microHAM micro KEYER 2R Manual page 37

From transceiver headphone outputs to the operator headphones.
MK2R allows fully customized audio selection of both radio outputs (and
outputs from both receivers if radios with dual receivers are used).
Audio from the transceiver headphone jacks is connected to the MK2R
rear panel headphone input, (optionally) mixed with other audio sources
and switched to the operator headphones connected to the MK2R front
panel headphone jack.
Pressing and holding the + (B5) button in conjunction with LEFT EAR
(B4) or RIGHT EAR (B6) buttons allows selecting/mixing multiple
sources for each ear. The audio selection for each ear is indicated by
lights (2) and (3) at front panel.
The RADIO1 (B7), BOTH (B8) and RADIO2 (B9) buttons allow fast,
manual selection of Radio1, Both (Split/Mix), or Radio 2.
When the RADIO1 and RADIO2 buttons are pressed simultaneously, the AUTO light will illuminate and
MK2R will switch to the AUTO switching mode. The AUTO mode recognizes five (5) states:
RADIO1=RX & RADIO2=RX & RX focus=R1
–
RADIO1=RX & RADIO2=RX & RX focus=R2
–
RADIO1=TX & RADIO2=RX
–
RADIO1=RX & RADIO2=TX
–
RADIO1=TX & RADIO2=TX
–
Receive audio (headphone) switching can be programmed separately for each of these states. MK2R
stores up to eight sets of audio configuration Functions or "scenarios". Functions F1 through F4 are
saved/recalled by pressing F1 (B10) through F4 (B13). Functions F5 through F8 are accessed by holding
+ (B5) and pressing F1 through F4.
To enter into programming mode, MK2R must be placed into AUTO mode by pressing the RADIO1 (B7)
and RADIO2 (B9) buttons at the same time and then selecting + (B5) and BOTH (B8) simultaneously. The
AUTO light will flash while the MK2R is in programming mode. To exit Programming mode, press B5 and
B8 simultaneously.
From the sound cards to the transceivers including microphone switching.
Audio from the sound cards or codecs can be used for two purposes - it can be used as a digital Voice
Keyer (DVK) in voice modes (SSB, AM, FM) or for generating digital modes (AFSK/RTTY, PSK31, MFSK,
etc.). If both outputs of either sound card/codec are unused, that sound card can be routed to the
headphones by using the LEFT EAR and RIGHT EAR buttons described above.
MK2R recognizes four operating modes for each radio: CW, VOICE, DIGITAL and FSK. Each operating
mode has a separate configuration for routing audio among the microphone, sound card or codec input,
sound card or codec output and the transceiver inputs. The microphone can be switched to either the
sound card mic input or the microphone input of either transceiver. Output from the sound card can be
switched to the transceiver microphone jack (VOICE modes) or to the transceiver rear panel audio input
(FSK and DIGITAL modes).
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