---

Implementing a Multi-Function, DTMF Microphone, Based on the HM-133/HM-151 for the IC-901A/E Radio

Updated 03/08/2024

(Back to the Projects page...)

---

!! New: HM-133 Wired Remote for the ICOM IC-901A/E !!

This page provides support information for an IC-901 implementation of the HM-133 DTMF Adapter Project

This is a project which allows the HM-133 microphone (or HM-151) to act as a multi-function, DTMF microphone for the IC-901 radio.

Here is a listing of the various project documents that are directly relevant to the DTMF Adapter:

SiLabs Programming guide

HM-133/151 Microphone Modifications

---