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‘Narrow’ is available for SSB, CW and AM only.The following information comes directly from the Icom Canada Service department.

to toggle the ﬁlter setting between normal and narrow. When the audio peak ﬁlter circuit is ON, push for 1 sec.

Use the control to adjust the center of the audio peak passband.

Push momentarily to toggle the audio peak ﬁlter circuit ON and OFF.

10 dB and 30 dB attenuator cannot be used below 500 kHz.

Clockwise rotation adjusts the ﬁlter setting higher counterclockwise rotation adjusts the ﬁlter setting lower.

15) Adjusts the audio peak ﬁlter setting to pick up a desired audio frequency.

Cannot be used in FM, WFM and AM modes.

Shifts the center frequency of the receiver’s IF passband to reject interfering signals. Varies the squelch threshold level (to mute noise when receiving no signal).

When “fast” is selected, “AGC-F” appears.

15) Toggles the time constant of the AGC circuit between “slow” and “fast.” Rotate clockwise to increase the audio output rotate counterclockwise to decrease the audio output. It activates when FM or WFM is selected (p.

The automatic frequency control tunes the displayed frequency automatically when an off-center frequency is received.

The noise blanker is used for removing pulse-type noise when SSB, CW or AM mode is selected (p.

15).Īctivates the noise blanker function or automatic frequency control function. When SSB/CW mode is selected, push for 1 sec.

The following keys toggle between several modes.

Stereo headphones can be connected, however, output is monaural.

When headphones are connected, no receive audio comes from the speaker.Connect to the AUX or LINE IN jack on a tape recorder.Īccepts headphones with 4–16 Ω impedance. Connects to the REMOTE jack on a tape recorder. 10) Controls the running of a tape recorder for recording. Use the selector and main dial to select items and contents, respectively.Į RECORDER REMOTE JACK (p.“ ” appears in the function display when the sleep timer is set.Push momentarily to set the sleep timer (p.

User manual icom receiver ic r8500