Many customers want to know how to set their digital radios ARPS, to realize Real time positioning. Today let’s take RT3S APRS as an example, to explain the settings step by step.
What’s the Work principle of setting RT3S ARPS?
RT3S transmit GPS information to MMDVM–> MMDVM receive data packet and retransmit to Brandmeister server–> BM server transmit GPS information to APRS.fi–>User see the real time position of GPS radio holder.
How many steps for RT3S ARPS?
1.Setting on your bandmeister account
2.Setting on your hot spot
3.Setting on your RT3S software
4.Transmitting RT3S GPS position
Below please check the details for RT3S APRS settings:
1.Setting on your bandmeister account
A. Register on https://brandmeister.network/
B. Login brandmeister account, set in Selfcare settings Part, as below:
For APRS callsign part: Please check SSID description as below:
For walkie talkie products, we choose-7, so it’s BH6PJL-7.
Click “Save” to Finish this step.
2.Setting on your hot spot
Configuration on p-star Callsign, DMR ID, frequency in P-star
Make sure the”DMR master” is your local ID.
For Latitude and Longitude: please check on https://www.qrz.com/gridmapper
Final your “Zero”position and fix the Grid.
3.Set on RT3S programming software
A.Contacts settings
On https://wiki.brandmeister.network/index.php/China, we find APRS application private Call ID is 460999.We can designate the contact name: such as APRS-RT3S
Set Private contact to be APRS-RT3S.
B.Set communicaiton channel to be reversed to MMDVM (repeater) frequency
Set GPS system
4.Transmit GPS position
A .Normally GPS signal need transmit ourdoor, the effect will be better. Switch radio to channel 1. Wait till GPS signal too be total green( no red point), it stands for GPS position activated.
B.You can see you GPS position Menu>> GPS/Beidou Information
C.Press PTT, GPS information will be transmit to BM server, then BM server transmit to APRS.fi, based on BM settings before, every 60 secends, GPS position information will be automatically send to BM server( after first press, no need press PTT again), but please make sure the current channel no change, which is matching the MMDVM hot spot settings.
D.Search the tracked callsign of the GPS radio holder on APRS.fi website, we will see the GPS track.
E.If you do not want to set GPS position again, just switch to another channel, it will stop sending.
What Retevis radios can set APRS?
Retevis RT3, RT8, RT82, RT3S. All these channels can set APRS. Any other queries about APRS, we can discuss again.
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Ok but, what if we use a repeater?
Many repeater operators may not let private calls or TG 310999 in US pass through. Thanks!
It reverts back to the hot spot channel. Unless the repeater is Pistar duplex and supports the aprs data.
This is a bit of a kludge, a work around to sort of appear to have APRS when it’s not APRS at all. Would you please investigate a dedicated APRS feature that is capable of transmitting on it’s own VFO frequency / Channel how APRS is meant to work. I’d buy several radios that can perform APRS correctly on an Analogue frequency without needing a repeater to make it to work, or requires me to manually send the packets out.
I have 8 Retevis radios and I think they are significantly better value for money than nearly all the big brands, and they are built to a really robust standard. This is fantastic for radio hams and even some commercial users too.
Thanks, we will learn more about this.
Can the newer RT52 do APRS?
sorry, this RT52 don’t support the APRS
the RT3S non GPS version can do the APRS settings or modes?
no, if you want to do the ARPS Settings, you need to choose the GPS version.
Estou ajudando um colega que tem dois radios RT3S esta mandando pacotes na rede brandmeister tudo perfeito, mas nao aparece no aprs.fi a latitude no painel do radio esta certa a longitude aparece diferente do que é na minha regiao
I have set up my RT3S GPS as instructed.
The radio is reading the coordinates, and transmitting every 60 seconds.
I have set up MMDVM as instructed.
I do no appear on APRS.fi.
I have also tried with OpenSpot3.
Where may I have gone wrong?
Perhaps at the BM or APRS end?
Hello! Please have a look at this:https://www.twowayradiocommunity.com/index.php/how-to-set-rt3s-aprs/
can you do this with the RT72?
sorry, RT72 don’t support the APRS
Hi am I able to set up the RT52gps for aprs ?
sorry, RT52 don’t support the APRS
Puedo hacer lo mismo con Ailunce hd1?
Hi thanks for posting this incredible information.
The only question I have is that I don’t have a dual hotspot.
In the instructions you say to have the repeater frequencies reversed.
I was going to try with just the hotspot simplex frequency.
Any further information about the setup would be greatly appreciated.
Thanks 73’s HarryVK4TK