IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL This instruction manta contains important safety and pore: sting: constructions for the 1-737. PRECAUTIONS NEVER: apply ‘AG ot more than 116V DG 1o the: {DETAINEE] socket on the transceiver rear panel “This could cause a fire 0r fin the transceiver. NEVER allow children o torch the transceiver.
TABLE OF CONTENTS PRECAUTIONS L0 L genii 1. PANEL DESCRIPTION . IMPORTANT. (il i EXPLICIT DEFINITIONS ..ot Lk UNPACKING TABLE OF CONTENTS ..iiuiiinnnan i W Pantheons! i3 & Rear pang iR T W Function display g W Microphone (HM:36) Lg INSTALLATION AND CONNECTIONS :.71 18 W Unpacking iii M Mounting the transceiver . W Antenna i & Connections char W Power Supply connections 1. X W Linear amplifier connections: Giannini MW External antenna selector or antenna: finer. connections ..
© SQUELCH CONTROL [SQL(oxiter control) (p, 258) Adjusts:the squelch threshold level: Recommendation level for £\ Arrears Shallow ( \DB Commendation level forgo, Candid AM. FUNCTION The 'squelch raves noise output from’ the' speaker {closed condition) when no: signal s ‘received. The sauciness particularly effective for FM: & iris also valiant: ble for other:modes: PANEL DESCRIPTION 1 © MIC GAIN CONTROL control) (p. 25) Adjusts microphone input gain: Ha commended level tor ths supplied. .
1 PANEL DESCRIPTION See PEs. 1E2 o 06 900 @ RF POWER CONTROL [RF.PWR] (p. 25} Counterrevolutionaries the RE output powerfromminimum to: maximum. A PR Decreases { \ In greases: Min RF cutout Max. AR output > Maximum: Mk B output | Min AE output. 588 100 TOW 10:W: FM TOW 10w AM A40:W 10 @ SPEECH COMPRESSION LEVEL CONTROL [COMP LEVEL] (p.. 25} Adjusts the compression level. * This tricolor is available only when the: speech compress: sores ON. Recommended level LIMP.
@ UP/DOWN TUNING SWITCHES {p: 22 Changes the displayed: frequency up of dhow in programmed steps {1 KHz =7 MHz): @KEYPAD (pos. 21, 22 = Pushing a key selects the operating band. #|GENE] shellacs the general coverage hand. + Pushing. the same key twice calls up another stacking frequency in the band. *loom's DBMS (Double Band Stacking Register) memo: sizer 2 frequencies in sate band. (p:i21y = After pushing [FREQ-NIP] enters your desired frequency. Pushing [ENT] is necessary at the end. {eig. 1o enter 14.
1 PANEL DESCRIPTION Bes pitiable 8500 plasmon ok @ RIT SWITCH [RIT] (b 29) Turns the RIT function ON and OFF: @D s Indicated 'when the Tuition is ON: #{se the [RITALIN] control to vary the RIT frequency. +The RIT function can be turned ON even wham the ATX function s ON: »The max. RIT range can be expanded from £ 1.25 kHz 0. %25 kHE in the SET made. (.31} FUNCTION The RIT (Receiver Incremental:Tuning) shifts the receive. frequency Upton 125 kHz kHz)n 10 Hz steps: without shifting the: transmit frequency.
@ NOTCH SWITCH [NOTCH] (p. 30) Turnstile note function: ON and OFF. * The red indicator for the note High wain The function ONLINE * Use the notch control 16 vary the filtering frequency.: NOTCH MOTOR off [0 on NOTCH Seton FUNCTION The nonfunctional eliminates unwanted CW or AM cairn: O tones while ‘preserving the desired signal's audit response.” The filtering frequency must be adjusted toed: festively eliminate an'unwanted tone The Datatype noel i adopted i the 1-737: B PASS BAND TUNING CONTROL [PBT] (p.
1 PANEL DESCRIPTION M Rear panel @ GROUND TERMINAL (p. 11) Connect this terminal to a ground to prevent electrical shocks, TV BCH ang other problems: @ EXTERNAL SPEAKER JACK [EXT Accept 4216 ) speaker. @ ELECTRONIC KEYED SWITCH [KELLEY] Euros the internal election keyed ON and OFF B o Whine not using the internal ‘Wuhan using the internal keyed. lever. For straight kay.
1 PANEL DESCRIPTION W Function display P @ ? (EXT) LSBUSBCW-NAMFM=T | Valium( MOO | (BARK) @ -TUNE = W arx 5RO CEECT1—@ 9500, 1 539, TUNING INDICATOR Shows that the antenna tuner is: ON. 4 Appears when he antennae tuner is ON: = Blinks: when the ‘antenna is being tuned. @ THROUGH INDICATOR Shows that the ‘antenna tuner is bypassed. « Appears when the: antenna tuners manually bypassed or when the tuner Cannot mach the connected antenna; @ DIAL LOCK INDICATOR Shows that the dial lock function is activated.
2 INSTALLATION AND CONNECTIONS M Power supply connections Use -an: optional |1C-PS18, [IC-PS30 or PSB85 DO POWER SUPPLY:when operating the 1-737 with AC purger: Refer to tha diagram: below. CAUTION: ' Before connecting the DG power cable. check the following important Rems. Make sire! *The [POWER] switches OFF. *Lilliput voltage of the power rouses Is 124015V hen YOU USE & Non-eon ‘power.
INSTALLATION AND CONNECTIONS 2 B ASK terminal unit connections The 1-737 does not have F8K mode for RATTY; Am Refer to pas. 8 and 10 for ACTING) socket information TOR; PACKET, tee, however, you can operate these and microphone connector information. using ASK in ‘858 or EM mode. Interrogating ASK, externalization equipment to: the ACCRA) socket on: thereat panel or to the micro: phone connector on the front panel as'in the diagram below USING THE ACTING) SOCKET (Rear panel view) AFC mouton input .
17 3 B When first applying power Before first:applying power, make sure all connections required for your system are complete by referring to suction: 2. Then: reset the transceiver: using the ol lowing procedure. BASIC OPERATION NOTE: Resetting CLEARS all programmed contents in memory channels and returns programmed values: in the set mode o default values, (y Make sure the transceiver power is OFF. (2 While pushing [CLEAR] push iN [PowerPoint turn power ON: *The internal CPU i teasel.
B Basic operation *Phone (SSB, AM or FM) operation (> Make: sure the initial Settings are complete. s £ 6 Sr Icy SO £ gee ) 100 (2 Rotate the main dial to set the desired frequency. »See pga. 21 22 -for frequency smelting details. seers sue O O S EEE Q00 W ese 00 31 Select the desired operating mode with [SB, [AM] or {SEMITONE: @) Push [TUNE] to une the antenna; = TUNE appears when: tuning is.complete. il 1 appears after 20'se; ot emptiness tuning, if the! tunercannotiunethe connoted antenna.
3 BASIC OPERATION B VFO description VFQ is an abbreviation of Variable Frequency Oscillate: o, did traditionally refers to ‘an oscillator. Tha iG737"s Veins somewhat different. The VEO of the IX-757 acts fiche & computer's window and can show one frequency and one operating mode. You cantaloupe a desired frequency VFQ with the: Keypad, memo pad-read: switch (see: p. 27} or the memory: ranter switch {see p.
BASIC OPERATION 3 » The differences between the VFO mode and the memory mode VFO MODE Each VEO shows a frequency and operating mode. 1 the frequency or operating mode is changed, the VFO automatically memorizes the new frequency or new operating mode; When: the VRO is selected from another VEO or the memory mode; the last used frequency and opera: ing mode for-that VEO appear. MEMORY MODE {pgs. 37 ~42) Each memory channel shows a frequency and opera sting ‘mode ke a' VEO.
3 BASIC OPERATION M Frequency sett mg with the main dial +For ham band use (1YPuUsSh [MOVEMENT} to select the VFQ made if the memory:mode has been selected: «Then, push [A/B] 16 select the desired VEO, VFQ K or MOB. "Voila" or VRO 87 dopers. USE Vera K o 4 00,00 b (2)Push the desired band key on the keypad once or Twice: *2 different frequencies can be selected on each band with the band key. (See DBMS: in:the Box: before} BLANK: =3 1200.00 . 3) Rotate the main dial fo set the desired frequency. = 2129500 .
BASIC OPERATION 3 B Direct frequency entry with the keypad The IX-737 -has a keypad for direct frequency entry. Follow the steps-as described below. {1y Push [INFREQUENT *The red indicator on: the switch lights: 2 input the desired frequency. = IDOL decimal point) between MH2 (it and kHz unit (G Push [ENT] to northeaster input frequency.
4 B Memo pad operation Ethic-737 has a'memo pad function to store frequent: ey and operating ‘mode: for: easy: write and: recall: The memo pads are separable from memory channels: The default number of memo pads s 5, however this can be increased 1o 10N the sat made if needed {p. 323 FUNCTION OPERATION The meme pad function'is convenient when you want to memorize: & frequency and operating: mode temporally, such:as: when you find a DX station in.
M Split frequency operation Split frequency aeration allows you to transmit ang receive on two different frequencies: The split frequency operation'is basically performed us: ing 2 frequencies on 2 Vets. Following: is:an sample of setting: 21290 MHz for receiving and 21.310 MHZ for transmitting. (T 86t 21.290 MHz (USB) in the VEQ mode. *Both-SEQ A and VFO B can b used: ~zio9000 . Push and nod {SPLIT] for 1 seo.
. 4 FUNCTION OPERATION B RIT and ATX GRIT function The: RIT function shifts the receive: frequency up 1o 2125 kHz'in 10 Hz steps without moving the transmit frequency: *Seo @ on'p. 5 for function description: s See . 3110 expand the RIT range 1o £ 2 5:kHz I this: case, the RIT frequency varies in 20 Hz steps: (Ty Push the [RIT] switch. e i M Os . 2)Rotate the (RITALIN] control. £ AT (g =125 kHy +1.26 kM {OF 2.
4 FUNCTION OPERATION B Set mode operation The 'set mode is: used for programming infrequently changed values or conditions of functions: This tarn: scepter's sel mode: has 13 totems: +Set mode operation (D Push [POWER] OUT 1o turn power OFF. (@1 While pushing [FREQ-NIP] and [ENTENTE.
UNCTION OPERATION 4 (4) Scan resume "Screwy You can select scan resume or cancel for when an operating scan. detects a signal, When selecting resume (ON); the scan pauses 10 sec; on the detected signal; then it resumes Hone signal disappears: while the scans paused, the stein resumes 2 sec. after 1o search for other signals; When selecting cancel (OFF), the scan stops and turns: OFF tater detecting & signal.
4 FUNCTION OPERATION {9) Quick split function “g-SPLIT! The [SPLIT] switch can be used to set split frequency operation and VFO frequency equalization simulate: spontaneously. Her “on' {3 selected: the [SPLIT] intellectualizes VFO frequencies and operating modes when pushed and ekl When “oFE" jg-selected, the [SPLIT] switch cannot equalize VEO frequencies and operating: modes.
UNCTION OPERATION 4 M Band memory (for automatic antenna selection) .32y The IF-737 covers 0.5 <30 MHZ with 13 bands Each ,wmflwflmmqg TEAM w KD band has 2 band memory which can memorize a select: antenna (anteing 1 or antenna 2. W Her you -s 1‘999@9 i iy change the operating frequency beyond & band, the 181 2 m previously used antenna is automatically selected for Mz the new band.: This function is convenient when you 3.0~ 3:99098 MHz 80 m band use 2 antennas. 4.055.95089 MHZ 6.0~ 7.
4 FUNCTION OPERATION M Antenna tuner operation The: internal . automatic antenna tuner. matches the 0737 to the connected antenna automatically. Once the tuner matches an.antenna, the variable capacitor angles are memorized as a preset point for each band (pi:34). ‘Therefore; when you change the band, the variable capacitors are-automatically prates for the Muawiya defected band:: This shortens the tuning period: CAUTION: NEVER transmit with the tuner ON when no antenna is connected.
FUNCTION OPERATION 4 B Optional external antenna tuner operation AH-3 HE AUTOMATIC ANTENNA TUNER The AH-3 matches the IF-737 to a long wire antenna more than 3 m/A10 ft long (3.5 MHz and above) or more than 12 m/40 ft long and above), #See p 15 for the transceiver and AH-3 Conn action. * See the AH3 instruction manual for AH:3 installation and Antenna connection details * 566 p. 68 for AM:3 and ‘AH:2h details. AH-Z setting example: For.
= 5 MEMORY CHANNELS 37 B Memory channels The IF-737 has 101: memory channels. . The memory. rode & very useful for-quickly changing 1o often used frequencies: Memory channels 1+ 89 can be programmed with ong frequency ‘and one mode each. Memory channels 80209, 'P1 and P2 also have: special: functions described in the table below. All 101 memory channels are unable which means the programmed frequency can be tuned temporarily with the main:dial, etc. in the memory mode. Regular-memory.
N Memory channel programming Memory channel programming can be performed either In the-VFQ mode o in'the: memory mode. MEMORY CHANNELS 5 *Programming in the VFO mode (inset the desired frequency and operating made in the VFQ: mode. [M-CH] to select the desired memory channel to:be programmed. *Confinement the: memory channel contents; push {MEMOIR: thin rush [MOVEMENT] again 1o return to:the VEQ mode; + (0" appears if the selected memory chanticleer isa bank channel @and doss not have contents).
MEMORY CHANNELS B B Split memory channels (for accessing a repeater) Memory: channels 90~ 99 are spit memory. channels and can be programmed for both transmit and receive frequencies and operating modes. These memory channels are especially: useful for repeater operation. *Split memory channel selection Select memory channel in hydrangea: between with [M-CH] In the memory mode.
5 MEMORY CHANNELS *Split memory channel operation When one of the memory channels 90~ 09 is select‘ed and the memory channel has been programmed with: 2-frequencies, split frequency operation is-automatically: selected: (electable the memory mode. (B Select a programmed spoil memory channel; @Y Transmit *Parsnips while transmitting. ) Return o receive. %5 disappears while receiving.
M Scan edge memory channels Memory channels Pl and P2 are scan edge memory. channels. These memory channels are used 1o program scan edge frequencies for programmed scan. (b Ad) MEMORY. CHANNELS B Scan edge memory channels can be programmed for. 1 frequency and 1 operating mode like regular memory. channels. However, memory clearing is impossible: Only overwriting is: possible for scan: edge: memory channels.
E 6 scans M Scan types The IF-737 has S types of scan functions which provide tremendous scanning versatility at the touching & few switches: Select the scan which matches our operating needs. PROGRAMMED SCAN Repeatedly scans between two scan'edge frequents vie {scan edge memory channels P1 and P2). Sean | Scan sedge Poor B2 Scan edge P2 on B Jap. This scan operates in the VFO mode: MEMORY SCAN Repeatedly scans all: programmed: emery channels. This scan: operates in the memory mode.
M Programmed scan operation SCANS B (1) Select the VFO mode. @) elect the desired prating mods; *The ‘operating mode’ tan: be changed ‘even 'while Scanning: Set SQL] open or closed. *See mage flatfeet for scan condition. @ Push [SCAN] to start the ‘scan. * Decimal points: blink While: scanning. & When the scan detects & signal, the scan stops, pausesorignoresitdepending on the resume set: ting-and the squelch: condition: »During scan:the (18} switch can be used: {6) To cancel:the scan.
= 7 MAINTENANCE AND ADJUSTMENT M Disassembling the transceiver Follow the transceiver disassembly procedures shown here when you want oi-instali an optional unit, adjust the internal Units, 07 1o replace an internal fuse, etc. CAUTION: DISCONNECT the DC: power cable from the transceiver before performing any work on 1he transceiver. &) REMOVING COVERS To remove top and bottom covers, unscrew the 18 Resews as shown in the figure below.
MAINTENANCE AND ADJUSTMENT 7. © REMOVING THE PA UNIT () Pull the front unit forward. 2} Disconnect the 6-pin fig from P13, (21 Disconnect the 3-pin plug from Q1 @i Disconnect the 4-pin plug from J2. (5} Remove the PA unit as shown in the figure below. PA unit Front unit Pay attention o connect: o1 orientation when reconnecting o Q1. ®OPENING THE PA UNIT (T Remove the PA Unit as shown in the bok at left. (71 Unscrew the 16 screws 1o remove the PA unit shield cover ag shown in the figure below.
7 MAINTENANCE AND ADJUSTMENT W Fuse replacement 1 fuse blows o the transceiver steps sanctioning, fry to-find: the source: of the: problem; .and: replace tha damaged fuse with a new, rated fuse. CAUTION: DISCONNECT the DU power cable from the Transceiver wham changing a fuse. The IF-737 has 2 types of fuses Installed for transceiver protraction. = DO power cable fuses 204 s Circuitry fuse: FoGEMIBII2E V4 A DC POWER CABLE FUSE REPLACEMENT Ly 2074 fuse: CIRCUITRY FUSE REPLACEMENT The 13.8 V.
e MAINTENANCE AND ADJUSTMENT 7. M Frequency calibration (approximate) Avery accurate frequency: counter s required to calibrate the: frequency of the IF-737. However, g rough check may e performed by receiving ado station Norw other standard frequency signals) The calibration can be performed in each operating mode. . The calibration range s 21,25 kHz in 10 Hz. step. CAUTION: Your IX-737 has been thoroughly adjusted and checked:at:the factory before being shipped. .
7 MAINTENANCE AND ADJUSTMENT M CW side tone level preset LW SIDS tone outputting be controlled by [AF GAIN. 1t you want to change the basic CW side tons level, perform the procedure: described at right. {I)Remove the fop and Bolton covers. (p. 45} {2 Adjust 'R238 a8 shown in the ‘diagram at left. @ Replace the top and bosom covers. M BFO adjustment BF adjustment: requires: an accurate: frequency counter {less: than 1 ppm). Conn est the frequency counter 1184 neither man unit. See p.
M PA idling current adjustment MAINTENANCE AND ADJUSTMENT 7 The:PA unit operates with: & linear amplifier and requires some idling current to flow through the driver. ang final transistors: to obtain jabs voltage. PA UNIT DRIVER: TRANSISTORS IDLING CURRENT. Am mater £ 2 © w14 o~ 00 miA by 18 FINAL TRANSISTORS IDLING CURRENT. (Fig. 2) GR8, EPEE {Fig.
8 M CW narrow filters OPTIONS INSTALLATION Ethel-737 has 2 Rowena mode to provide better SN (signal 1o noise ratio); or 1o reject nearby inters reference. Souse the Narrow mode; optional CW. filters are necessary. : 1.0r 2 CW narrow filters can: be installed in the IF circlets. SELFISH or FL-107 can be installed in the 2nd IF circuit. #FL:52A or PL-53A can be installed in the Brd IF circuit.
OPTIONS INSTALLATION 8 B CR-282 high-stability crystal unit By replacing the original crystal unit with this unit, the total frequency stability of the transceiver will be improved. Anteing tinier: Flitting Logic unit CR-2B2 frequency stability '3 05 ppm (302G = 60°C: P00 RA00F) G Turnover the top arid bottom covers and the PA Nit; then, prepare the PLL Unit removal following the disassembly procedures (A1~ on pgs. 4546 {Moreover the PLL unit as shown in figure 1 at Left.
57 11 specifications M GENERAL * Frequented coverage: Receive 500 kHz ~ 28,095 MHz Transmit 18001 1.90008 MH2 3:600 = 4000 MHZ 70001730011 MHZ 01005104500 i MHE 14,000 594,350 MHz 1800818188 MH2 1 MHz 2489024800 MHz 281000287001 MHZ *Mode 1ST CAM FM “Number of memory 101 channels s Antenna impedance’: 50 ) nominal o {Usable temperature = 1020 = 4 80905 range F14E S 100 * Frequency stability: D L1665 than £200 Hz fom 1 mini B0 min, after power ON.
option S 12 CT-16 SATELLITE INTERFACE unit i Any tumbling-forinstant satellite communications, LEVEL CONVERTER For remote transceiver control Using d personal Computed equipped with Urban-232C port. . You gan change! frequencies, operating mode; memory channels, elc. vid your computer Keyboard: CR-282 HIGH-STABILITY CRYSTAL UNIT Contains 4 overcompensation: ing oven heater and crystal obit for. improved frequency stability. »Frequency stability 0.
