Icom IC-7760 Operating Manual page 24

C. Using CW Skimmer with HDSDR (For a narrow 24 kHz bandwidth)
D Operation: Checking the CW band in CW Skimmer while communicating in the SSB
mode
While communicating in the SSB mode, when a signal of the CW station you want to make a call to is decoded in
CW Skimmer, turn ON the Split function on the IC-7760 to make a call.
L You can also use the same band and the same operating mode Dualwatch.
1. Select the SSB mode and set the receive frequency (14.200 MHz) on the IC-7760 Main band.
L Communicate in the SSB mode until a target station appears.
2. Select the CW mode and set the transmit frequency (7.015 MHz) on the IC-7760 Sub band.
3. Turn ON the Dualwatch function on the IC-7760 and start HDSDR and CW Skimmer.
• The I/Q data is input from the IC-7760 Sub band to HDSDR.
4. If a CW station you want to make a call is displayed on CW Skimmer, click the displayed signal.
• The frequency is set to the IC-7760 Sub band.
• The IC-7760 Sub band operating frequency, the HDSDR LO frequency, the HDSDR Tune frequency, and the CW
Skimmer frequency are set to the same frequency.
5. Turn ON the Split function on the IC-7760 and transmit to the station on the IC-7760 Sub band.
IC-7760 (Controller)
MAIN (RX/TX)
14.200 MHz SSB
SUB (RX)
7.015 MHz CW
Dualwatch: ON
Split: ON*
* When communicating
in the CW mode
L Information
• You can not hear the demodulated audio from HDSDR because HDSDR in this case is used for only I/Q data conversion.
• You can hear the demodulated audio of the operating frequency from CW Skimmer which is the same audio as the IC-7760.
• The I/Q data output from HDSDR is input to CW Skimmer through VB-Audio Hi-Fi Cable.
• CW Skimmer uses Omni-Rig to connect to com0com and controls the HDSDR Tune frequency through the virtual serial port
of com0com.
PC
Speaker
RF deck
I/Q data (SUB)
Sync Mode: Only HDSDR sync
16
Select the USB mode on HDSDR.
I/Q data
output
VB-Audio
Hi-Fi Cable
CW Skimmer
7.015 MHz
Control
com0com
Omni-Rig