Medical Amateur Radio Council

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What is MARCO?

The Medical Amateur Radio council is a group that promotes good will and fellowship among amateur radio operators worldwide, who are professionals in the healing arts, or who have an interest in the various medical, dental and allied fields which constitute the healing arts. Many of us are Health Care Hams!

For access to our Aether newsletter archive, member directory and other member only content please consider becoming a member.  Click on Join MARCO to do so.

Please also visit our legacy site at www.marco-ltd.org

We Meet on the Air to Share

The MARCO organization is open to all licensed amateur radio operators who are healthcare professionals, work in a related field, or are interested in health related topics.  MARCO conducts a weekly Grand Rounds on the Air (20m) net to discuss health related or ham radio topics and stream the audio online at www.marcoaudio.net.  Zoom simulcasts are often used to allow members without HF equipment to participate.

YouTube videos are made from these Zoom sessions, produced for the public, located at 

https://www.youtube.com/@HealthCareHams

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Upcoming events

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Featured member

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  • The World Cup and the Hedonic Effect

    12 Jun 2026 10:22 AM | Anonymous member (Administrator)

    The slides for this Sunday's ( June 14th) Grand Rounds on the Air can be viewed by clicking here


  • Memorial Day 2026 Program

    24 May 2026 5:56 AM | Anonymous member (Administrator)

    Slides for our special Memorial Day Program can be viewed by clicking here.  We are honoring those who defended our country and made the ultimate sacrifice, noting those who were amateur radio operators.

  • Women in Amateur Radio May 10th

    07 May 2026 5:36 AM | Anonymous member (Administrator)

    In honor of Mother's Day we will hold a special Grand Rounds on the Air roundtable discussion on Women in Amateur Radio.  For those on 20m slides are available by clicking here.  

    A Zoom simulcast will be held for members.  The link will be sent by email.  Consider having the mothers in your life attend, and then honor them with attention in the afternoon.

  • Slides for the May 3rd Grand Rounds session on Psychedelics

    01 May 2026 5:45 AM | Anonymous member (Administrator)

    The slides for this session of the Grand Rounds on the Air net can be accessed by clicking here.


  • Slides for Today's Grand Rounds on Peptide Mania

    19 Apr 2026 3:25 AM | Anonymous member (Administrator)

    Peptide Mania, click here for the slides for today's Grand Rounds.  The slides contain the active links to background information


  • Slides for today's Grand Rounds on Colorectal Cancer

    29 Mar 2026 9:03 AM | Anonymous member (Administrator)

    The demographics of colorectal cancer are changing.  Why?  We discuss this topic on 17m today using the following slides as a prompt...

    Click for the slides

  • Slides for today's net on Ecotourism and Health

    22 Mar 2026 9:18 AM | Anonymous member (Administrator)

    Click for the PowrPoint slides

  • Slides for today's Grand Rounds on the Air

    22 Feb 2026 8:57 AM | Anonymous member (Administrator)

    What is particulate matter?  What health risks are created by it's presence?  Who is subject to these risks?

    Click here for the slides used as prompts for today's discussion on shortwave (ham) radio

  • Christmas and the Holiday Season - Joy and Celebration. Stress?

    21 Dec 2025 9:12 AM | Anonymous member (Administrator)

    Our Grand Rounds on the Air roundtable today covers The Christmas and Holiday Season and the sources of joy, celebration, and what to look for in potential stress.  There is a Zoom session for those who are HF challenged.

    The document discussion is prompted from can be viewed, with links to source material, by clicking here.


  • Slides for this weekend's Grand Round Net on Dry Heat Sauna

    13 Dec 2025 7:16 AM | Anonymous member (Administrator)

    To view the slides while on HF for on-the-air discussion click here

    This weekend on Sunday December 14th at 11 am eastern the Grand Rounds discussion will be led by Dr. Bob Conder, K4RLC, who is a Neuropsychologist.  He will discussing Sauna - Health and Happiness from Dry Heat.  This is one of Bob's academic interests that touches his personal life so the topic presented should be fascinating.


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MARCO - Medical Amateur Radio Council

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