SECTION 2 FEATURES ALL BAND, ALL MODE, ALL SOLID STATE The 1-740: covers all the Amateur HF frequencies from 'MHz 1028 including the new three bands of MHz, MHZ and Zamora, 1t offers ot only SSB, nu tales CW and B TTY {FM option. "Aloof the circuits in the 10740, including the driver and final power stages are completely solid state, and provide about 100 watts output.
3 INSTALLS BE SURE TO READ THE FOLLOWING INSTRUCTIONS CAREFULLY BEFORE OPERATION 31 UNPACKING Carefully remove your transceiver therefrom packing carton. and .examine: it -for: signs ot shipping damage... Should: any. e apparent, notify ‘the delivering carrier or: dealer immediately stating the full extent ‘of ‘the damage: Rt recommended you keep the shipping ‘cartons. nth event storage) snowing. ar reshipment becomes necessary they will ‘he handy: Accessory cables. plugs, 8t ate.
external {EXT) speaker frack ‘on the rear panel. Ba'sire the impedance of externalize speaker is § ohms, and remember that with: 'the. external ‘speaker: connected. the internal Speaker is disabled. 3510 HEADPHONES Goodman headphone site; chiding stereo tape, that have 416 ohms.impedance: can:be used: :With: the plug inserted halfway. into the PHONES: jack. both the headphone and speaker:will: operate.
appear. This allows you o set a certain frequency with one MFO; work up-and-down the: band with-the other VFO, aad periodically: check the: set frequency simply: by switching between: "Armand BOGYMEN; 51t also altos you ta search: for & clear frequency ‘with: Onegin; :while keeping your: operating frequency: .on: tha: other -V FO. = When: you have found: a clear: frequency;: switchback X 'your: aerating: frequency; inform the station you are v contact with of the new frequency; aad switch back.
Alsop there is only one memory for L.BMEZ gnd 3 MHZ bands. However the memory can be used for the both bands. For example: when 1.B05S s written in: the memory, it can be used for 3.805.5 s well. MEMORY-HEADING: Just push the MEMORY Winch. At whichever! dentifrice the A% or ¥BY VFO has' been set, ‘that ‘previously. programmed frequency s recalled.: When the MEMORY Switch is. pushed: again ‘and ‘released, the previous operating frequency.
Change to the receive mode by moving the T/8 switch 1o receive, or release the microphone FTT switch 620 HOW:TO USE: THE ‘SPEECH ‘PROCESSOR The 16740 has 2 low distortion AF speech: processor which: ‘enables greater talk power and better results in DX opera: tior. Follow ‘the ‘wastepaper for use: of the Peach Processor: MIC :GAIN CONTROL: CENTER: {12 o'clock} RE POWER CONTROL: Fully.
st mixer, the reverse of receive. ‘therm to tve band-sass filter arid s amplified by Q11 and fed 10 the PA unit. 6-3 IR UNIT This unit is: consisting of MHz crystal: filters for various mods [ 2nd 1F amplifiers, hotel fitter, 3rd mixers for receiver and transmitter, 3rd locate oscillator (IF withstand Pass: Band Tuning control circuit, 4BBKHz ceramic filter and as peach processor for the transmitter.
squelch is closed... When the squelch pensioned. the AF signal is fed 1o the AF GAIN control then an amplifier (119 n:S58; RATTY or EM mode, of an AF filter 018 in CW Rhode; hen: the IAE: prows amplifier 110 10" got ‘toughener power to drive the speaker Dinging transmit, an AE signs! from: the microphone is fed o the AF amplifier [G3, then the balanced modulator; this being one and the same with the receiver product detector; throughout: MIC GAIN control.
Abattoir the power tussocky Tithe popover socket of the set g 8F % Softhearted Palmtop these cooling fan the et 4. Pansy the DO power cable attached 10 P 1 through the hole of the AG power socket plate as shown in the illustration; than insert the bushing into the hot, Attach: she AC power socket plate fo the position where the PLATE {A} was attached before. by Using the scrags described i1, 5o that ‘the ‘AC power docket is toward ‘the bottom of the set. Ease the DC power stale through this.
