Icom IC-7600 Instruction Manual - Page 45
RECEIVE AND TRANSMIT, ■ Functions for CW operation, ◇ About CW reverse mode - usb audio level
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4 RECEIVE AND TRANSMIT ■ Functions for CW operation D About CW reverse mode CW-R (CW Reverse) mode uses the opposite side band to receive CW signals. Use when interfering signals are near a desired signal and you want to use CW-R to reduce the interference. ➥ D uring CW mode, push [CW] to select CW and CW-R mode. D About CW pitch control The received CW audio pitch and CW sidetone can be adjusted to suit your preference (from 300 to 900 Hz; in 5 Hz steps). This does not change the operating frequency. ➥ Rotate [CW PITCH] to suit your preference. • Adjustable within 300 to 900 Hz. The filter set screen graphically displays the CW pitch operations. (See at right.) ➥ Push and hold [FILTER] for 1 sec. to access the filter set screen. • The CW pitch frequency is graphically changed in 5 Hz steps when the selected IF filter passband width is below 500Hz (" " appears), or in 25 Hz steps when the selected IF filter passband width is above 600Hz (" " disappears). • Push [EXIT/SET] or push and hold [FILTER] for 1 sec. to return to the previous screen. D CW sidetone function When the transceiver is in receive (and the break-in function is OFF- p. 85) you can listen to the CW sidetone without actually transmitting. This allows you to match your transmit frequency exactly to another station's by matching the audio tone. You can also use the CW sidetone (be sure to turn OFF break-in!) to practice CW sending. CW sidetone level can be adjusted in level set mode (p. 122). q P ush [SET] (F-6), then push [LEVEL] (F-1) to select level set mode. w P ush [Y] (F-1) or [Z] (F-2) to select "Side Tone Level" item. e Rotate the main dial to adjust the sidetone level. • Sidetone level is adjustable within 0 to 100 % in 1% steps. r Push [EXIT/SET] to exit display set mode. Matching the frequency of a transmitted and received signal is called "Zero beat." Push BFO Interference Desired signal CW mode (LSB side) BFO Interference Desired signal CW-R mode (USB side) Lower frequency • Filter set screen [CW PITCH] Higher frequency CW pitch frequency (e.g. 700 Hz) F-1 LEVEL / F-2 F-6 EXIT/SET SET Main dial 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 38