sy ala 144MHz ALL-MODE TRANSCEIVER INCORPORATING A MICROCOMPUTER CPU contra with sitcom's original programs provide various operating capabilities. Nos backlash dial controlled: by ICON's epilogue rotary: encoder circuit The band-edge detector and Endless System provides outbalanced protection. There are no variable capacitors or dial gear, ensuring programmable Use. The IC:290AE can accommodate USB, LSB. CW overage in the 144 < 148 MHz {1G-290A 143.8 ~ 14B.2MHy) frequency range.
SECTION 111 INSTALLATION UNPACKING Carefully remove our transceiver from the packing carton and examine it for signs of shipping damage. Should there be any damage, notify the delivering carrier or dealer immediately, stating the full extent of the damage. It is recommended vou keep the shipping cartons. In the event storage, moving, or reshipment become necessary, they can come in handy. Accessory hardware, cables, etc., are packed with the transceiver.: Be sure you have not overlooked anything.
the mobile mounting bracket will provide you with some guidance as o placement Ay place Chars it can be mourned with metal screws, bolts, ior pops rivets will work:: For fixed attestation; g power supply should be designed to produce 3.6 amps for the transceiver. POWER REQUIREMENTS The transceiver is supplied ready to operate from anv regulated 13,8V DC. 3.6 ampere negative ground source. An automobile 12 volt, negative ground system is usually more than adequate for operation..
attempt to adjust an antenna for fewest VEER when using a diode SWERVE meter not engineered for VHE applications. Such readings will invariably hive an error of 40% or more. instead, Use an in:line:watt ‘meter: similar ‘to ‘the Drake WV Bird Model 43 or Sierra Model 1648 with VHF cartridge Further, when adjusting a mobile antenna ido so with the engine running preferably. above normal idling speed. [This will insure proper voltage level to the transceiver.
. kHz STEPS SWITCH Pushing the kHz STEPS Switch IN, and rotating the tuning knob will result in changing the frequency in 1 KHz steps in any mode. This button will allow you to quickly OSY overs great frequency range in SSB and CW and 1o tune in EM signals which are off from Stephens freestanding: . VOLUME CONTROL and: POWER SWITCH When the control is turned completely.
(NOISE BLANKER} SWITCH When: pulse: type noise such: as automobile ignition noise is audible: set this switch to the ON docked in} position.: The noise will be reduced to provide comfortable retention. {The Noise Blanker dogs nov activate in the Diadem: PRIORITY: SWITCH Turns the priority function ON and OFF.
24. S/RF INDICATOR Indicates S-unit and RF output feel with seven LED's in line. The numbers on the Meter represent 1 through 86 and 20 and 60dB over S9. The RE output level meter functions only as 2 relative output meter and does not indicate the wattage. These functions are switched automatically when T/R switching is made. REAR PANEL ANTENNA CONNECTOR ACCESSORY: SOCKET EXTERNAL: BEAKER JACK CRIKEY. JACK FOLLOWER ' SOCKET. 26, ANTENNA CONNECTOR This 1s used: to connect the antenna to the set.
UNDER THE TOP COVER SCAN [SPEED CONTROL: SCANS TOR T CONTROL TOSCANINI FUNCTION TUSCAN-STOP TIMER SWITCH . ) 3 Ne Ton TRANSISTOR FUNCTION SWITCH . SCAN: SPEED CONTROL Controls the scanning speed in any scan' mode. Stadium the control to desired scanning seed. I SCAN:STOP TIMER: SWITCH Switcher scan-stop interval function ON and OFF! . SCAN-STOP -TIME: CONTROL Controls: the:interval of the scan: autos stopping time: S Adulterous control 1o desired interval.
SECTION V OPERATION HOW TO TUNE The following instructions are for tuning in"any mode.. Please read carefully and understand fully before turning ON your unit: Proper tuning i necessary for optimum aeration. PRESET FREQUENCIES Whine the POWER Switch is turned QN; the frequency display will be 5.000. representing 145.000 MHz (C-290A 1 6,010, representing 146.
The ‘click stops of the knob change in:100Hz steps in the SSB or CW. dames; or KHZ steps if the £M mode (kHz when the 1K Hz Steps: Switch 1s pushed 1IN} The smaller verier marks on the knob represent g click: stop and the larger marks represent fen click stops. :One complete rotation of the tuning knob results: frequency increases: or decreases ot a KHz {Zedekiah in FM mode and 50K Hz wain the kHz Steps Switch is pushed INJ. When you each 145,999 MHZ in the SSB or CW modes, or 145:995MHz in FM mode {145.
FOR EXAMPLE: I 145/1250MH2 is set with “A" VFO, and the VFQ switch is set to “BY VFO. the frequency readout will show “BY VETS frequency. but 145,195 MHz is still stored in A’ CEO's memory. Returning the VFO Switch to "A” VFO position, and 5.125.0 will be displayed:on the readout. Accordingly, if the switch is placed in the *B” MFO position, the frequency that was set with the B VEQ will appear. This allows you to set a certain frequency with one VED.
2. When the OFFSET Switch s in the "DUPE? position. the set is in DUPLEX mode. and the transmit frequency s set Bookish {or reset offset frequency ¥ above e receive frequency. At the same time, the DUPLEX INDICATOR is lit. 3. When the OFFSET Switchback the "DUPE” position: the set:is in: DUPLEX mode; and the transmit frequency is set: 600K Hz (o reset offset frequency ] below the receive frequency, and the DUPLEX INDICATOR s lit. 4.
W What 10 do if you want 10 operate repeaters that have a frequency difference other than A600KHz {for example & 1Mz} FOR EXAMPLE: Set the MODE Switch in the “OFFSET WRITE" position, and the FREQUENCY DISPLAY shows 0BT Turn the tuning control knob luckiness 1o be shown 21,07 bn the the MEMORY WRITE button. Set: the MODE : Switch 1-the: “EM” position, and set “A” VFO 10 145.725MHz. ' Teri sot the OFFSET Switch to the "DUPONT position.
SCANNING OPERATION The IG280A/E provides: various: scanning: operations: Please read : the following instructions carefully to fully enjoy the IC-290AJE 's many capabilities, MEMORY SCAN This is to Sean the five Memory. Channels and two V EO s frequencies.continuoushy. 1. Program five desired frequencies in Memory Channelize ~ 5. 2. Push the MEMORY Switch to the memory position. (The MEMORY CHANNEL Switch may beset in any position.}) 3.
Motorizing Fornication iiokog Tunic Saver Sewn tartaric Seasonality Biography Lome VEO FULL RANGE SCAN This s to scan the entice band between 144.000MHz and 145.909MHz. [IC 2904 | between 143.800MHz arid 148.199MHz ) 1o Set the MEMORY Switch to MEO (out) position, and the SCANSION FUNCTION Switch located under the top cover to "FULL SCANT position. Depressing the $/S button starts the scan: from the VEO frequency to the low edge.
By setting the SCAN-STOP TIMER Switch in ON position and the SCAN-STOP UNCTION Switch in: BUSY position;: the Sean will stop and will restart afar spice died dime ik passed, whether ‘2 signal ‘has ‘been received or not, | This scan stopping time is adjustable between 5 secants and 20 seconds with the SCAN-STOP TIME CONTROL located under the top cover.
NOTE: ‘The auto stop circuit functions with S5B ‘or €W signals; but the scan does not always stop: at the: exact carrier frequencies: \While the scan stops operating on:one of these signals; tune iin 1o the signals for better reception by rotating the Tuning Control and by setting the MODE Switch to the proper mode. PRIORITY FUNCTION This function provides to check your favorite channel, such as a focal repeater or a calling channel, written: into a: memory channel while ‘operating Sonia VEO frequency.
SSB OPERATION 1 RECEIVING Alter connecting an antenna, microphone, etc, set books and switches as follows.
8. AGC {AUTOMATIC GAIN CONTROL) The [G-290A/E has a fast attack/slow release AGC system which holds the peak: voltage of rectified 1E signals: from the: IF microcircuit fora certain period i Therefor, during the paves i normal speech of ‘the received signal, uncomfortable noise willing: be heard.’ The meter indices the peak vale for a certain period, facilitating reading of the meter 7SY function.
shearer. The loudness of this tone is adjusted by rotating the €W MON] Control, located on the main unit inside cover. Rotating the CW MINI Control clockwise makes the tons toured: FM OPERATION 1 2 RECEIVING For EM reception; set the: MODE Switch to the EM position.
I you need a tone-burst for initial access of the repeater, depress the Tone Call Switch for the required period. (Tone-burst periods vary individually.
SECTION VI CIRCUIT DESCRIPTION e OUTLINE The 1C:290A7E employs a digital phase locked too (PLL) circuit as the local oscillator for both transmit and receive; The output 'of the PLL circuit is approximately: 10.75MHz below theremins frequency, thereby spurious is kept to a minimum. The operating frequency is controlled by pulse signals; generated: by the rotary encoder located at the tuning knob, being added to or subtracted from the preset frequencies in the microcomputer.
Signals: amplified by Q12 are fed through -L12 to the FM circuity: the \EM mode; and to 'the high-selectivity ‘stage monolithic crystal filter: FI1 through: L10:and D26 in the [SSB and CW motes, I the Demimonde the st 1R signals are fed 1o 1C12. 1C12 s composed of Znd focal oscillator 2nd mixer, limiter amplifier, quadrature detector and active filter circuits. The 2nd focal oscillator oscillates 10.205MHz, and is fed fo the 2nd mixer with the 15t 1F signals to convert 455K Hz 2nd IF signals.
SQUELCH CIRCUIT This circuits provided 1o s Hence the set until a signal is received. initiate FM mode, nose components put out from Pin 9 of 1C12 are fed to the AF attenuation. & half of 1011, which controls the squelch threshold feel. The output oF ICT s fed 1o 1C12 again, fitter ad about kHz signal {noise); and put out from: Pin 11, This signal (nails) is rectified by D46 and D47 integrated by R197; R1984nd €169, and chins 030 ON.
MAIN UNIT o i 8 Concurrence Pis R airy At TRANSMITTER CIRCUITS ANTENNA SWITCHING CIRCUIT i the transmit mode, DY and D2 are turned ON. D1 feeds the transmitting signals to antenna through the low-pass filter, and: 02 grounds: the:input terminal of the receiver, thus the transmit: hying signals are prevented from flowing into the receiver circuits.
[C3 and putout a carrier signal [The carrier level can be adjustable With R6T. TRANSMIT IF: AMPLIFIER CIRCUIT. DDS signals which: appear gt Pin: 2ot 1€} are fed to the base of (110 “and amplified by 010 and then fed to Ell through the switching diode D22, DSB signals are converted to: SSB signals by the filter and sent tithe buffer: amplifier 04 through D25 and D5 then the transmit mixer in the Rerunning. 1 the CW: mode, during key.
turn Q25 OF . and the set is turned in the receive mods: CW.MONITOR CIRCUIT Phase oscillator: Q27 oscillates at approximately 800Hz. The positive line of the key jack is connected to the base of 026 through R123. When the key is up, 026 is ON and grounds the phase shift network to stop oscillation.. When ‘the positive line is grounded by keying, the base of Q26 is grounded and turned OFF; and the phase shift network works rationally and 027 oscillates CW side-tone.
PLL UNIT Sl Si ins vad Gy L 1 Pessimism Lot Viscosity D5E MIXER, LOW PASS ‘FILTER, AND: AMPLIFIER CIRCUIT The output signals: from ‘the local oscillator: circuit and the VGO signals are mixed by the MOS EET: mixer 05, The output signals are fed to the cowpats filters to filter out only the signals below MHz. The ‘output signals from the filter are amplified ‘1o the proper drive teal (mote than VP-p) of the programmable divider 1C1 by 04.
PLL output freq. = octal oscillator freq. (MHZ) + 0.0 TM (the reference freq.) x N {divide: number:of programmable divider) When the last two digits of the display frequency are changed from:0 to 9.9K Hz, the local oscillator frequency is changed from 128.180 10 128 1899MHz. When the display. frequency reaches 10.
multi vibrator, consisting of 1G3, starts oscillation for scanning, and the decimal points of the frequency display will blink:: Whn Pin dowered, Pin 8 {UP/DOWN control terminal) is also dowered, but its voltage 1s still the downward scanning is selected. The oscillation frequency {scan speed] can be adjusted by R25. When a-VETO is selected (i the programmed scan or full range scan function). the voltage at & is ground level, and Otis turned OFF.
and are: fed to:A and Input terminals through the ma trig( circuit. The Rereads the relationship of Output, and A and B input signals to decide the function as follows: {Clock) This: flow occurs: when: the: frequency: 1§ moved ‘up or: down: with: each pulse input by fuming the tuning control knob o scanning: 00~ A1 (Up/Down) This:flow: occurs when the: frequency: improved up:: When the frequency s moved down the OO signal s not fed {L8B) This Low scours when 'the MODE Switch is:set at "BALLS.
o memory channel set by ‘the Sensory Channel Switch. This function is prior 1o the function (100Hz Steps) This flow occurs:when the MODE Switch is set ar “USB", “BALLS" or "CW?; and the operating frequency is moved up or down with 100Hz steps by wining the tuning control knob or swanning. 04 > A2 (kHz Steps) ‘This flow occurs when:the :MODE Switch is set:at: “EM", -and: the: operating frequency i moved up or doer with: 5K Hz steps: 04 > A3 (kHz Taps) When this: flow occurs, the operating frequent.
06+ A1 (MHz Up) When this flow occurs, the 1MH2 digit of operating frequency is moved up with MHz spats. {This mode is not used for 1C-290A/E {Programmed | Scan) When this: flow occurs; and the $/5 button: s depressed, the operating frequency: scans bet: ween frequencies written into the Memory Channels 1 and 2.
When: the power is turned ON; the:CPU s initialized and: then reads the mode setting and memo sizer it Then the CPU reads: the ‘control data ‘from the external ‘controller in the order of the numbers of the matrix and controls the various necessary operations.
CATION VIII TROUBLE-SHOOTING Your 1C-290AJE has been tested very carefully at the factory: before shipping: “The chart below has been designed 1o help you correct any problems which are not equipment malfunctions. If you are not able to locates the problem and/or solve it through use of cathartic, please compact you deteriorate ICON distributor for assistance. muted. Power cord is connected with the polarity: reversed: Blown fuse, Problem Possible Cause Solution 1.
Problem Possible Case Solution B :No.or fow RF output: RE Power Switch is set at the Prepositional: PTT Switch is not functioning due 1o bad connection of the MIC connector: The antenna feeder is cut ot shorted. When SSB or FM i3 desired, but the MODE Switch is in the CW position. Set the: RE. Power Switch 'to the High (normal}position: Chick the: connection: of the MIC connector and correct any problems Check: the antenna feeder and correct any problems; Set the.
Problem Possible Cause $Solution: 9. The memory. stein operation does not function when the §/5 Switch Is pushed. Frequency is programmed tithe memory channelization The @ same frequency is pro rammed in all the memory channels: The MEMORY Switch i$: nat i the Memory: Channel position; Program the required frequencies in the ‘memory channels Hollow: withering: instructions for “Memo RY CHANNEL OPERATION” peonage 16 Set the: MEMORY Switch in the Memory:Channel position.
SECTION X OPTIONS We have prepared a variety of options for the transceiver 1C200/E in order to enlarge [souse: 1C-3PE BC-10A AC POWER SUPPLY MEMORY BACKUP 138V 3A AC POWER SUPPLY.
