Blogs/Wi-Fi%20Channel%20Power/Not%20All%20Channels%20are%20the%20Same%20(Instagram).png" ], "mainEntityOfPage" : { "@id" : "https://blog.iptel.com.au/wi-fi-channel-power", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://blog.iptel.com.au/hubfs/IPTel_Solutions_February2020%20-%20Header%20SiteMap/Images/IPTellogo-byline-2020-dark-v2.png" }, "name" : "IPTel Solutions Pty Ltd" } } ```