a new kid in town – microHAM MicroKeyer 2

Inspired by a song of my favorite band The EaglesI can welcome a new kid in my small amateur radio town. No it is not a new girl as it is sung at the Eagles it’s a microHAM microKEYER 2. Reason for the new investment was that I thought about to upgrade to the new Elecraft sound card option „KIO3B“. I was searching for the technical data’s of that Elecraft sound card option but there was now way to get detailed information. I was in contact with the German dealer but also he did get not any technical information. Reading the Elecraft news letter or news groups the only thing I was reading  about has been driver problems. So thinking hard what to do  🙄  – buy a new Elecraft option not knowing if it will work for a 470€ price and having left a unused old Elecraft option that nobody will need/buy ? So a BIG NO at all and „the new kid in town is the microHAM Microkeyer 2“ As I also have some experience with that MK2 from my EME DXexpedition to HBØ back in 2007 where we was using this keyer  I can confirm that the build in sound card is very low noise and ideal for EME and meteorscatter operation. I did modify the original factory cable to support my sequencer with the TX INHIBIT and a PTT OUT. If you need a sequencer working well just ask Olli – DH8BQA he might be able to help you..

MKII_FRONTMKII_REARmicroKEYER II™ is the most powerful All-In-One single radio multi-mode USB interface and sound card for CW, SSB, AM, FM, and digital modes (RTTY, PSK31, SSTV, APRS, PACKET, and many others) available anywhere.

Using a single USB port, microKEYER II can interface with any Windows-based logging or control program to run any FSK, CW , FSK, SSB, AM, or FM mode. microKEYER II also includes a rig control interface (CAT/CI-V) with interfaces for all supported radios, a powerful CW memory keyer, and a buffer for keying a Power Amplifier and LNA switcher.

The features of the microKEYER-II in detail: [source wimo.de]

  • Audio
  • Integrated USB soundcard with high dynamic range and excellent SNR for better decoding
  • Two audio channels for Main/Sub receiver
  • Newly designed microphone matching allows the use of nearly any microphone
  • two microphone connections supported at the same time (e.g. hand mike and headset)
  • Simplyfied ccontrol and selection of audio sources
  • Continously adjustable microphone gain, separated for two microphones
  • Automatic selection of microphone
  • Output power of the soundcard sufficient to drive a headset, for Echolink, VoIP, Skype etc.
  • 2 Watt amplifier for connection of a monitor speaker
  • Separate volume control of the monitor for CW sidetone, DVK and AFSK
  • Display on the front shows status (recording, playback) of the soundcard
  • Automatic microphone muting when using ditial modes
  • Keying
  • Sequencer control for LNA/PTT to switch a separate pre amplifier or receiving antenna
  • VOX support for PA keying
  • Direct support for QSK operation with PA
  • Digital VOX: automatic PTT keying when audio is sent over the soundcard
  • TX inhibit for hotswitch protection ad transmitting under critical conditions (transmit path not ready)
  • Faster (3ms) keying relay
  • Telegraphy
  • K1EL Winkey Chip for precise timing of keying
  • Integrated, high level paddle debouncer/interface
  • Visual indication of keyer speed
  • Optional ‚paddle only‘ sidetone
  • Display of transmitted CW characters
  • Integrated contest serial number
  • Supports PS72 keyboard or numeric keypad for memory recall
  • FSK & Digital
  • Low nois/high gain audio chain with independently controlled line amplifiers for unbeatable weak signal decoding
  • Automatic sound card line input select for digital modes
  • Transmitted data display (FSK RTTY only)
  • Other functions
  • Customizable, two line LC display with adjustable backlight
  • Separate power jack with power monitoring
  • Separate On/Off switch
  • CI-V output with simulated Icom ‚transceive data‘ when connected to a supported radio allows use of IC-PW1 with non-Icom transceivers
  • Proprietary serial port (ILink) simulates antenna/tuner control protocols (support for SteppIR, Ultrabeam, antenna tuner)
  • FH-1/FH-2 or equivalent keypad for memory control
  • Uses the same DB37 cable sets as microKEYER

Links for the microHAM device


Name is Erwin Witt, born 1962, working as technical service engineer in environmental test systems business. Ham radio hobby since 1980, main interests are VHF and EME operating.