Icom IC-7610 Instruction Manual basic - Page 28
RF gain and SQL level, Meter display, Selecting the Meter readout, About the Multi-function meter - speaker
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3 BASIC OPERATION RF gain and SQL level Meter display Rotate AF RF/SQL (outer) to adjust the RF gain and SQL level. By default, rotating to the left (when set to the 12 o'clock position) adjusts the RF gain, and rotating to the right adjusts the squelch level, as described below. Squelch is open RF gain adjustable range is displayed Minimum RF gain Noise squelch (FM mode) Maximum RF gain S-meter squelch adjustable range Maximum S-meter squelch DDSelecting the Meter readout Select one of the 6 different transmit parameters (Po, SWR, ALC, COMP, Vd and Id) to display during transmit. Touch the meter to display one of the meters. The selected meter's icon is displayed. Signal strength RF gain You can adjust the receive sensitivity. ••If a strong interfering signal is received, rotate AF RF/SQL (outer) counterclockwise to reduce the RF gain. L"RFG" is displayed to indicate that the gain is reduced. LIf a strong signal is received and "OVF" (Overflow) appears, reduce the RF gain until "OVF" disappears. Squelch (SQL) level There are 2 types of squelch, depending on the operating mode. ••Noise squelch Rotate the AF RF/SQL (outer) until the noise just disappears and the TX/RX indicator goes OFF. ••S-meter squelch The S-meter squelch disables the audio output from the speaker or headphones when the received signal is weaker than the specified S-meter squelch level. Rotate the AF RF/SQL clockwise from the 12 o'clock position to increase the S-meter threshold level. L You can change the AF RF/SQL (outer) control type in "RF/SQL Control." (p. 8-3) MENU » SET > Function > RF/SQL Control Id Power level SWR Compression level ALC level Vd DDAbout the Multi-function meter S: Displays the receiving signal strength level. Po: Displays the relative RF output power. SWR: Displays the SWR of the antenna at the selected frequency. ALC: Displays the ALC level. When the meter movement shows the input signal level exceeds the allowed level, the ALC limits the RF power to suppress signal distortion. In such cases, decrease the microphone gain level. COMP: Displays the compression level when the speech compressor is used. Vd: Displays the drain voltage of the final amplifier MOS-FETs. Id: Displays the drain current of the final amplifier MOS-FETs. TEMP: Displays the temperature of the final amplifier MOS-FETs. 3-7