Icom IC-R8500 instruction manual Data communications, Connections, Receiving method

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RECEIVE FUNCTIONS 4

■Data communications

DConnections

•For high speed data (9600 bps) reception in FM mode

Rear panel

[Audio IN] or [Detector IN]

to [AGC]

 

 

 

TU or TNC

 

 

 

RCA plug

 

Personal computer

• To use the [AGC] socket for AF output

Change the internal jumper plug as illustrated at right.

•The output is obtained for FM mode only.

•Usable for 9600 bps only.

•Refer to p. 37 for a description of opening the case.

AGC output (default)

AF direct detector output

200 mVrms/4.7 kΩ

• For regular speed data (1200 bps or lower) reception in any mode

 

AF IN

 

to [REC OUT]

2-conductor 3.5(d) plugs

TU or TNC

 

 

to [REC REMOTE]

Personal computer

 

SQUELCH IN

 

DReceiving method

➀Connect a terminal unit as above.

➁Select FM mode (or USB, CW modes for HF band data communications).

➂Set the receiver to the desired frequency as below.

➃Set the connected terminal unit to the appropriate settings.

•Refer to the terminal unit’s instructions.

Frequency settings depend on the mode used.

FM mode: [Setting frequency(displayed freq.)]=[Desired freq.]

USB mode: [Setting frequency(displayed freq.)]=[Desired freq.]–[Center of Mark and Space freq.]

CW narrow mode: [Setting frequency(displayed freq.)]=[Desired freq.]–[Center of Mark and Space freq.]+[600 Hz]

LSB mode (for amateur RTTY): [Setting frequency(displayed freq.)]=[Desired freq.] + [Mark freq.]

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Contents IC-r8500 Explicit Definitions Accessories included with the IC-R8500 QtyTable of Contents ➎ Headphone Jack Phones ➋ SLEEP/SET Switch SLEEP/SETPanel Description Front panel7MAIN Dial 5SPEECH/LOCK Switch SPCH/LOCK@0S-METER @7SCAN Switches Scan Scan SET DLY D/S p Skip pAuto p Prio pRear panel MHz kHz 7ATTENUATOR Indicators9RECEIVE Indicator Function displayReceiver stand Mounting installationConnections LocationRequired connections Antenna connection Grounding Using a long wire antenna for HF bandsTYPE-N Connector Installation Example PL-259 Connector Installation ExampleData demodulation terminal Connecting to a PCTape recorder connections Transceive functionRead me first Frequency SettingUsing the keypad Example Setting the Frequency Using the KeypadSetting the lock function coverage Using the main dialSelecting a tuning step Setting the programmable tuning stepMode selection Initial settingsReceive Functions Functions for SSB/CW Center indicatorSquelch function Functions for FMDagc function BFO adjustmentNoise blanker Audio peak filterReceiving method For high speed data 9600 bps reception in FM modeData communications ConnectionsBank selection Bank Initial Contents UsageMemory Channels GeneralBank limit function Using the M-CH selectorUsing the keypad Channel selectionCopy 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 Memory select scan ScansOperation Memory scanDProgrammed scan Specifying skip channels Mode select functionSpecifying skip channel and frequency Priority scanVoice scan control function Automatic bank limit/skip functionsTurning OFF the automatic function OFF DLY ∞ Scan speed/delay functionsProgramming scan edge frequencies Scan resume conditionScan delay Assigning a function to the DELAY/SPEED controlScan speed Operation Sleep TimerDisplay Example Quick SET Mode SET ModeSelecting quick set mode Selecting initial set modeQuick set mode items Initial set mode items This item sets the data transfer rate. When Auto When the optional UT-102 Voice Synthesizer Unit isInstalled, you can select between English Installed, you can select between faster or slowerAGC OUT jack Connector InformationRS-232C socket Remote jack If OUT jackPhones jack DC 13.8 V and DC in socketsREC Remote jack REC OUT jackBasic format from PC to IC-R8500 Control CommandsCommand table Data formatSpecial bank number and channels bn Memory channel contents set & write 1A‘OK’ message from IC-R8500 to PC ‘NG’ message from IC-R8500 to PCMaintenance ➂Replace the top cover Optional InstallationsCR-293HIGH Stability Crystal Unit TV receiver OperationTV-R7100 specifications GeneralTroubleshooting Memory Channels Scan Problem Possible Cause Solution General SpecificationsReceiver AD-55/A/V AC Adapter OptionsAH-7000 FL-52ACW Narrow Filter 455 kHz 500Hz/-6 dBCount 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.
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