P17311: Radio-IP Hotspot Transceiver

Problem Definition

Table of Contents

Team Vision for Problem Definition Phase

For this phase, we planned to understand the project in general and the expected end result. The plan was to look into overall design requirements from the customer and get general sense of software and hardware components required. KiCad software was identified to be an important tool for board layout and design. All team members are expected to be familiar with KiCad.

We completed the problem definition, use scenarios, customer and engineering requirements, house of quality and constraints for the project along with plans for next phase as a team and an individual.

Project Summary

Ham radio has been around for a really long time. The term ‘ham’ is a shorter word for ‘amateur’. It has been connecting people over very long distances and has been used for a variety of purposes. In this project, an IP Transceiver/Hotspot is built for use with ham radio. Radio over internet protocol has improved communication between two points. With an IP Transceiver, a radio would be able to connect to any other radio connected to the internet. Because of this, there are virtually no distance restrictions as long as there is internet access. A project has been done using Raspberry PI, external USB hardware adapters, radio and open sourced software (asterisk) on radio networks.

The goal of the project is to look through designs implemented using external USB hardware adapters and radios and combine everything into one board. The result would be a daughter board with radio/IP hotspot transceiver module for raspberry PI. All-star Link software should be used in this project and the daughterboard should only contain chipset commonly found in devices approved by FCC.

Use Cases


Project Goals and Key Deliverables

The goal of the project is a device that will operate as an all-star node.

Key Deliverables

Customer Requirements (Needs)


Live Document

Engineering Requirements (Metrics & Specifications)


Live Document


  1. Budget : $500
  2. Range : 1000 ft
  3. Low power : 100mW & High Power: 1W
  4. Audio Chip : 1 input/output channel
  5. Input Voltage : 5V platform ( 12V if there is room but have to convert to 5V )
  6. Size : Has to fit existing Raspberry PI case

House of Quality


Live document


The table below shows benchmarking data for the USB hub IC, the RF filtering and RF module. https://edge.rit.edu/edge/P17311/public/Problem%20Definition%20Documents/benchmarking.png Link to live document

Plans for next phase

The Gantt chart for phase 2 is shown below: https://edge.rit.edu/edge/P17311/public/Problem%20Definition%20Documents/Phase2Plan.png

At the end of phase 2, we expect to all be able to use the software tools that we will need for the rest of the design, such as Kicad and LTSpice. We also expect to have the necessary data added to the edge website documenting our progress. In addition, we expect to have completed block diagrams for the system as a whole as well as most of the individual subsystems that will comprise the system.

Culpepper's Phase Plans

  1. Did not produce a phase plan for phase 1.
  2. Phase 2 Plan

Jerome's Phase Plans

  1. Did not produce a phase plan for phase 1.
  2. Phase 2 Plan

Damo's Phase Plans

  1. Did not produce a phase plan for phase 1.
  2. Phase 2 plan

Ali's Phase Plans

  1. Did not produce a phase plan for phase 1.
  2. Phase 2 Plan

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