Home | MicroHAMS

An acoustic coupler modem from the 1970s - the precursor to modern audio interfaces

January Meeting: Modernizing the RF data path

This month's meeting topic asks the question, "It's 2026 - why are we still using acoustic couplers?" Digital software used in amateur radio often asks us to configure a microphone and a speaker to transport data to/from the radio. In the age of radios with high speed USB ports and Ethernet jacks, why are we still operating like it is 1979?

Current & Upcoming

Featured

Recent Articles

DXpedition

January 2026 DXpeditions: What's On the Air

A roundup of active and upcoming DXpeditions for January 2026, including the landmark KP5 Desecheo activation and operations from the Maldives, Kenya, Grenada, and more.

January 16, 2026

field-day

Building Helical Resonator Filters for Field Day Isolation

A summary of practical HF helical resonator filters that can help isolate multiple 20-meter stations during Field Day operations.

October 21, 2025

sdr

Getting Started with Software Defined Radio

An introduction to SDR technology for amateur radio operators, covering basic concepts and popular hardware options.

October 15, 2024

digital-modes

Digital Modes Guide

Comprehensive guide to digital communication modes in amateur radio

October 10, 2024

All Articles →

About MicroHAMS

A dynamic organization of amateur radio enthusiasts in the Puget Sound area dedicated to inspiring, informing, and educating through hands-on experimentation.

Learn More →

Documentation

Technical guides, reference materials, and educational resources for amateur radio operators of all skill levels.

Browse Docs →

Events

Monthly meetings, workshops, and special events featuring presentations from experts and community members.

View Calendar →