ZUM Radio ZUMspot User manual

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 1 Rev 1.0
ZUMspot Duplex Kit User Guide
The ZUMspot Duplex Kit has all of the capabilities of the original ZUMspot, but it also enables a duplex
connection between your hotspot and HT. This will allow you to switch to a different talk group from
your HT even if the current talk group is tying up your hotspot.

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 2 Rev 1.0
Table of Contents
Table of Contents..........................................................................................................................................2
Board specifications......................................................................................................................................3
Setup.............................................................................................................................................................3
Powering up..................................................................................................................................................4
Setup Pi-Star..................................................................................................................................................4
Wi-Fi..........................................................................................................................................................4
Configuration ............................................................................................................................................8
DMR with Duplex ......................................................................................................................................9
Enable D-Star ..........................................................................................................................................11
Finishing setup ............................................................................................................................................12
Firmware update.........................................................................................................................................13
Building firmware on Pi-Star.......................................................................................................................15
Support .......................................................................................................................................................16

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 3 Rev 1.0
Board specifications
ZUMspot Kit Features:
High performance 32-bit ARM processor
ZUMspot Board Fully Assembled And Tested
Supports DMR, P-25, D-Star, System Fusion and NXDN
Supports DMR/Fusion full duplex operation
Onboard LEDs to show status (Tx, Rx, PTT, Mode)
Up to 10mW RF power
SMA antenna connectors, UHF antennas included
Mounts cleanly on all current Raspberry Pi’s including the Pi Zero WH
Works on ODROID boards
The open source firmware (MMDVM) is pre-loaded and is easily upgraded via software
Built-in 1.3" OLED display
Connection for Nextion LCD display
1 Year Warranty
Setup
●The ZUMspot Duplex Kit should come with the following:
○ZUMspot Duplex board
○Raspberry Pi Zero
○Pre-programmed SD card
○4 plastic screws
○4 plastic standoffs
○4 plastic nuts
○2 right angle UHF antennas
●Make sure the SD card is inserted into the Raspberry Pi Zero
●Install each antenna into each RF connector, and position them 90 degrees away from each
other as shown below

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 4 Rev 1.0
Powering up
●Plug a USB micro power cable to your ZUMspot Duplex Kit. The USB power port is the right most
USB port on the Raspberry Pi Zero. The USB cable should also be connected to a USB power
supply.
Setup Pi-Star
Wi-Fi
●Power up the ZUMspot Duplex Kit.
●After 3 minutes, scan for Wi-Fi access points from your phone or laptop. One should appear with
the name Pi-Star-Setup
●Connect to it. When asked for the Wi-Fi password type in: raspberry
●After 3 minutes, go to your web browser (Chrome, Firefox, etc.) and connect to the website:
http://pi-star (for Windows, Linux and Android devices
http://pi-star.local (for macOS and iOS devices)
●You should see this page. Go to Configuration

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 5 Rev 1.0
○You will be asked to put in the default username which is pi-star and the default
password which is raspberry
○Select Configure Wi-Fi and then click on Scan for Networks (10 secs)

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 6 Rev 1.0
●Select your Wi-Fi SSID and enter your password.

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 7 Rev 1.0
●Click on Save (and connect) to save the Wi-Fi configuration
●Reboot your ZUMspot Duplex Kit
●Now you can continue to the Configuration section below.

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 8 Rev 1.0
Configuration
●Change the “Node Callsign” to your own, set the System Time Zone to your time zone, and set
the Dashboard Language to the language you prefer.
●Click Apply Changes when you are done
●When everything reloads, you will need to set the Radio/Modem Type to ZUMspot - Duplex
Raspberry Pi Hat (GPIO) and click Apply Changes again.

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 9 Rev 1.0
DMR with Duplex
Once you have completed the Configuration steps. You can finish setting up your ZUMspot Duplex Kit
with DMR using a duplex connection
●Turn on DMR and confirm that Controller Mode is set to Duplex and then click on Apply
Changes

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 10 Rev 1.0
Set the RX and TX frequencies to be used.
oNOTE: For best performance, the frequency offset between RX and TX should be at least
5MHz, but 10MHz is recommended
Enter your DMR ID
Choose your preferred DMR master server
Click Apply Changes in order to save your settings
You can now use DMR with a duplex connection with your ZUMspot Duplex Kit

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 11 Rev 1.0
Enable D-Star
Now you can turn on D-Star by selecting the D-Star Mode switch and clicking Apply Changes
●You can now use D-Star with your ZUMspot Duplex Kit

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 12 Rev 1.0
Finishing setup
Once you have completed the Pi-Star configuration you can start using the ZUMspot Duplex Kit to
connect to D-Star, DMR and other networks.
There is more information on configuring and using Pi-Star in this document.
https://amateurradionotes.com/images/1-Playing_with_Pi-Star.pdf

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 13 Rev 1.0
Firmware update
The firmware can be updated directly from the Pi. A script needs to be download to flash the board.
Go to Configuration->Expert->SSH Access
Login to pi-star
Run command rpi-rw
Run command:
curl -OL https://raw.githubusercontent.com/veraabad/ZUMspot_Update/master/install_fw_duplex.sh
If you get an error saying “Could not resolve host”, it likely means that your network is
setup for IPV6 and the Pi has not been able to acquire the IPV4 nameserver via DHCP.
Try the following. Otherwise skip to the “sudo chmod” step
oRun command sudo vi /etc/resolv.conf
oMove cursor to the end of the line that starts with “nameserver” and then press
the “a” key on your keyboard in order to move the cursor over
oPress Enter to start typing on a new line, and then type this in:
nameserver 8.8.8.8
oPress the ESC key on your keyboard
oThen type the following:
:wq
oThen press Enter

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 14 Rev 1.0
You should now have exited the text editor. You can try the curl command again and it
should work now
Next type the command followed by the enter key
sudo chmod +x install_fw_duplex.sh
Then type the command followed by the enter key
./install_fw_duplex.sh
The flashing script will take care of the rest. Once the script is done it will reboot Pi-Star.

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 15 Rev 1.0
Building firmware on Pi-Star
Go to Configuration->Expert->SSH Access
Login to pi-star
Run command rpi-rw
Make sure the necessary software tools are installed by running these commands:
sudo apt-get install gcc-arm-none-eabi gdb-arm-none-eabi libstdc++-arm-none-
eabi-newlib libnewlib-arm-none-eabi
Install updated stm32flash utility by running these commands:
ocd ~
ogit clone https://git.code.sf.net/p/stm32flash/code stm32flash
ocd stm32flash
omake
osudo make install
Download the firmware sources by running these command:
cd ~
git clone https://github.com/juribeparada/MMDVM_HS.git
cd MMDVM_HS/
git submodule init
git submodule update
cp configs/ZUMspot_duplex.h Config.h
Build the firmware by running this command:
make
Stop services by running these commands:
sudo pistar-watchdog.service stop
sudo systemctl stop mmdvmhost.timer
sudo systemctl stop mmdvmhost.service
Upload the firmware to ZUMspot RPi board:
sudo make zumspot-pi

ZUMspot Duplex user guide
Copyright 2019-2022 ZUM Radio, Inc 16 Rev 1.0
Support
MMDVM groups.io group:
https://groups.io/g/OpenDV
Pi-Star support forum:
https://forum.pistar.uk/
Pi-Star Facebook support group:
https://www.facebook.com/groups/pistar/
Pi-Star Wiki:
http://wiki.pistar.uk
ZUM Radio Facebook group:
https://www.facebook.com/groups/249802742395450/