speaker mics

Sparkmuseum - Vintage radio and scientific apparatus by john jenkins, include antique radios, Horn Loudspeakers, Vacuum Tubes, A.C. Receivers

Ham Radio Comics - These comic books are produced by Icom America Inc. to promote Amateur Radio to the younger generations, but are still enjoyed by \"old timers\" as well.

Audio filters and speakers - Review of common audio speakers for mobile setups

Current solar images - Images from the Solar Dynamics Observatory and Atmospheric Imaging Assembly

ChuckMartin - RF Supply - RF Wattmeters - RF Power Measurement - Bird Wattmeters Telewave - Coaxial Dynamics Wattmeters - Daiwa Wattmeters

DroidRTTY - DroidRTTY is an Android app to decode and encode Ham Radio RTTY with the build in microphone/speaker or wired to your radio.

Heil Microphones DSP Settings - How adjust DSP settings for your trasmitter when using Heil Sound microphones

Speaker Building - DIY speakers, resources for custom speaker hombrewing

AVR Butterfly Keyer - The Atmel AVR Butterfly is a credit card sized board which contains an AVR MEGA169 processor, a six character LCD display, a five way joystick navigation switch, a piezo speaker, a 3 volt lithium battery cell for power and a few other odds and ends.