Icom IC-R8500 instruction manual Memory Channels Scan Problem Possible Cause Solution

Page 45

TROUBLESHOOTING 13

MEMORY CHANNELS

SCAN

PROBLEM

POSSIBLE CAUSE

SOLUTION

REF.

Memory channels in

• The bank limit function is activated and

• Push [BANK] to turn OFF the bank limit

p. 18

another bank cannot be

“BANK” is indicated.

function or use [BANK] or [BANK] to se-

 

selected.

 

lect the bank.

 

 

 

 

 

Memory channels in the

• Written memories condition is set as

• Change the setting to START.

p. 24

‘AUTO’ bank are

CL&START.

 

 

cleared.

 

 

 

 

 

 

 

Bank name is erased

• [CEs] is pushed on the final name

• Push [ENT] after setting the name.

p. 20

after setting.

character.

 

 

 

 

 

 

Memory name cannot

• A frequency has not yet been pro-

• Push [MW] for 1 sec. in advance.

p. 19

be written.

grammed into the memory channel.

 

 

 

• [MW] key is used for name programming.

• Push [ENT] after setting the name.

p. 20

 

• [SQUELCH] is open and [∞] is selected.

 

 

No scan will function.

• Turn [SQUELCH] CW until noise disap-

p. 14

 

 

pears.

 

 

 

 

 

Programmed scan and

• The same frequencies are programmed

• Reprogram different frequencies into

p. 27

auto memory write scan

into the selected scanning group.

scan edge channels or select a different

 

does not function.

 

programmed scan group.

 

 

 

 

 

Memory scan does not

• All channels are specified as “SKIP”

• Turn OFF the automatic skip function or

pgs.

function.

channels in the selected bank.

release the “SKIP” setting for 2 or more

25, 26

 

 

channels in the selected bank.

 

 

• No memory channels have yet been

• Program 2 or more channels in the se-

p. 19

 

programmed in the selected bank.

lected bank.

 

 

 

 

 

Select memory scan

• Two or more “SEL-CH” are not specified

• Set 2 or more channels as “SEL-CH” in

p. 23

does not function.

in the selected bank.

the selected bank.

 

 

 

 

 

Auto memory write

• All channels in the auto memory bank

• Erase some or all of the channels in the

p. 24

scan does not function.

have been programmed.

auto write bank.

 

 

 

 

 

Scan starts automati-

• The AFC function is activated and an

• Push [AFC] to turn the AFC function

p. 14

cally.

off-center signal is received in FM or

OFF or wait until the center frequency is

 

 

WFM mode.

selected.

 

 

 

 

 

42

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Contents IC-r8500 Explicit Definitions Accessories included with the IC-R8500 QtyTable of Contents Panel Description ➋ SLEEP/SET Switch SLEEP/SETFront panel ➎ Headphone Jack Phones5SPEECH/LOCK Switch SPCH/LOCK 7MAIN Dial@0S-METER @7SCAN Switches Scan Scan SET Auto p Skip pPrio p DLY D/S pRear panel 9RECEIVE Indicator 7ATTENUATOR IndicatorsFunction display MHz kHzConnections Mounting installationLocation Receiver standRequired connections TYPE-N Connector Installation Example Using a long wire antenna for HF bandsPL-259 Connector Installation Example Antenna connection GroundingTape recorder connections Connecting to a PCTransceive function Data demodulation terminalUsing the keypad Frequency SettingExample Setting the Frequency Using the Keypad Read me firstSelecting a tuning step Using the main dialSetting the programmable tuning step Setting the lock function coverageInitial settings Mode selectionReceive Functions Squelch function Center indicatorFunctions for FM Functions for SSB/CWNoise blanker BFO adjustmentAudio peak filter Dagc functionData communications For high speed data 9600 bps reception in FM modeConnections Receiving methodMemory Channels Bank Initial Contents UsageGeneral Bank selectionUsing the keypad Using the M-CH selectorChannel selection Bank limit functionProgramming Copy and paste memory editingClearing Channel/bank names Channel name programmingBank name programming Assigning channel numbers Deleting memory channelsTo rearrange bank channel assignments Adding/inserting memory channels ➂ Rotate M-CH to select the following➃ Push Bank for 1 sec. to perform the selected operation Operation ScansMemory scan Memory select scanDProgrammed scan Specifying skip channel and frequency Mode select functionPriority scan Specifying skip channelsAutomatic bank limit/skip functions Voice scan control functionTurning OFF the automatic function Programming scan edge frequencies Scan speed/delay functionsScan resume condition OFF DLY ∞Assigning a function to the DELAY/SPEED control Scan delayScan speed Operation Sleep TimerSelecting quick set mode SET ModeSelecting initial set mode Display Example Quick SET ModeQuick set mode items Initial set mode items Installed, you can select between English When the optional UT-102 Voice Synthesizer Unit isInstalled, you can select between faster or slower This item sets the data transfer rate. When AutoRS-232C socket Remote jack Connector InformationIf OUT jack AGC OUT jackREC Remote jack DC 13.8 V and DC in socketsREC OUT jack Phones jackCommand table Control CommandsData format Basic format from PC to IC-R8500‘OK’ message from IC-R8500 to PC Memory channel contents set & write 1A‘NG’ message from IC-R8500 to PC Special bank number and channels bnMaintenance ➂Replace the top cover Optional InstallationsCR-293HIGH Stability Crystal Unit TV-R7100 specifications OperationGeneral TV receiverTroubleshooting Memory Channels Scan Problem Possible Cause Solution Specifications GeneralReceiver AH-7000 OptionsFL-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.
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