IC-7410 Setup

  1. 必要という訳ではありませんが、綺麗な状態から始めるという意味では、最初にオール・リセットをしておくのが良いかも知れません。
  2. Enter Set Mode
    • Menu 44: CI-V Transceive, OFF

Now, connect your IC-7410 and your PC with a USB cable, and let’s see if your rig is on-line.


Serial I/O


% ls -l /dev/ttyUSB*
crw-rw---- 1 root dialout 188, 0 Jan  1 16:49 /dev/ttyUSB0

You will see something like this. This is the serial port with which you can talk to (and listen to) your rig for the control.


USB Audio I/F (Playback)


 % aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: ALC889 Analog [ALC889 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 3: ALC889 Digital [ALC889 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: CODEC [USB Audio CODEC], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

This is to check the available sound output devices. In this case, card 2, device 0, or hw:2,0 in ALSA’s terminology, is the USB audio interface of IC-7410.

Since we are only interested in CW, this part of the function is of no use to us, but let’s see if this I/F really works.

  1. Enter Set Mode
    • Menu 40: DATA OFF MOD, USB
    • Menu 39: USB MOD Level, 15%
  2. Set the rig to SSB mode, set MONITOR on, connect to a dummy load, minimize the RF power, and set TRANSMIT on!
% aplay --dump-hw-params --device=hw:2,0 test_sound.wav 
Playing WAVE './test_sound.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
HW Params of device "hw:2,0":
--------------------
ACCESS:  MMAP_INTERLEAVED RW_INTERLEAVED
FORMAT:  S8 U8 S16_LE
SUBFORMAT:  STD
SAMPLE_BITS: [8 16]
FRAME_BITS: [8 32]
CHANNELS: [1 2]
RATE: [32000 48000]
PERIOD_TIME: [1000 16384000]
PERIOD_SIZE: [32 524288]
PERIOD_BYTES: [64 524288]
PERIODS: [2 1024]
BUFFER_TIME: (1333 32768000]
BUFFER_SIZE: [64 1048576]
BUFFER_BYTES: [64 1048576]
TICK_TIME: ALL
--------------------

You will hear the sound file you are playing from your rig.


USB Audio I/F (Capture)


% arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: ALC889 Analog [ALC889 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 2: ALC889 Alt Analog [ALC889 Alt Analog]
  Subdevices: 2/2
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
card 2: CODEC [USB Audio CODEC], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

This shows the devices for sound capture. Again, card 2, device 0, or hw:2,0 is your rig.

% arecord --dump-hw-params --device=hw:2,0 --format=S16_LE --rate=44100 --channels=2 --file-type wav ttt.wav
Recording WAVE 'ttt.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
HW Params of device "hw:2,0":
--------------------
ACCESS:  MMAP_INTERLEAVED RW_INTERLEAVED
FORMAT:  S8 S16_LE
SUBFORMAT:  STD
SAMPLE_BITS: [8 16]
FRAME_BITS: [8 32]
CHANNELS: [1 2]
RATE: [8000 48000]
PERIOD_TIME: [1000 65536000]
PERIOD_SIZE: [16 524288]
PERIOD_BYTES: [64 524288]
PERIODS: [2 1024]
BUFFER_TIME: (666 131072000]
BUFFER_SIZE: [32 1048576]
BUFFER_BYTES: [64 1048576]
TICK_TIME: ALL
--------------------