--- title: "Wi-Fi Channel Power: Not all Channels are the Same" description: When designing a new wireless network, Wi-FI Channel Power is often overlooked or misunderstood. 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[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) - Home [Get in Touch](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&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. ASSOCIATED BLOGS: - [Wi-Fi Concepts](https://blog.iptel.com.au/wi-fi-concepts) - [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/wi-fi-troubleshooting-how-to-fault-find-a-wi-fi-network) - [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&name=Crowded%20Space.jpg)](https://blog.iptel.com.au/access-point-power-caps) --- ## Cisco Transmit Power Levels Cisco Prime displays the APs from power 1 (maximum) to their minimum powers - its 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. ASSOCIATED BLOGS: - [MAC Address Converter Tool](https://blog.iptel.com.au/mac-address-converter-tool) --- ## AP Transmit Power: Design Guidelines In order to improve Wi-Fi performance, you need a working knowledge that there are different power l[![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&name=Access%20Point%20Power%20Caps%20(Instagram).png)](https://blog.iptel.com.au/access-point-power-caps)evels on different channels 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/eirp-vs-transmit-power-what-power-is-your-ap-transmitting-at) (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. ASSOCIATED BLOGS: - [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&name=Predictive%20Survey%20STILL%20for%20SM.png)](https://iptel.com.au/solutions/wireless-design/)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) survey](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). ASSOCIATED BLOG: - [Cheapest vs Best Value Design ](https://blog.iptel.com.au/cheapest-vs-best-value-wifi-design) --- ## 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.   #### Related Articles ###### [Reduce Wi-Fi Congestion with DFS](https://blog.iptel.com.au/reduce-wifi-congestion-with-dfs) June 19, 2025 ###### [RF Tuning](https://blog.iptel.com.au/rf-tuning) May 29, 2026 ###### [RF Tuning: Access Point Power Caps](https://blog.iptel.com.au/access-point-power-caps) May 29, 2026 ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "IPTel Solutions", "url" : "https://blog.iptel.com.au/author/iptel-solutions" }, "dateModified" : "2026-01-30T05:29:04.760Z", "datePublished" : "2025-11-28T01:46:12.000Z", "headline" : "Wi-Fi Channel Power: Not all Channels are the Same", "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" } } ```