Search this site
Embedded Files
MDARC
  • Home
  • Membership
  • Meetings
    • General Meetings
    • Speakers
      • Speakers 2023
      • Speakers 2021-2022
      • Speakers 2019-2020
      • Speakers 2017-2018
      • Speakers 2015-2016
    • Board Meetings
    • Technical Meetings
    • Pacificon Meetings
    • Digital Media Meetings
  • Education and Testing
    • Class Details
    • License Testing
    • Auxiliary Classes
    • On-Line Resources
    • Exam.Tools
  • Public Service
  • Repeater Systems
    • ATV
    • Digital Voice
      • Comparison of DV Modes
      • D-Star
        • D-Star Linking
        • D-Star Registration
      • DMR
      • C4FM (Fusion)
      • M17
    • EchoLink & IRLP
    • Repeater Rules
    • Repeater Weather
    • Meshtastic
  • About Us
    • COVID Statement
    • Club Announcements
    • Committees
    • Communicating with You
    • Contact Us
    • History of the Club
      • Award Recipients
      • Charter Members
      • History Summary
      • Photos, Videos
      • Members-Special
      • News of the Club
      • Past Officers
      • QSL Cards
      • Rocky Ridge Group
      • Silent Keys
      • W6CX
      • W6LGW
    • Join/Renew/Update
    • Officers & Chairs
    • Official Documents
      • Articles of Incorporation
      • Bylaws
      • Equipment Selling
      • Groups.io Guidelines
      • Policies
      • Privacy Policy
      • Record Retention Policy
      • Terms of Use
      • Zoom Guidelines
    • Store
    • Managing Gmail
    • Managing Groups.io
  • Carrier Newsletter
  • Activities
    • Auction
    • Campout Party
    • Digital Systems
      • DMR
      • NBEMS
      • Winlink
    • DX & Contests
    • Emergency Communications
      • Wilderness Protocol
    • Field Day
    • Holiday Banquet
    • Leap Day Net
    • Nets on MDARC Systems
    • Nets on Other Systems
    • Pacificon Table
    • Vehicles
      • Trailer
      • Van
  • Operating Aids
    • Azimuthal Map
    • Calling Frequencies
    • CTCSS (PL)
    • Greek Alphabet
    • Latitude, Longitude, UTM
    • Lending Library
    • LSB or USB?
    • Metric System
      • Metric Units
      • Metric Prefixes
      • Metric Conversions
    • Morse Code
    • Operating Procedures
    • Phonetic Alphabet
    • Q-Signals & Prosigns
    • Roman Numerals
    • RST System
    • UTC Time
    • Weather Channels
  • Resources
    • Basics
    • Clubs in NorCal, NV
    • Donate to MDARC
    • Equipment
      • Dipole Length Calcs
      • Dipole Tuning
      • HF Equipment
      • IP Codes
    • Getting Started in Ham Radio
      • 1. License Class Description
      • 2. Getting Your First License
      • 3. Upgrading Your License
      • 4A. Getting On the Air
      • 4B. Getting On the Air-HF
      • 5. Choosing Your First Radio
      • 6. What Do Hams Do
      • 7. Where did “Ham” Come From?
    • Glossary
    • Links of Interest
    • Other Ham Groups
  • Regulations
    • Amateur Radio Bands
    • Amateur Radio Regulations
    • Emission Designators
    • FCC Monitoring Stations
    • License Copy Acquisition
    • Line A, Line C
    • Obtain an FRN
    • Secondary Status
    • Spectrum
  • Safety
    • Electric Current in the Human Body
  • Technical
    • Coax & Ladder
    • Conductor Properties
    • Constants and Formulas
    • Decibels
    • Peak Envelope Power
    • Periodic Table
    • Schematic Symbols
    • Skin-Effect
MDARC
  • Home
  • Membership
  • Meetings
    • General Meetings
    • Speakers
      • Speakers 2023
      • Speakers 2021-2022
      • Speakers 2019-2020
      • Speakers 2017-2018
      • Speakers 2015-2016
    • Board Meetings
    • Technical Meetings
    • Pacificon Meetings
    • Digital Media Meetings
  • Education and Testing
    • Class Details
    • License Testing
    • Auxiliary Classes
    • On-Line Resources
    • Exam.Tools
  • Public Service
  • Repeater Systems
    • ATV
    • Digital Voice
      • Comparison of DV Modes
      • D-Star
        • D-Star Linking
        • D-Star Registration
      • DMR
      • C4FM (Fusion)
      • M17
    • EchoLink & IRLP
    • Repeater Rules
    • Repeater Weather
    • Meshtastic
  • About Us
    • COVID Statement
    • Club Announcements
    • Committees
    • Communicating with You
    • Contact Us
    • History of the Club
      • Award Recipients
      • Charter Members
      • History Summary
      • Photos, Videos
      • Members-Special
      • News of the Club
      • Past Officers
      • QSL Cards
      • Rocky Ridge Group
      • Silent Keys
      • W6CX
      • W6LGW
    • Join/Renew/Update
    • Officers & Chairs
    • Official Documents
      • Articles of Incorporation
      • Bylaws
      • Equipment Selling
      • Groups.io Guidelines
      • Policies
      • Privacy Policy
      • Record Retention Policy
      • Terms of Use
      • Zoom Guidelines
    • Store
    • Managing Gmail
    • Managing Groups.io
  • Carrier Newsletter
  • Activities
    • Auction
    • Campout Party
    • Digital Systems
      • DMR
      • NBEMS
      • Winlink
    • DX & Contests
    • Emergency Communications
      • Wilderness Protocol
    • Field Day
    • Holiday Banquet
    • Leap Day Net
    • Nets on MDARC Systems
    • Nets on Other Systems
    • Pacificon Table
    • Vehicles
      • Trailer
      • Van
  • Operating Aids
    • Azimuthal Map
    • Calling Frequencies
    • CTCSS (PL)
    • Greek Alphabet
    • Latitude, Longitude, UTM
    • Lending Library
    • LSB or USB?
    • Metric System
      • Metric Units
      • Metric Prefixes
      • Metric Conversions
    • Morse Code
    • Operating Procedures
    • Phonetic Alphabet
    • Q-Signals & Prosigns
    • Roman Numerals
    • RST System
    • UTC Time
    • Weather Channels
  • Resources
    • Basics
    • Clubs in NorCal, NV
    • Donate to MDARC
    • Equipment
      • Dipole Length Calcs
      • Dipole Tuning
      • HF Equipment
      • IP Codes
    • Getting Started in Ham Radio
      • 1. License Class Description
      • 2. Getting Your First License
      • 3. Upgrading Your License
      • 4A. Getting On the Air
      • 4B. Getting On the Air-HF
      • 5. Choosing Your First Radio
      • 6. What Do Hams Do
      • 7. Where did “Ham” Come From?
    • Glossary
    • Links of Interest
    • Other Ham Groups
  • Regulations
    • Amateur Radio Bands
    • Amateur Radio Regulations
    • Emission Designators
    • FCC Monitoring Stations
    • License Copy Acquisition
    • Line A, Line C
    • Obtain an FRN
    • Secondary Status
    • Spectrum
  • Safety
    • Electric Current in the Human Body
  • Technical
    • Coax & Ladder
    • Conductor Properties
    • Constants and Formulas
    • Decibels
    • Peak Envelope Power
    • Periodic Table
    • Schematic Symbols
    • Skin-Effect
  • More
    • Home
    • Membership
    • Meetings
      • General Meetings
      • Speakers
        • Speakers 2023
        • Speakers 2021-2022
        • Speakers 2019-2020
        • Speakers 2017-2018
        • Speakers 2015-2016
      • Board Meetings
      • Technical Meetings
      • Pacificon Meetings
      • Digital Media Meetings
    • Education and Testing
      • Class Details
      • License Testing
      • Auxiliary Classes
      • On-Line Resources
      • Exam.Tools
    • Public Service
    • Repeater Systems
      • ATV
      • Digital Voice
        • Comparison of DV Modes
        • D-Star
          • D-Star Linking
          • D-Star Registration
        • DMR
        • C4FM (Fusion)
        • M17
      • EchoLink & IRLP
      • Repeater Rules
      • Repeater Weather
      • Meshtastic
    • About Us
      • COVID Statement
      • Club Announcements
      • Committees
      • Communicating with You
      • Contact Us
      • History of the Club
        • Award Recipients
        • Charter Members
        • History Summary
        • Photos, Videos
        • Members-Special
        • News of the Club
        • Past Officers
        • QSL Cards
        • Rocky Ridge Group
        • Silent Keys
        • W6CX
        • W6LGW
      • Join/Renew/Update
      • Officers & Chairs
      • Official Documents
        • Articles of Incorporation
        • Bylaws
        • Equipment Selling
        • Groups.io Guidelines
        • Policies
        • Privacy Policy
        • Record Retention Policy
        • Terms of Use
        • Zoom Guidelines
      • Store
      • Managing Gmail
      • Managing Groups.io
    • Carrier Newsletter
    • Activities
      • Auction
      • Campout Party
      • Digital Systems
        • DMR
        • NBEMS
        • Winlink
      • DX & Contests
      • Emergency Communications
        • Wilderness Protocol
      • Field Day
      • Holiday Banquet
      • Leap Day Net
      • Nets on MDARC Systems
      • Nets on Other Systems
      • Pacificon Table
      • Vehicles
        • Trailer
        • Van
    • Operating Aids
      • Azimuthal Map
      • Calling Frequencies
      • CTCSS (PL)
      • Greek Alphabet
      • Latitude, Longitude, UTM
      • Lending Library
      • LSB or USB?
      • Metric System
        • Metric Units
        • Metric Prefixes
        • Metric Conversions
      • Morse Code
      • Operating Procedures
      • Phonetic Alphabet
      • Q-Signals & Prosigns
      • Roman Numerals
      • RST System
      • UTC Time
      • Weather Channels
    • Resources
      • Basics
      • Clubs in NorCal, NV
      • Donate to MDARC
      • Equipment
        • Dipole Length Calcs
        • Dipole Tuning
        • HF Equipment
        • IP Codes
      • Getting Started in Ham Radio
        • 1. License Class Description
        • 2. Getting Your First License
        • 3. Upgrading Your License
        • 4A. Getting On the Air
        • 4B. Getting On the Air-HF
        • 5. Choosing Your First Radio
        • 6. What Do Hams Do
        • 7. Where did “Ham” Come From?
      • Glossary
      • Links of Interest
      • Other Ham Groups
    • Regulations
      • Amateur Radio Bands
      • Amateur Radio Regulations
      • Emission Designators
      • FCC Monitoring Stations
      • License Copy Acquisition
      • Line A, Line C
      • Obtain an FRN
      • Secondary Status
      • Spectrum
    • Safety
      • Electric Current in the Human Body
    • Technical
      • Coax & Ladder
      • Conductor Properties
      • Constants and Formulas
      • Decibels
      • Peak Envelope Power
      • Periodic Table
      • Schematic Symbols
      • Skin-Effect

Repeater Systems:  ATV | Digital Voice | EchoLink & IRLP | Repeater Rules | Weather | Meshtastic



Meshtastic

What is Meshtastic?

Meshtastic is an open-source, decentralized, off-grid mesh network. It’s made up of small communicators that can form a mesh network. These communicators can be linked to a phone via Bluetooth or Wi-Fi. Meshtastic uses inexpensive LoRa radios as a long-range communication platform. 

Meshtastic is a new an emerging technology, so it's constantly changing.

Meshtastic operates in the 915mhz/33cm band under part 15 rules; with a good portion of operations being hams. There is a large amount of information on the official Meshtastic website.

Getting Started

Want to get started with meshtastic? We recommend you start with the Bayme.sh getting started guide. The recommended hardware is a great place to start if you're looking for hardware.

Quick tips for using the mesh in the bay area:

  • Most of the SF Bay is on the MediumSlow preset with some testing in the south bay on MediumFast and Sacrament is mixed on LongFast and MediumSlow.

  • Use the Bayme.sh recommended settings.

  • Most people need a "roof" node - a client node located on the roof that acts as a relay for portable nodes. DO NOT USE the Router or Repeater preset on your roof. 900mhz is attenuated significantly  by walls, siding (Some houses have metal backed, concrete or compressed fiberboard that has a lot of attenuation), and trees.

  • Due to the recommended settings, it may take a while for nodes to show up on your list. Most infrastructure nodes don't transmit except for 1-2 times per hour with node information. Try sending a message, and checking out the meshview servers hosted by the local meshtastic groups: Bay Area Meshview   Sac Valley Meshview 

  • Use a 6dbi or more gain antenna if you can. 

  • Use a filter. Ask in the Bayme.sh discord about them, there are a couple of local hams that have them available.

Meshtastic Groups

Bay Area Mesh

The MDARC nodes are a part of the Meshtastic Bay Area Group.  The Meshtastic Bay Area group is a vibrant and welcoming community of enthusiasts passionate about Meshtastic and mesh radio communications, based in and around the San Francisco Bay Area. Our members come from diverse backgrounds but share a common love for exploring and innovating in the world of mesh networks.

Check out the Bay Area Mesh https://bayme.sh  or join their discord https://discord.gg/GpsKbhGJx5 for a thriving conversation. 


Sac Valley Mesh

The MDARC nodes overlap with the Sac Valley Mesh group due to it's location. They are a group focused in Sacramento, Yolo and surrounding Counties.

Check out the Sac Valley mesh https://www.sacvalleymesh.com/ or join their discord https://discord.gg/kk26pjpDhG


Central Valley Mesh

The MDARC nodes overlap with the Central Valley Mesh group  due to it's location. They are a group focused in Fresno and Turlock and surrounding areas.

Check out the Sac Valley mesh https://centralvalleymesh.net/ or join their discord https://discord.com/invite/9KUu5QQqMx


Mesh Maps

What to take a look at the mesh? here's some maps

Bay Area Meshview

Sac Valley Meshview

https://meshtastic.liamcottle.net/?lat=37.83034660061394&lng=237.83271789550784&zoom=10

https://meshmap.net/ (This map may not show full data due to the Meshtastic team's servers censoring data)

MDARC Nodes

MDARC Operates two nodes on Mount Diablo north peak, on both the Longfast and MediumSlow presets.

Both nodes are built and managed by Trevor Raty KG6MDW. If you experience an issue please reach out to him on either the above listed discord servers.

Primary Router

This router is the main router located about 30' up the tower. It consists of the following nodes

  • Diablo W6CX LF  (DBLF) 

    • Station G2 @ 1w

    • LongFast preset w/ tuning per Bayme.sh recommended settings

    • Airframes 4mhz LongFast filter

    • 3dbi L-com HGV-903U antenna 

    • Environmental sensor

  • Diablo W6CX MS (DBLF) 

    • Station G2 @ 1w

    • Medium Slow preset w/ tuning per Bayme.sh recommended settings

    • Airframes 4mhz MediumSlow filter

    • 6dbi L-com HGV-906U antenna 

    • Environmental sensor

  • W6CX-4 LORA APRS Igate/Digipeater

    • Lilygo Lora32 on 433.775 Mhz

    • 6dbi flexible wip antenna (Shared with RTL-SDR)

  • Raspberry pi zero 2 W 

    • Used for remote control and future SAME alerts on metastatic.

    • RTL-SDR connected to 6dbi antenna via a 2m/440 diplexer

Diablo Router on the tower

Primary Router on the bench during testing

Inside of the router box. A very tight space.

Backup Routers

These routers where primary until the above router was installed on the tower. Instead of removing them, we left them as a backup. 

They are currently using ClientMute role, and generally have poor viability to most areas. 


  • Diablo LF W6CX Backup   (DBLB) 

    • Located on building at 5', Heltec v3

    • LongFast preset w/ tuning per Bayme.sh recommended settings

    • 6dbi rubber duck antenna w/ extra weatherproofing. (Bottom antenna)

  • Diablo MS W6CX Backup   (DBLB) 

    • Located on building at 5', Heltec v3

    • MediumSlow preset w/ tuning per Bayme.sh recommended settings

    • MQTT to Bayme.sh MQTT Server

    • 6dbi rubber duck antenna w/ extra weatherproofing. (Top antenna)

Backup router on the building

Groups.io Facebook LinkedIn mdarc & pacificonHome Page Contact Us Join/Renew/Update Policies & Guidelines Website Terms of Use Website Privacy PolicySee an error or omission? Let us know with the url.© Mt. Diablo Amateur Radio Club, 2025.The materials on this website may be copied for noncommercial personal use only.
Report abuse
Page details
Page updated
Report abuse