Setting Audio Levels - microHAM microKEYER II User Manual

For optimum operation microKEYER II audio levels must be set properly. The function of each control was
described in the AUDIO MIXER and DVK sections of the manual. Following a step-by-step approach will
help you to set proper levels.
1. Connect the original microphone for your transceiver directly to the mic input of the transceiver.
2. Connect the transceiver to a dummy load and set it to USB or LSB.
3. Turn off any speech processor, key the radio, talk into the mic and while watching the ALC indication
rotate the transceiver Mic Gain so that the ALC peaks at the top of the ALC zone.
Do not adjust the Mic Gain again.
4. Disconnect the microphone from from your transceiver and attach the mic cable from MK II.
5. Open the cover of microKEYER II and check the position of the jumpers for the microphones.
6. Set the three trimmers (located just to the front of the RADIO
DB37) to the middle of their range.
7. Connect the radio mic to the RJ-45 connector and select the
"Rear" mic on the Audio Switching tab.
8. Key the transceiver, speak into the radio microphone and
adjust the MIC (center) trimmer so that the transceiver ALC peaks at the top of the ALC zone.
9. Disconnect the radio mic from the RJ-45 connector. Connect your headset or boom microphone to
the EXT MIC jack and select the "Front" mic on the Audio Switching tab.
10. Put the transceiver into transmit, speak into the microphone and adjust the EXT MIC (left) trimmer
so that the transceiver ALC peaks at the top of the ALC zone (same as step 9).
11. Select the Audio Mixer Tab in Router and set REC MIC sampling to 44100.
12. Click on the Rec/RX Mixer and select the Microphone
13. Speak into the microphone and adjust the Mic slider so that the VU-meter does not peak into the red
on voice peaks
14. Set the TX control on the front of microKEYER II to 12 o'clock.
15. Set the TX VOICE/DIGITAL Master slider to 80% and the Wave slider to 50%
16. Switch your transceiver to AFSK mode (PKT, DIG or DATA for Yaesu, LSB-D or USB-D for Icom,
RTTY or RTTY-R on K2 and USB or LSB for Kenwood or TenTec). Do not select RTTY or FSK -
these are not AFSK modes.
17. Select the Audio Switching tab. Set both FSK/DIGITAL and VOICE to "Line input (rear)"
18. Select the Audio Mixer tab and click the "Test Signal" button. Adjust the TX WAVE slider for normal
(rated) output on your transceiver .
19. Select the Audio Switching tab. Set both FSK/DIGITAL and VOICE to "Microphone jack."
20. Set your radio to USB or LSB and click the "Test Signal" button. Adjust the BALANCE (right)
trimmer so that the ALC reading on your transceiver sets at the top of the ALC zone (rated output).
21. This sets proper levels for and all modes. You may want to store these Router settings to the last
preset. Click Preset | Save as, choose position number 12, name it Default and store settings.
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6 – Setting Audio Levels
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