Smart SDR app not staying connected on iPhone 5

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I just bought the Smart SDR app. On my iPhone 5  It runs for a few minutes and then disconnects. Would upgrading to an iPhone 7 offer a more stable connection? 

For those using an iPad to run this app, are you pleased with it's performance?
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John Leonard

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Posted 2 years ago

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John Leonard

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I just found this thread re iPhone 7:
https://community.flexradio.com/flexradio/topics/smart-sdr-ios-1-0-8-low-audio-on-iphone-7

Perhaps the iPhone 7 is not the way to go?
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Ria - N2RJ, Elmer

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I run mine on an iPhone 7 plus without problems.

That issue was fixed in a later release.

Ria
(Edited)
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KY6LA - Howard, Elmer

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Yes it works great with my iPhone 6+ And iPads. The issue with 7 seems to resolved with a reboot
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John Leonard

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Okay, thanks.... so the latest undated version of the Smart SDR app  compensates for the different way the iPhone 7 handles audio? Apple has really promoted how the stereo speakers sound on the 7 version. On my (now elderly) iPhone 5  the audio seemed pretty "tinny". 

I guess I'm probable going to "need" an iPad too (grin). Ria I think I saw you post that it would not be necessary to invest in one of  the more expensive Pro models if running Smart SDR was the main goal. 

I was looking at this one:  Apple iPad with WiFi, 128GB, Space Gray (2017 Model). Amazon has this for $422.00.... If this is all the power I need to run the SDR app, they YEAH I guess I really do need it (I maybe getting older, but I'm still a big kid). 
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Ria - N2RJ, Elmer

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The last production version of the app I used did work well. "Stereo" audio works but is lower volume and that is an Apple limitation. I use it with the lightning adapter on a pair of wired headphone as well.

Yes, even the lowest end 2017 iPad will be sufficient for SmartSDR. 
(Edited)
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John Leonard

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The good news, I played with the EQ and the receive audio sounds somewhat better now.... the not good is that it still only plays for a few minutes before disconnecting again. I'm using a TP-LINK AC 1900 dual band gigabit router. The Maestro seems to run OK on this system???

Is this likely due to the older iPhone 5 I'm using?
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Ria - N2RJ, Elmer

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It could be due to network issues. Have you tried a different router/access point?
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John Leonard

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Hi Ria, I only have one router at the house.... I just came home with the new iPhone 7 Plus and the audio is MUCH better. I was just getting ready to type that the connection problem seems to be gone as well.... when it started disconnecting again....

I upgraded to the TP-LINK AC 1900 dual band gigabit router when I got the Maestro. A much more  computer literate friend had suggested that model. I'm hoping not to need to replace it at this point???
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Ria - N2RJ, Elmer

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Can you borrow one? Just to eliminate the router as a cause. Also did you check your Ethernet cable from the radio to the router? Someone here had a problem where they were getting poor performance and mysterious disconnects and it turned out to be an Ethernet cable.

Ria
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WV9L

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Try running on the 5.8ghz side, instead of the 2.4 where most of your other traffic is probably running. My kid has an xbox he plays online. Its connected via wifi. When he gets on, it would cause my rx and tx audio to glitch and i found that jumping over on 5.8ghz side and having isolation fixed the problem.
(Edited)
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David Decoons wo2x, Elmer

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John, I had issues with one wireless AC router and IOS devices running pitifully slow. With that router I wound up disabling Universal Beamforming and Explicit Beamforming. Throughput on the iPhone and iPad went up substantially.

You can also check with TP-Link to see if there is a newer firmware available for your router.


Dave wo2x
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WV9L

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I run an iphone 7 + and an ipad mini with no problems. I run a 6500 series radio, and 100% of my operation is done this way. I have a pc in the shack with softether vpn running and smartsdr on it. To run digital modes, i use splashtop on my ipad or phone to remote into the pc in the shack. Otherwise, im on the ios app from home or remote. This allows digital mode operation like JT65, from a local point to the radio and not over WAN, which would have latency issues. Smartsdr ios is well worth the $$$. Spend the extra $5 for the spotter and logbook. The spots show up in waterfall and allow quick tuning. The logbook exports nicely tobicloud drive, so i can upload the adif to qrz and lotw
(Edited)
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John Leonard

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Thanks to all. I will experiment and report back. I never would have used the iPhone 5 in any real way but the sound quality from the iPhone 7 is very nice. When the 2.0 software comes out It would be great fun to be able to ragchew from our mountainside camp site over the cellular network. 

Could some one explain in a ballpark kind of way,  how much data it is going to use to run a Flex over a cellular system? I'm a new demographic for Flex in that I was never a computer or tech guy... When the 6000 series came out and streamlined the process I took the plunge into SDR and am glad I did. 

I don't know the correct language to use when asking this question but a simple answer something along the lines of, " A few 10 min QSOs around the campfire isn't going to be a big deal, but if you  stay up late several nights in a row talking with your 40  80 and 160 Meter round table buddies, you are likely to get a note from your cellular provider..."  would be helpful 
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Tim - W4TME, Customer Experience Manager

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Could someone explain in a ballpark kind of way,  how much data it is going to use to run a Flex over a cellular system?

It depends.  The bandwidth used is dependent on several factors, the most critical is how much display data you are getting from the radio.  In a mostly default mode, I see about 1.3-1.5 Mbps with one panafall and one slice.  If I decrease the frame rates of both the panadapter and the waterfall, I have seen rates as low as 500 kbps.
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WV9L

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I have AT&T. I recently went to the unlimited plan as i have 8 devices on my account now. (I added a cellular ipad mini, and both my parents cell phones, as they were carrying old flip phones....lol). But, i have an hr commute to and from work every day. I also use it on weekends when away from home. I averaged 6gb of data usage per month, with all my email and other activities. I hope that helps you with an idea.
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KY6LA - Howard, Elmer

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I have been using SmartSDr for iOS from all over the world mostly via 4G cell Phones as WIFI Hotspots to my iPad. It typically costs me about €8.00 / Gb for data (USD$9,00) as long as I avoid AT7&T RIdiculous $150/Gb roaming charges.

If you slow down the screen frame rate and waterfall rates a lot, or better yet stop the waterfall, u can talk for hours like I do without using even anywhere near 1Gb/hr. If ur in the USA and have a fixed data plan you can tune SmartSDR for iOS so that you can talk for hours every day and not run out of data.
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Ria - N2RJ, Elmer

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I pay $10 per day for unlimited from Verizon. Free in Mex and Can.
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KY6LA - Howard, Elmer

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@Ria

AT&T Also offers a similar $10/day unlimited International Roaming plan PER DEVICE which is a good deal if you are out of the USA for a day or 2. But it quickly adds up if you travel for say a month ($300/month/device) or 3 like we do.

We typically have 5 devices (2 iPhones, 2 iPads, MacBook) with us that require internet connections so I would be looking at $1,500/month instead we carry a couple (actually 3 in case kids or grandkids show up) of MIFI Boxes (hotspots) with EU SIMS.

ORANGE France just announced a 10GB plan for €40 or €4/GB with a SIM you can drop into a MIFI Box

Effective May 18,2017 in France and June 15,2017 in the EU, the EU has banned cell phone companies from charging Roaming Fees for EU Phones so that $10/day USA international Roaming Charge is very expensive. If you are in the EU you are far better off picking up a EU SIM. The roaming fees ban current applies to U.K. phones as well but not sure if it will survive BREXIT.
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Ria - N2RJ, Elmer

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I also use foreign SIMs but in a pinch I found the roaming to be useful when my data allowance ran out.

In BA on most carriers you would only get 50mb per day at full speed. 50 meg PER DAY. Since my landlady didn't get the Internet fixed I had to use my phone to prevent me from going stir crazy. Roaming at $10 per day for a few days made sense.

Korea was a bit better, 1GB for about ₩30,000.

9Y I have access to a postpaid account which is good for most of the Caribbean (free roaming).

I used to carry my ATT work phone with roaming they pay for. Decided against last time as I needed to completely disconnect.

BTW per device is not a problem as the iPhone has the hotspot feature which I use domestically anyway.
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Ken - NM9P

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If you are trying to run remote via VPN or are trying an alpha version of SSDR-IOS that uses SmartLink, these suggestions may help:

You may be having bandwidth restriction problems on the uplink from the rig.  You really need about 1.5-3 Mb/s uplink from the rig to be able to use the Waterfall much, have two panadapters or slices open, or have DAX running.

Try to pare down your required bandwidth by:

1) Turning the Waterfall OFF and setting the waterfall RATE to zero.  Simply turning the waterfall switch in SSDR-IOS to OFF doesn't reduce all of the bandwidth drain caused by the waterfall.  You must turn the rate down.

2) Turn DAX feeds OFF on your receiving slices.  Both regular DAX RX Audio and DAX I/Q streams consume large amounts of bandwidth.

3) Turn the panadapter FPS rate down.  Sometimes I can use 15 FPS, but other times I must turn it down to 6-8 to get stable performance with my limited connection speed.

4) Reboot your Internet modem, router, and your iPad/iPhone and let everything get a clean start.

5) Check your QOS or Bandwidth restrictions on your router to see if there is a problem there.

6) As Ria has said, check your jumpers between modem, router, switch, and Rig.  Some cheap ones will show one-to-one continuity for all 8 lines, but the twisted pairs are not paired up correctly.  This will lead to cross-talk and reduced performance.


If you are trying to connect via your LAN/Wifi, then you also need to try the suggestions above.
But also try checking the following.....(in no particular order).


7) Check your WiFi channels to see if there are other Wifi devices causing interference.  

8) Some bluetooth devices will interfere with certain 2.4 GHz WiFi channels. turn any bluetooth off and try another test.

9) As WV9L said - Try the 5 GHz WiFI Connection and see if it performs any better.

Ken - NM9P