We use cookies to provide you the best experience on our websitet. More info: Data Protection Statement.
Products Menu


Click to enlarge
264.00 EUR (220.00 EUR + VAT)
Availability: On stock
Average Rating: Not Rated


Microham DIGI KEYER II is a powerful All-In-One USB interface for amateur radio digital mode operation including RTTY, PSK31, MFSK, Olivia, WSJT, ect. and CW.  DK II combines the proven performance of the original Digi Keyer, the enhanced control and interfacing capability of microKEYER II, K1EL WinKey CW keyer and microHAM's unique support for fldigi p-FSK/q-CW and cocoaModem's OOK modes. ​​An All-in-One digital mode USB interface with radio control, hardware FSK, K1EL WinKey and industry standard USB Sound.

The interface is suitable for connecting any type of transceiver that has a CAT port. For example, Yaesu, Kenwood, Icom, Elecraft, Ten-Tec.

Microham Digi Keyer II box contains: device, USB A / B cable, clip on ferrit rfi filter, power connector (the power cord must be made by you), installation cd, RCA / RCA cable

The device is compatible with a wide range of radios, so you need to create a radio-specific cable, it is not supplied in the box. If necessary, we can manufacture these cables and you can ask for our unique quotation! Cabling and device setup can be downloaded here: http://www.microham.com/contents/en-us/d137.html

You can check the Microham Digi Keyer II front panel layout and back panel connenctors by clicking here!

Cabling and device setup can be downloaded here: http://www.microham.com/contents/en-us/d137.html

Driver software and user manual can be downloaded here: http://www.microham.com/contents/en-us/d29_downloads.html

Microham DIGI KEYER II block diagram:

Microham DIGI KEYER II features:

No serial or parallel port required:
- just one USB cable between your computer and DIGI KEYER II
- Fully integrated: Sound Radio Control, true FSK, CW and PTT
- Computer sound card is not used 

Complete "Computer <-> Radio" electrical isolation
- transformer isolation between sound circuits and radio
- optical isolation between USB port and of ALL digital signals: Radio Control, CW, PTT, FSK, PA PTT, & LNA PTT 

Standard Sound Device - no custom drivers: 
- The microHAM CODEC is an industry standard device recognized by Windows, Apple OS 10 and LINUX. 

There are no custom device drivers to install and no compatibility problems with your favorite applications.
- Sound card connection for micro2R 

Ultra low noise: 
- The sound circuits are designed with special attention to low noise 
- The receive noise floor in DKII is lower than any value priced sound card or similar amateur product. 
- Dynamic range rivals that of professional products.
- Special circuit design maintains full dynamic range and low noise floor with all radios - both high level and low level outputs.  

Compatible with most standard Windows software 
- special microHAM USB Device Router creates as many virtual COM ports as needed to function fully with your favorite programs
- customizable presets allow instantly changing configuration when switching programs 

Supported by MacLoggerDX, RUMLog and RUMPed on macOS 
- supports cocoaModem and other Macintosh applications. 

Integrated control port for all radios: CI-V, FIF-232, IF-232, RS-232
- fully supports Elecraft, Icom, JRC, Kenwood, Ten-Tec, and Yaesu radios 

Dual Channel Receive:
- supports dual receive with transceivers like the Icom 7800, Yaesu FT-9000, FT-5000, FT-2000, 

FT-1000D/MP/Mark V, Kenwood TS-2000, and Elecraft K3. 
- independent, front panel level controls for each receiver 

Front Panel Level Adjustments: 
- Pots for Transmit level, Main Receiver level and Sub receiver level 
- no need to fumble with Windows Mixer to control levels 

Integrated K1EL WinKey™ chip with extended capabilities 
- front panel speed knob
- nine (9) user programmable memories
- internal paddle buffer for improved reliability. 
- PS/2 keyboard support for direct CW generation. 
- PS/2 keyboard/keypad support for instant CW message playback
- PS/2 keyboard/keypad CW work without a computer connection
- auto PTT
- selectable side tone
- all parameters are stored in EEPROM and reloaded on power up 

FSK keying output
- capable of sending 5/6/7/8 bits and 1/1.5/2 stop bits
- PS/2 keyboard support for direct FSK transmission without a computer
- PS/2 keyboard support for instant FSK message playback
- PS/2 keyboard works without a computer connection 

Sound card Right channel audio detector and FSK/CW driver   
- FSK output for FLDIGI "pseudo-FSK" and cocoaModem OOK mode  
- Provides a "hard keyed" CW output for software that generates only audio (sidetone) CW 

Independent keying buffers for Power Amplifier and LNA switching
- extended range solid state output for low voltage T/R lines or QSK
- relay isolated output for vintage PA with negative voltage T/R lines
- Bypass LNA before activating both PTT circuits for EME or scatter 

Footswitch input with programmable functions
- programmable PTT activation delay in 1ms steps
- selectable muting of CW and/or FSK when footswitch is closed 

Squelch input for signaling to computer
- two inputs, one is active low, second is active high 
- ideal for Echolink and remote interfacing applications 

No external power adapter (where the radio provides auxiliary power) 
- No noisy DC to DC converters
- USB and Sound chip are powered from the computer USB port
- Controller is powered from transceiver or transceiver power supply 

Strong immunity from RFI
- integrated chokes and filters for best RFI immunity
- advanced shielding and circuit design to suppress RFI generation 

Input/Output connectors
  Computer: USB,  Radio: DB15, Paddle: 6.3 mm, Sub RX: 3.5mm 
  Footswitch: RCA, PA PTT: RCA, LNA PTT: RCA, PTT IN: RCA,
  PS/2: MiniDIN6, u2R: 2x3.5mm

Metal/Aluminum case, powder coated and silk screened

Free firmware/software upgrades via internet 

Microham DIGI KEYER II specifications:


USB USB 1.1 and 2.0 compatible
Power consumption USB side - less than 100mA Transceiver side less than 200mA at 13.5V (max. 16V)
Radio Port RxD, TxD, max. 57,600 Baud - levels:TTL, inverted TTL, open collector bus, RS232
CI-V Port open collector bus, max. 9600 Baud
CW open collector, max 30V/400mA
FSK open collector, max 30V/400mA - supported 5/6/7/8bit data length, 1/1.5/2 stop bit, up to 300 Baud
PTT open collector, max 30V/100mA
PA PTT selectable by jumper - open collector, max. 48V/0.8A - relay contact, max. 48V AC/DC 1A
LNA PTT selectable by jumper - open collector, max. 48V/0.8A - relay contact, max. 48V AC/DC 1A1
Foot Switch active when closed to ground, max load:1 mA at 5V
PTT IN active when closed to ground, max load:1 mA at 5V
Audio Out - single channel (left) - output impedance:600 Ohm - output level:1.5V p-p (max) - AC coupled - 3dB bandwidth:0.2 - 3KHz typical - Sampling rates:32000, 44100, and 48000 Hz
Audio In - dual channel (stereo) - input impedance:50k Ohm - input level:4V p-p (max) - AC coupled - 3dB bandwidth:0.2 - 3KHz typical - sensitivity:60mV p-p for full scale ADC readout
Dimensions W 165mm x H 44mm x D 110mm
Weight 1100g (2.4 lbs.)


There are no reviews for this product.

Other products you may like

Introducing the new 5W Dual Band Digital Transceiver – Yaesu FT3DE!

The new Yaesu FT3DE provides reliable 5W RF power output in compact design and light weight from factor - W62mm x H100mm x D32.5mm/ 282g. Battery power-saving settings are available for each frequency band with TX output power level (5W/ 2.5W/ 1W/ 0.3W) individually selectable. Even in a compact body, the user can enjoy loud and clear C4FM voice quality from 700mW of audio power. Real Dual Band Operation (V+V, U+U, V+U, U+V) are available with two independent receivers, and the FT3DR/E supports simultaneous C4FM digital monitoring for both the A and B bands (C4FM/C4FM standby).

SDRplay is pleased to announce the release of SDRuno v1.3. SDRplay is pleased to announce the release of SDRuno v1.3. This is a major upgrade to SDRuno, which adds a number of important new features and is intended for all RSP models (RSP1, RSP1A, RSP2, RSP2pro and RSPduo)
PDN (Portable Digital Node) function for the FTM-400 and FTM-100 We are excited to inform that the PDN (Portable Digital Node) function for the FTM-400 and FTM-100 series is now available. This firmware is now available at Yaesu official website: http://www.yaesu.com
Raspberry Pi 3 + SDRe receivers It is clear that an excellent way to attract newcomers to the radio hobby is via the Raspberry Pi plus an RSP.  SDRplay has made available a downloadable SD Card image which is ideal for this. 
Introducing the new Yaesu FTDX-101 series!

We are pleased to announce more detailed information about the FTDX101 series HF+6m transceivers – the FTDX101MP for 200W output power and the FTDX101D with 100W output power. Both transceivers share the same core features utilizing the latest SDR Technology.