Fact Check: Are DFS channels better?

Fact Check: Are DFS channels better?

Published May 2, 2025
±
VERDICT
Partially True

# Are DFS Channels Better? The claim in question revolves around the effectiveness and advantages of using Dynamic Frequency Selection (DFS) channels...

Are DFS Channels Better?

The claim in question revolves around the effectiveness and advantages of using Dynamic Frequency Selection (DFS) channels in wireless local area networks (WLANs). Proponents argue that DFS channels can enhance network performance by increasing the number of available channels in the 5 GHz band, while critics caution about potential drawbacks, such as connection instability due to radar interference. This article will explore the available evidence regarding DFS channels, examining both the benefits and challenges they present.

What We Know

  1. Definition of DFS: Dynamic Frequency Selection (DFS) is a mechanism that allows Wi-Fi devices to utilize certain 5 GHz channels that are also used by radar systems. This is intended to minimize interference between Wi-Fi networks and radar operations 8.

  2. Increased Channel Availability: Implementing DFS can significantly increase the number of available channels in the 5 GHz band, which is crucial for high-density environments where many devices operate simultaneously. Some sources suggest that DFS support can nearly triple the number of channels available 7.

  3. Radar Detection and Channel Switching: A key feature of DFS is its ability to detect radar signals. If a radar signal is detected, the Wi-Fi device must switch to a different channel, which can lead to temporary disconnections or reduced performance 610.

  4. Performance Implications: While DFS channels can support higher data transfer rates and more devices, they also introduce complexities. For example, the need for devices to listen for radar signals before transmitting can result in longer connection times and slower roaming for client devices 9.

  5. Expert Opinions: Some experts recommend avoiding DFS channels due to the potential for connection interruptions and the complexities they introduce. They argue that sticking to non-DFS channels can lead to more stable connections, particularly in environments where consistent performance is critical 34.

Analysis

The debate over the efficacy of DFS channels is multifaceted, with both supporting and opposing viewpoints backed by varying degrees of evidence.

  • Supporting Sources: Articles from sources like GigXero and AAMI highlight the benefits of DFS channels, emphasizing their ability to handle more devices and increase data transfer rates 67. These sources are generally reliable, as they are written by professionals in the field of networking and medical device connectivity, respectively.

  • Contradicting Sources: Conversely, sources such as WIFI_NC and Network Computing caution against using DFS channels, citing issues with radar interference and the need for devices to switch channels, which can disrupt connectivity 34. These warnings are echoed by practical advice from industry experts, suggesting that non-DFS channels may provide a more stable experience in certain scenarios.

  • Methodological Concerns: While many sources provide anecdotal evidence or expert opinion, there is a lack of comprehensive, peer-reviewed studies that quantitatively compare the performance of DFS versus non-DFS channels in various environments. This gap in rigorous research makes it difficult to draw definitive conclusions about the overall effectiveness of DFS channels.

  • Potential Conflicts of Interest: Some sources may have inherent biases based on their affiliations or the products they promote. For instance, companies that manufacture routers may have a vested interest in promoting the use of DFS channels, while others focused on stability may advocate against them. Critical evaluation of these affiliations is essential when interpreting their claims.

Conclusion

Verdict: Partially True

The claim that DFS channels can enhance network performance is partially true. Evidence supports the notion that DFS channels increase the number of available channels in the 5 GHz band, which can be beneficial in high-density environments. However, there are significant concerns regarding connection stability due to potential radar interference and the complexities introduced by the need for devices to switch channels.

The available evidence is mixed; while some sources highlight the advantages of DFS channels, others emphasize the drawbacks, particularly in terms of connection reliability. The lack of comprehensive, peer-reviewed studies further complicates the ability to draw definitive conclusions about the overall effectiveness of DFS channels.

Readers should be aware of these nuances and critically evaluate the information presented, considering both the potential benefits and the limitations associated with DFS channels in their specific contexts.

Sources

  1. DFS Channels in WLANs: Benefits, Drawbacks, and Tips - LinkedIn https://www.linkedin.com/advice/0/what-benefits-drawbacks-using-dfs-channels-wlan-skills-wlan
  2. When You Should Use Dynamic Frequency Selection on a Router (and When ... - How-To Geek https://www.howtogeek.com/814458/when-you-should-use-dynamic-frequency-selection-on-a-router-and-when-you-shouldnt/
  3. DFS channels and why to avoid them - WIFI_NC https://wifinc.net/dfs-channels-and-why-to-avoid-them-even-though-you-say-you-cannot/
  4. Dynamic Frequency Selection Part 3: The Channel Dilemma - Network Computing https://www.networkcomputing.com/wireless-networking/dynamic-frequency-selection-part-3-the-channel-dilemma
  5. DFS: Are you a good witch or a bad witch? - Network World https://www.networkworld.com/article/798436/wireless-dfs-are-you-a-good-witch-or-a-bad-witch.html
  6. The Tale of DFS Channels - GigXero https://www.gigxero.com/blog-1/2023/12/2/the-tale-of-dfs-channels
  7. Medical Connectivity FAQs- 802.11 - AAMI https://www.aami.org/medical-device-connectivity/medical-device-connectivity-faqs-standards-802-11
  8. SmallNetBuilder's Wi-Fi Dynamic Frequency Selection (DFS) FAQ https://www.smallnetbuilder.com/basics/wireless-basics/smallnetbuilder-s-wi-fi-dynamic-frequency-selection-dfs-faq/
  9. Channel Planning Best Practices for Better Wi-Fi https://www.ekahau.com/blog/channel-planning-best-practices-for-better-wi-fi/
  10. What are WiFi DFS frequencies and should I care? - Metis.fi https://metis.fi/en/2017/08/dfs-en/

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Fact Check: Autistic Non-Verbal Episodes in Marriage: Why Words Vanish Sometimes and What to Do About It Neurodiverse Couples Tuesday, august 12, 2025. Here’s the scene: You’re in the middle of a conversation with your spouse. Maybe the topic is small (“Did you pay the water bill?”) or monumental (“Are we happy?”). And then—without warning—your autistic partner’s voice disappears. No yelling, no slammed doors. Just… gone. You’re left holding the conversational steering wheel while they’ve quietly climbed into the trunk. If you’ve never lived with high-functioning autism, this can be tragically misconstrued as stonewalling or contempt. It isn’t. It’s just neurology pulling the emergency brake. Why This Happens: The Science Without the Lab Coat Smell For autistic adults, losing speech under stress is often a shutdown—a form of nervous system overload that knocks language production offline. Think of it like your phone freezing: all the apps are still there, but none of them open when you tap. Research calls this autistic burnout when it happens in a longer, chronic cycle—linked to masking (Hull et al., 2017; Raymaker et al., 2020). Masking is the art of “performing normal” so well that non-autistic people think you’re fine. The issue is that it eats through your energy reserves like a car idling in traffic with the A/C on full blast (Mantzalas et al., 2022). Eventually, one hard conversation can tip you from functional to frozen. And here’s where couples therapy meets neuroscience: physiological flooding—the body’s fight/flight/freeze switch—is a known relationship killer (Malik et al., 2019; Gottman Institute, 2024). In other words, for some autistic partners, flooding may tend to show up sooner, last longer, and is more likely to pull the plug on speech entirely. The Danger Loop in Marriage Autistic partner goes non-verbal — brain says “nope.” Non-autistic partner reads it as avoidance — brain says “attack.” Pressure increases — “Just say something.” Shutdown deepens — and now you’ve both lost. Do that a few hundred times and you’ll start conflating a physiological response into a moral failing. That’s the real marriage-killer. The Protocol: Three Phases, Zero Guesswork This is where we get practical. You can’t “love away” a temporary shutdown, but you can stop it from turning into World War III. Before: Build the Net Name the state. Agree on a phrase or signal ( I call this a couple code)—such as “words offline,” “shutdown,” a hand over the heart. The point is to make the invisible visible. The Shutdown Card. A literal card that says: I can’t speak right now. Please lower lights, reduce sound, give me X minutes. I promise I will circle back. The Pause Rule. Require a minimum of 20 minutes before resuming any tough talk. Autistic partner may need 90+. Agree ahead of time. Downgrade Kit. the usual gear; earplugs, soft light, weighted blanket, fidget, a quiet room. You know, human decency in object form. Reduce Daily Load. Avoid heavy talks right after work or big social events. Chronic overload makes a nervous shutdown more probable. During: Do Less, Better Autistic Partner: Give the signal. Exit stimulation. Switch channels if possible (text, notes app, yes/no cards). Send a short pre-written message: “Safe, can’t talk, back at 8:15.” Non-Autistic Partner: Acknowledge once—“Got it, I’m with you.” Hold the pause boundary. Lower stimuli. Go regulate your own nervous system—walk, journal, pet the dog. Don’t rehearse comebacks. Both: Avoid sarcasm, interrogation, ultimatums. Nothing lengthens a shutdown like moral outrage. After: Close the Loop Check in: “Are you ready to talk, or should we start in text?” Debrief: Identify triggers and what helped. Solve the actual problem. No conflict gets left to rot in the corner. Spot burnout early. If shutdowns start clustering, it’s time to reduce demands, not double them. How This Isn’t Stonewalling Stonewalling is a choice. Shutdown is a lockout. Stonewalling says, “I won’t talk to you.” Shutdown says, “I can’t talk to you yet, but I will.” The key difference? Repair intention. A shutdown protocol builds that right into the process. The Ten-Minute At-Home Drill Co-create your signal and card. Agree on a pause window. Pack the downgrade kit. Rehearse the exchange (“Got it, I’m with you.”). Check in weekly to tweak the system. Remember, you’re not aiming for zero shutdowns. You’re aiming for shorter, kinder, safer ones. Why This Works Because it matches lived autistic experience (Raymaker et al., 2020; Lewis et al., 2023). Because it honors nervous system limits instead of punishing them (Malik et al., 2019). Because it lets both partners keep their dignity and still solve the problem. In other words: you’re building a marriage that can survive the occasional moments when the words are gone for the time being. Be Well, Stay Kind, and Godspeed. REFERENCES: Hull, L., Mandy, W., Lai, M.-C., Baron-Cohen, S., Allison, C., Smith, P., & Petrides, K. V. (2017). “Putting on my best normal”: Social camouflaging in adults with autism spectrum conditions. Autism, 21(5), 611–622. https://doi.org/10.1177/1362361316671012 Raymaker, D. M., Teo, A. R., Steckler, N. A., Lentz, B., Scharer, M., Delos Santos, A., … & Nicolaidis, C. (2020). “Having all of your internal resources exhausted beyond measure and being left with no clean-up crew”: Defining autistic burnout. Autism in Adulthood, 2(2), 132–143. https://doi.org/10.1089/aut.2019.0079 Mantzalas, J., Richdale, A. L., Adikari, A., Lowe, J., & Dissanayake, C. (2022). What Is Autistic Burnout? A thematic analysis of posts on two online platforms. Autism in Adulthood, 4(1), 52–65. https://doi.org/10.1089/aut.2021.0079 Lewis, L. F., et al. (2023). The lived experience of meltdowns for autistic adults. Autism, 27(7), 1787–1799. https://doi.org/10.1177/13623613221145783 Malik, J., et al. (2019). Emotional flooding in response to negative affect in romantic relationships. Journal of Couple & Relationship Therapy, 18(4), 327–349. https://doi.org/10.1080/15332691.2019.1641188 Gottman Institute. (2024, March 4). Making sure emotional flooding doesn’t capsize your relationship. Retrieved from https://www.gottman.com/blog/making-sure-emotional-flooding-doesnt-capsize-your-relationship/

Detailed fact-check analysis of: Autistic Non-Verbal Episodes in Marriage: Why Words Vanish Sometimes and What to Do About It Neurodiverse Couples Tuesday, august 12, 2025. Here’s the scene: You’re in the middle of a conversation with your spouse. Maybe the topic is small (“Did you pay the water bill?”) or monumental (“Are we happy?”). And then—without warning—your autistic partner’s voice disappears. No yelling, no slammed doors. Just… gone. You’re left holding the conversational steering wheel while they’ve quietly climbed into the trunk. If you’ve never lived with high-functioning autism, this can be tragically misconstrued as stonewalling or contempt. It isn’t. It’s just neurology pulling the emergency brake. Why This Happens: The Science Without the Lab Coat Smell For autistic adults, losing speech under stress is often a shutdown—a form of nervous system overload that knocks language production offline. Think of it like your phone freezing: all the apps are still there, but none of them open when you tap. Research calls this autistic burnout when it happens in a longer, chronic cycle—linked to masking (Hull et al., 2017; Raymaker et al., 2020). Masking is the art of “performing normal” so well that non-autistic people think you’re fine. The issue is that it eats through your energy reserves like a car idling in traffic with the A/C on full blast (Mantzalas et al., 2022). Eventually, one hard conversation can tip you from functional to frozen. And here’s where couples therapy meets neuroscience: physiological flooding—the body’s fight/flight/freeze switch—is a known relationship killer (Malik et al., 2019; Gottman Institute, 2024). In other words, for some autistic partners, flooding may tend to show up sooner, last longer, and is more likely to pull the plug on speech entirely. The Danger Loop in Marriage Autistic partner goes non-verbal — brain says “nope.” Non-autistic partner reads it as avoidance — brain says “attack.” Pressure increases — “Just say something.” Shutdown deepens — and now you’ve both lost. Do that a few hundred times and you’ll start conflating a physiological response into a moral failing. That’s the real marriage-killer. The Protocol: Three Phases, Zero Guesswork This is where we get practical. You can’t “love away” a temporary shutdown, but you can stop it from turning into World War III. Before: Build the Net Name the state. Agree on a phrase or signal ( I call this a couple code)—such as “words offline,” “shutdown,” a hand over the heart. The point is to make the invisible visible. The Shutdown Card. A literal card that says: I can’t speak right now. Please lower lights, reduce sound, give me X minutes. I promise I will circle back. The Pause Rule. Require a minimum of 20 minutes before resuming any tough talk. Autistic partner may need 90+. Agree ahead of time. Downgrade Kit. the usual gear; earplugs, soft light, weighted blanket, fidget, a quiet room. You know, human decency in object form. Reduce Daily Load. Avoid heavy talks right after work or big social events. Chronic overload makes a nervous shutdown more probable. During: Do Less, Better Autistic Partner: Give the signal. Exit stimulation. Switch channels if possible (text, notes app, yes/no cards). Send a short pre-written message: “Safe, can’t talk, back at 8:15.” Non-Autistic Partner: Acknowledge once—“Got it, I’m with you.” Hold the pause boundary. Lower stimuli. Go regulate your own nervous system—walk, journal, pet the dog. Don’t rehearse comebacks. Both: Avoid sarcasm, interrogation, ultimatums. Nothing lengthens a shutdown like moral outrage. After: Close the Loop Check in: “Are you ready to talk, or should we start in text?” Debrief: Identify triggers and what helped. Solve the actual problem. No conflict gets left to rot in the corner. Spot burnout early. If shutdowns start clustering, it’s time to reduce demands, not double them. How This Isn’t Stonewalling Stonewalling is a choice. Shutdown is a lockout. Stonewalling says, “I won’t talk to you.” Shutdown says, “I can’t talk to you yet, but I will.” The key difference? Repair intention. A shutdown protocol builds that right into the process. The Ten-Minute At-Home Drill Co-create your signal and card. Agree on a pause window. Pack the downgrade kit. Rehearse the exchange (“Got it, I’m with you.”). Check in weekly to tweak the system. Remember, you’re not aiming for zero shutdowns. You’re aiming for shorter, kinder, safer ones. Why This Works Because it matches lived autistic experience (Raymaker et al., 2020; Lewis et al., 2023). Because it honors nervous system limits instead of punishing them (Malik et al., 2019). Because it lets both partners keep their dignity and still solve the problem. 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F., et al. (2023). The lived experience of meltdowns for autistic adults. Autism, 27(7), 1787–1799. https://doi.org/10.1177/13623613221145783 Malik, J., et al. (2019). Emotional flooding in response to negative affect in romantic relationships. Journal of Couple & Relationship Therapy, 18(4), 327–349. https://doi.org/10.1080/15332691.2019.1641188 Gottman Institute. (2024, March 4). Making sure emotional flooding doesn’t capsize your relationship. Retrieved from https://www.gottman.com/blog/making-sure-emotional-flooding-doesnt-capsize-your-relationship/

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Fact Check: Are DFS channels better? | TruthOrFake Blog