microHAM © 2008 All rights reserved
Digital (FSK/AFSK/PSK31):
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six transformers for DC isolation of sound card and radios
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selectable routing of radio outputs (VFO A/B) for each sound card channel
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low noise amplifiers for improved weak signal decoding
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front panel controls to optimize levels for each sound card channel
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front panel controls to optimize mic drive for each radio
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integrated high performance, low noise floor USB sound core (MK2R+ only)
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separate USB sound codec for digital modes (MK2R+ only)
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separate digital audio drive for each radio
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selectable sound card channel output/steering for digital audio
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application specific mono/stereo signal source handling
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dual FSK output
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supports data codes with 5/6/7/8 data bits and 1/1.5/2 stop bits
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unique, hot switch protected FSK keying
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separate PTT output for digital audio mode operation with microphone muting
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nine (9) user programmable memories (FSK)
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supports PS/2 keyboard FSK transmission with type ahead and diddle function
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supports PS/2 keyboard or keypad for FSK message playback and control
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PS/2 keyboard/keypad FSK works without computer connection
Voice (SSB/AM/FM):
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front panel headset jacks
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rear panel hand/desktop microphone jack
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front panel selection of connected microphones
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supports all microphone control functions for Radio1
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selectable preamplifier supports dynamic microphones with computer interface
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selectable preamplifier for using dynamic microphones with Icom radios
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customizable microphone routing for each state (VOX / computer PTT / foot switch) by radio
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customizable microphone routing for operation style (direct to radio / through sound card)
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Digital Voice Keyer with nine messages up to 120 seconds line and unlimited “banks”
Headphone (Receive) Audio:
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front panel headphones jacks, rear panel external speaker jack
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unique "multi-source" signal handling
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supports second sound card for audio review or “spot announcements”
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able to switch any of six (6) audio sources to either ear
1. R1 VFOA
2. R1 VFOB
3. R2 VFOA
4. R2 VFOB
5. Sound Card left channel
6. Sound Card right channel
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hardware support for independent receive audio selection by operating state
1. R1=RX, R2=RX, TX focus=R1
2. R1=RX, R2=RX, TX focus=R2
3. R1=TX, R2=RX
4. R1=RX, R2=TX
5. R1=TX, R2=TX
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hardware support for user defined "scenarios" handling (weak pileup, strong pileup, S&P, etc ...)
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front panel control of audio mix level
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configurable audio source (VFO A/B) for each sound card channel
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support for recording headphone audio (WYH - What You Hear)
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user selectable “delayed” headphone switching (100ms steps)
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independent front panel record level level control for each channel
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additional buttons for "classic" audio control R1/SPLIT/R2 or R1/MIX/R2
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easy switching between manual and automatic control
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