One of the most underutilised by very cool feature that comes with some digital networks is the ability to send and receive SMS messages. You can send it fairly easily to another radio, but did you know you can also receive a weather report, see where your last GPS transmitted location is, and send messages to your mobile phone. The best thing is there no cost either.
While not all networks and not all radio’s support sending SMS’s. Some hotspots do and some done also just to make it even more confusing. While I don’t plan to list all networks available, as they there are more all the time, and the settings change also. However, at the time of writing this (2020), the VK-DMR network does not support GPS or SMS (you must turn it off to use the system), but the BrandMeister one does. So, I will talk from here on about the BrandMeister network. If you use a different network, then check with that network first.
First you need to setup your BrandMeister account to send and receive SMS. From the BrandMeister page, login at the right of the screen. Then under Services on the left side, select selfcare. I usually set the radio brand to either ETSI or Motorola, however this will depend on the radio you have. While you are here, you might want to turn on or off your GPS location and check everything looks good.
Would you believe most digital radios allow you to send and receive messages right from the screen easily. However not all. Unfortunately, at the time of writing this (2020), the OpenGD-77 does not support text messaging as yet. However, it is on the job list. I do understand that since text messaging isn’t the most used option in digital radio, probably leaving this setup until last is fair enough. However, I have done it on the original GD-77 firmware, and seen it done on other radio’s also.
If your fortunate enough, you may have a hotspot that can do it anyway.
I am not going to talk about every hotspot available, mainly because I don’t own every hotspot available. But I will talk about the OpenSpot as I have a couple of them myself, and I know they work.
From a PC, the menu on the right side has DMR SMS chat that will bring up a box much like the picture below.
262993 GPS and Weather
If you send the message help to destination ID 262993 you will get a prompt much like above. It may take a little while to reply. As I live in Melbourne, you can see above I then sent a private message to 262993 again and typed in the message wx Melbourne, AU. You can see above the message on the left I received. Remember, the reply’s do take a while to come back and usually arrive just as you have given up waiting!
You could also send the message gps help to the same number, 262993, to get an overview of all the GPS commands which includes setting your home position, and so on. If you have transmitted your GPS location with the same callsign you set up in the selfcare then it will reply with your last location sent. If you want to save that as your home location, send GPS SET and it will save your last location as your home location. Then you will get from now on your home location and your last transmitted location.
If you send RSSI to 262993 it will reply with the repeater and connected talk group you were last using. If you send a message INFO *callsign where *callsign is replaced with your call sign you will get a reply when you last spoke. If you have two digital ID numbers, then it will send both of them back to you.
262994 Repeater, POCSAG and dapnet
If you send RPT SMS to 262994 you will get a reply of what static talk groups you are currently connected to.
You can also send a message to a call sign using this 262994 number. For example, if you want to send a message to me, send VK3TBS followed by your message to number 262994. However, I couldn’t get this to work – maybe because I was messaging myself! If you get it to work, please let me know what I did wrong.
262995 SMSC – SMS-ing to a mobile phone
This is taking SMS-ing to the next level. I was even able to SMS my wife who doesn’t have a licence.
To do this, send the following message SMSGTE @[phone number] [message] to 262995. where [phone number] is your country number (e.g. 61 for Australia) followed by the mobile number. Remember to remove the first 0 if you’re in Australia.
There is more information on sending messages to and from your radio to mobile phones on the smsgte.org web site. There is heaps of information under the User Guide menu.
APRS is almost a bit easier and can quickly send messages to and from a mobile phone. Once you have done the above setup, I selected APRS chat in my OpenSpot2 dashboard. Then I sent a message with the destination callsign of SMSGTE then the message was @[phone number] [message] there [phone number] is your country number (e.g. 61 for Australia) followed by the mobile number. Remember to remove the first 0 if you’re in Australia.
You can see in the picture below I sent a message Test from hotspot to my phone which appeared instantly. I then sent one back from my phone saying This is from my mobile phone which then appeared instantly. It worked really well.
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