Icom IC-R8500 instruction manual Panel Description, Front panel, ➋ SLEEP/SET Switch SLEEP/SET

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1 PANEL DESCRIPTION

Front panel

qPOWER

SLEEP/ SET

w

REC

REMOTE

e

REC OUT

r

PHONES

t

yu

@0

S

1 3 5 7 9 +20dB+60dB

FM

 

 

 

 

 

SLEEP

 

 

 

SIGNAL

LOCK

 

 

 

 

 

 

 

 

 

NB AFC AGC-F APF-N

BANK

I

 

iC-r8500

RECV 10-ATT-20

ICOM

COMMUNICATION RECEIVER

 

 

 

 

 

MODE

 

 

 

WFM

FM

AM

SSB/CW

TS

 

NB/AFC

AGC

10dB

20dB

TS

 

AF GAIN

 

SQUELCH

APF IF SHIFT

SPCH

 

 

 

 

 

 

 

 

 

 

LOCK

 

 

 

 

 

APF

 

i o !0 !1 !2 !3 !4

POWER SWITCH [POWER] Turns power ON and OFF.

SLEEP/SET SWITCH [SLEEP/SET]

Push momentarily to set the sleep timer (p. 29).

Selectable times are 30, 60, 90, 120 min. or OFF.

SLEEP ” appears in the function display when the sleep timer is set.

Push for 1 sec. to enter quick set mode (p. 30).

Use the [M-CH] selector and main dial to select items and contents, respectively.

RECORDER REMOTE JACK [REC REMOTE] (p. 10) Controls the running of a tape recorder for record- ing. Connects to the REMOTE jack on a tape recorder.

RECORDER JACK [REC OUT] (p. 10)

Outputs an audio signal. Connect to the AUX or LINE IN jack on a tape recorder.

HEADPHONE JACK [PHONES]

Accepts headphones with 4–16 Ω impedance.

When headphones are connected, no receive audio comes from the speaker.

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

MODE SWITCHES [WFM]/[FM]/[AM]/[SSB/CW] (p. 13)

Push to select an operating mode.

The following keys toggle between several modes: [FM] ................. FM, FM narrow

[AM] ................. AM, AM narrow, AM wide [SSB/CW] ........ USB, LSB, CW, optional CW narrow

When SSB/CW mode is selected, push [SSB/CW] for 1 sec. to adjust the BFO frequency. (p. 15).

NOISE BLANKER/AFC SWITCH [NB]/[AFC] Activates the noise blanker function or automatic fre- quency control function.

The noise blanker is used for removing pulse-type noise when SSB, CW or AM mode is selected (p. 15).

The automatic frequency control tunes the displayed fre- quency automatically when an off-center frequency is re- ceived. It activates when FM or WFM is selected (p. 14).

AUDIO FREQUENCY GAIN CONTROL [AF GAIN] (p. 13)

Rotate clockwise to increase the audio output; rotate counterclockwise to decrease the audio output.

AUTOMATIC GAIN CONTROL [AGC] (p. 15) Toggles the time constant of the AGC circuit be- tween “slow” and “fast.”

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

Cannot be used in FM or WFM modes.

SQUELCH CONTROL [SQUELCH] (p. 14)

Varies the squelch threshold level (to mute noise when receiving no signal).

 

 

 

 

S-meter squelch

 

 

 

 

 

 

 

 

threshold

Noise squelch

 

 

• Signals below the

 

 

S-meter level

threshold (not

 

 

 

 

 

 

are muted.

available in SSB,

 

 

 

 

 

 

 

CW, WFM and

 

 

 

AM narrow modes)

 

 

 

!1IF SHIFT CONTROL [IF SHIFT] (p. 14)

Shifts the center frequency of the receiver’s IF pass- band to reject interfering signals.

• Cannot be used in FM, WFM and AM modes.

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Contents IC-r8500 Accessories included with the IC-R8500 Qty Explicit DefinitionsTable of Contents ➋ SLEEP/SET Switch SLEEP/SET Panel DescriptionFront panel ➎ Headphone Jack Phones7MAIN Dial 5SPEECH/LOCK Switch SPCH/LOCK@0S-METER @7SCAN Switches Scan Scan SET Skip p Auto pPrio p DLY D/S pRear panel 7ATTENUATOR Indicators 9RECEIVE IndicatorFunction display MHz kHzMounting installation ConnectionsLocation Receiver standRequired connections Using a long wire antenna for HF bands TYPE-N Connector Installation ExamplePL-259 Connector Installation Example Antenna connection GroundingConnecting to a PC Tape recorder connectionsTransceive function Data demodulation terminalFrequency Setting Using the keypadExample Setting the Frequency Using the Keypad Read me firstUsing the main dial Selecting a tuning stepSetting the programmable tuning step Setting the lock function coverageMode selection Initial settingsReceive Functions Center indicator Squelch functionFunctions for FM Functions for SSB/CWBFO adjustment Noise blankerAudio peak filter Dagc functionFor high speed data 9600 bps reception in FM mode Data communicationsConnections Receiving methodBank Initial Contents Usage Memory ChannelsGeneral Bank selectionUsing the M-CH selector Using the keypadChannel selection Bank limit functionCopy and paste memory editing ProgrammingClearing Channel name programming Channel/bank namesBank name programming Deleting memory channels Assigning channel numbersTo rearrange bank channel assignments ➂ Rotate M-CH to select the following Adding/inserting memory channels➃ Push Bank for 1 sec. to perform the selected operation Scans OperationMemory scan Memory select scanDProgrammed scan Mode select function Specifying skip channel and frequencyPriority scan Specifying skip channelsVoice scan control function Automatic bank limit/skip functionsTurning OFF the automatic function Scan speed/delay functions Programming scan edge frequenciesScan resume condition OFF DLY ∞Scan delay Assigning a function to the DELAY/SPEED controlScan speed Sleep Timer OperationSET Mode Selecting quick set modeSelecting initial set mode Display Example Quick SET ModeQuick set mode items Initial set mode items When the optional UT-102 Voice Synthesizer Unit is Installed, you can select between EnglishInstalled, you can select between faster or slower This item sets the data transfer rate. When AutoConnector Information RS-232C socket Remote jackIf OUT jack AGC OUT jackDC 13.8 V and DC in sockets REC Remote jackREC OUT jack Phones jackControl Commands Command tableData format Basic format from PC to IC-R8500Memory channel contents set & write 1A ‘OK’ message from IC-R8500 to PC‘NG’ message from IC-R8500 to PC Special bank number and channels bnMaintenance Optional Installations ➂Replace the top coverCR-293HIGH Stability Crystal Unit Operation TV-R7100 specificationsGeneral TV receiverTroubleshooting Memory Channels Scan Problem Possible Cause Solution General SpecificationsReceiver Options AH-7000FL-52ACW Narrow Filter 455 kHz 500Hz/-6 dB AD-55/A/V AC AdapterCount on us

IC-R8500 specifications

The Icom IC-R8500 is a highly regarded general-purpose receiver that has made its mark among amateur radio enthusiasts and professionals alike. This versatile communication receiver is known for its wide frequency coverage, advanced features, and robust design, making it a valuable tool for various applications, including shortwave listening, public safety communication, and aircraft monitoring.

One of the standout features of the IC-R8500 is its extensive frequency coverage. It spans a range from 0.1 MHz to 3 GHz, allowing users to access a wide spectrum of signals. The receiver includes coverage of HF, VHF, UHF, and even microwave bands, making it suitable for listening to everything from amateur radio transmissions to satellite communications.

The receiver employs a high-performance double-conversion superheterodyne architecture, which contributes to its excellent sensitivity and selectivity. The advanced RF circuitry minimizes interference and enhances the clarity of received signals. Users can expect outstanding audio quality and a wide dynamic range, even in challenging reception conditions.

Digital Signal Processing (DSP) is another key technology incorporated into the IC-R8500. The DSP capabilities allow users to apply noise reduction and filtering techniques to improve the quality of the received audio. Features such as automatic notch filtering and IF filtering help eliminate unwanted noise, enhancing the listening experience.

The IC-R8500 is equipped with a large, easy-to-read LCD display that provides information on frequency, mode, signal strength, and other essential parameters. The user-friendly interface simplifies operation, allowing quick access to various settings and functions. Additionally, the receiver supports various modulation modes, including AM, FM, SSB, and CW, catering to different listening preferences.

For those seeking enhanced connectivity, the IC-R8500 offers multiple options, including an audio output jack, and external speaker connections. It also has a built-in memory function, allowing users to store and recall favorite frequencies easily. The receiver can be controlled via a computer interface, offering versatility for advanced users and programmers.

In summary, the Icom IC-R8500 stands out for its wide frequency range, superior sensitivity, and advanced features powered by DSP technology. Its robust construction and user-friendly design make it a favorite among communications enthusiasts seeking a reliable and versatile receiver for various applications. Whether for hobbyist listening or professional use, the IC-R8500 remains a top choice in the world of radio receivers.