SmartSDR Locks Up Intermittently on iPad on Fast 5Ghz WiFi

  • 1
  • Problem
  • Updated 2 years ago
Using SmartSDR for iOS on a fast WiFi network results in intermittent lockups every few seconds. The entire app display freezes for up to two seconds and audio stops, then suddenly takes off running normal for a couple of seconds. Running on a slow WiFi network works fine.

Also, why doesn’t the iPad app provide the same SmartLink connection option as it does on the iPhone?

I have already tried the various Net, reduced update rates, background update changes recommended in related posts.

I’m on an iPad Air 2 on iOS 11.1.
Photo of Rick - W5FCX

Rick - W5FCX

  • 289 Posts
  • 81 Reply Likes

Posted 2 years ago

  • 1
Photo of Jim Gilliam

Jim Gilliam

  • 950 Posts
  • 221 Reply Likes

Have you gone to Settings and pressed "check Smartlink status?"

Photo of Rick - W5FCX

Rick - W5FCX

  • 289 Posts
  • 80 Reply Likes
Yes. It says SmartLink is okay.
Photo of Larry - W8LLL

Larry - W8LLL

  • 533 Posts
  • 116 Reply Likes
When i was running my linksys router i had to use 802.11 g @ 2.4 Ghz to stop the stuttering. The asus router i have now works fine on the fastest settings.
Photo of Rick - W5FCX

Rick - W5FCX

  • 289 Posts
  • 80 Reply Likes
I tried an old linksys router I have connected upstairs for my security cameras and it works perfectly over the VPN. Very odd that the slow WiFi works while the high speed WiFi fails. Must be a timing bug in the app that can’t handle the faster I/O rates.

Still unable to connect via Upnp channel... but at least I’m up now on the iPad.
Photo of KC9NRN


  • 324 Posts
  • 32 Reply Likes
I use a Netgear Nighthawk for 5GHz and my iPad Pro has no issues but then my 5GHz config has almost no competition either. There are apps that you can download that will tell you how many other wireless networks are using the same channels which could cause issues. Adjust to ensure you aren't in the "default" ranges.
Photo of Bill Garfield W1BG

Bill Garfield W1BG

  • 74 Posts
  • 15 Reply Likes
Just IMO one of the best IOS apps for finding all of the 2.4 and 5 gHz access points out there (and the channels they are operating on) is "Airport Utility" available from the App store on your IOS device.  It's about a 3 yr old app that could use some upgrading, but it works great for this specific purpose.
Photo of Rob Fissel

Rob Fissel

  • 270 Posts
  • 48 Reply Likes
This whole WLAN thing is a fad anyway. Full of problems. You need to hardwire your iPad to Ethernet. I do all the time, and it works great. I have a 300 foot length of CAT5 which let's me tether to my router and walk around the house. Works great!

Yes, I'm totally joking. Glad to hear you got it somewhat working. 
Photo of Mike - VE3CKO

Mike - VE3CKO, Elmer

  • 552 Posts
  • 289 Reply Likes
Good one Rob!
Photo of Rick - W5FCX

Rick - W5FCX

  • 289 Posts
  • 81 Reply Likes
Seriously. It’s an unacknowedged bug. It fails miserably on fast networks! Would I kid about it?