I am currently collecting part to complete this project. Once i have everything needed for this project it will be completed and put on air. Until then a low powered hotspot will operate in its place. When it makes it to the on-air stage it will operate in a dual time slot/duplex format.
Items to be sources
|UHF Radio (400-470 MHz)||2||One for Receive
One for Transmit
|VHF Radio (136 – 150 MHz)||1||For Receive and Transmit as this will be a simplex gateway||2|
|MMDVM Radio Board
|2||Interface between the Radio’s and the computer connected to the internet that has Multi-Mode capabilities||1|
|Raspberry Pi 4||2||One RPi for VHF and One for UHF||1|
|Dual Band Antenna for 2m/70cm||1||Dual Band Antenna as both VHF and UHF will be on the same site||–|
|J-Pole for 2m||1||J-Pole for 2m VHF
( Initial Antenna for HotSpot )
|RG-213 coax feed line||20m
|To get the signal to and from the radio’s||1|
|VHF/UHF Splitter||1||To split the VHF and UHF signals at the repeater end of feed line||1|
|UHF Cavities||1||To join but keep the UHF signal from the Transmitter from desensitizing the receiver||–|
|Patch Lead RG-213 Feed Line||3||To connect the radio’s, cavities and spliter together for feeding to the antenna feed line and the antenna||–|
|13.8 V DC 25 Amps
Power or Battery Supply
|1||To power the Radio’s and Raspberry Pi’s||1|
|DC-DC Converter (5V DC 3 Amp)||2||To convert power for the Raspberry Pi’s||1|
This is a short list of items needed to complete this project. More items and information will be added as the project progresses. I will also include what I have done to get this project up and running.
The HotSpot will operate D-Star, DMR and YSF (Yaesu Fusion) on 2m. The plan is for DMR and maybe a few other modes on 70cm. I also have a plan for POCSAG on 70cm.