User manual ICOM IC-735

[. . . ] The dot-matrix portion of the LCD shows the following items: · Channel name · Function key assignment · Band Scope · RTTY decoder screen · Memory keyer contents · Graphical SWR scale RTTY Demodulator and Decoder ­­­­­­­­­­­­­­ The built-in RTTY demodulator and decoder reads baudot RTTY signals on the screen without turning on your PC or other gear. The RTTY tuning indicator helps critical tuning. The Twin Peak filter removes interfering QRM giving you a more accurate decoded message. 32-bit Floating Point DSP 24-bit AD/DA Converter Digital Noise Reduction ­­­­­­­­­­­­­­­­­­­­ By digitally manipulating the incoming signal, the DSP is able to reduce various types of noise and enhances the receive signal components. Providing an outstanding signal to noise ratio to give clean, clear audio. Comparison of receive signal speaker output NR OFF NR ON Ample CW Functions ­­­­­­­­­­­­­­­­­­­­­­ Soft for CW [dB] 0 ­10 ­20 ­30 ­40 ­50 ­60 ­70 ­80 ­90 ­100 ­800 ­600 ­400 ­200 0 500Hz 200 400 600 800 [Hz] Sharp for CW Multi function electronic keyer, variable dot/dash ratio (2. 8:1 to 4. 5:1) and key speed (6-60 WPM), paddle polarity, bug key etc. [. . . ] Double key jacks ­ one each for front and rear panel. All Mode Digital Modulation and Demodulation AGC Loop Management ­­­­­­­­­­­­­­­­­­­­ Another first in this class of transceiver, the IC-735 incorporates a multiple AGC loop management system, which uses the DSP filtering to remove unwanted signals from the AGC control. This means, if an unwanted signal is removed using the DSP, the AGC will not be affected. In other words, "No more pumping of the AGC!" A/D DET D/A AF Also, the AGC is indepenManual IF NOTCH Filter AGC dently controllable for mode 3Lo AGC and the time settings. D/A DSP (Off, 0. 1-6. 0 or 8. 0 sec. ) H z 5k kH z 45 36 Memory Keyer ­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 4 channel memory keyer stores up to 50 characters with serial contest number auto-counter, morse cut number and auto repeat function. In addition, a user supplied external keypad* controls the memory keyer from your finger tips. * Not supplied by Icom. Let's start with the modulation and demodulation of the signals. For signal purity and clarity, an all mode digital PSN (Phase Shift Network) system has been incorporated into the DSP system. For transmit, this greatly reduces the intermodulation distortion, producing the highest quality transmit audio. While the PSN separates the signal from noise by phasing out noise and other unwanted signals. Soft for SSB [dB] 0 ­10 ­20 ­30 ­40 ­50 ­60 ­70 ­80 ­90 ­100 ­3000 ­2000 ­1000 0 2. 4kHz 1000 2000 3000 [Hz] [dB] 0 ­10 ­20 ­30 ­40 ­50 ­60 ­70 ­80 ­90 Sharp for SSB Built-in Antenna Tuner ­­­­­­­­­­­­­­­­­­­­­­ The internal antenna tuner matches the HF and 50MHz bands automatically. After operating on a band for the first time, the tuner memorizes the selected antenna and preset point providing for very high speed tuning. audio 3. 0A · Dimensions : 287(W)×120(H)×316. 5(D) mm (projections not included) · Weight (approx. ) · Squelch sensitivity (Preamp: OFF): SSB, CW, RTTY Less than 5. 6µV FM Less than 1µV · Selectivity (representative value): SSB (BW: 2. 4kHz) More than 2. 4kHz/­6dB Less than 3. 2kHz/­40dB Less than 3. 6kHz/­60dB Less than 4. 3kHz/­80dB More than 500Hz/­6dB CW (BW: 500Hz) Less than 700Hz/­60dB RTTY (BW: 350Hz) More than 360Hz/­6dB Less than 650Hz/­60dB AM (BW: 6kHz) More than 6. 0kHz/­6dB Less than 15. 0kHz/­60dB FM (BW: 15kHz) More than 12. 0kHz/­6dB Less than 20. 0kHz/­60dB · Spurious and image : More than 70dB (HF/50MHz) rejection ratio More than 60dB (144MHz) (except IF through on 50MHz) RECEIVER : Triple conversion superheterodyne system · Intermediate frequencies: 1st 64. 455MHz 2nd 455kHz 3rd 36kHz · Sensitivity (typical) : Frequency SSB, CW, RTTY Range (MHz) (at 2. 4kHz BW) 0. 50­1. 799 -- 1. 80­27. 99 0. 16µV*1 28. 0­29. 99 0. 16µV*1 AM (at 6kHz BW) · AF output power (at 13. 8V DC) · Receive system · RIT variable range · PHONES connector · EXT SP connector : More than 2. 0W at 10% distortion with an 8 load : ±9. 99kHz : 3 conductor 6. 35 (d) mm (1/4) : 2 conductor 3. 5 (d) mm (1/8)/8 ANTENNA TUNER · Matching impedance range 1 FM (at 15kHz BW) · ACC 1 connector · ACC 2 connector · CI-V connector · DATA connector : 9. 0kg : 8-pin DIN connector : 7-pin DIN connector : 2-conductor 3. 5 (d) mm (1/8) : Mini DIN 6-pin :16. 7­150 unbalanced*1 (HF bands) 20­125 unbalanced*2 (50MHz band) 13µV 2µV*1 2µV*1 -- -- 0. 5µV*1 * Less than VSWR 3:1; *2Less than VSWR 2. 5:1 50. 0 ­54. 0 0. 13µV*2 1µV*2 0. 25µV*2 144. 0­146. 0 0. 11µV*3 1µV*3 0. 18µV*3 10dB S/N for SSB, CW, RTTY and AM, 12dB SINAD for FM *1Preamp 1 is ON, *2Preamp 2 is ON, *3Preamp is ON · Min. operating input power: 8W (HF bands) 15W (50MHz band) · Tuning accuracy : VSWR 1. 5:1 or less : Less than 1. 0dB (after tuning) · Insertion loss Supplied accessories: · Hand microphone · Spare fuses All stated specifications are subject to change without notice or obligation. · DC power cable · CW key plug OPTIONS IC-PW1 HF+50MHz 1kW LINEAR AMPLIFIER Covers all HF and 50MHz bands, provides clean, stable 1kW output. Automatic antenna tuner and compact detachable controller are standard. (Not available for EU countries. ) AH-4 HF+50MHz AUTOMATIC ANTENNA TUNER Covers 3. 5­54MHz with a 7m (23 ft) or longer wire antenna. AH-2b ANTENNA ELEMENT A 2. 5m long antenna element for mobile operation with the AH-4. All amateur bands between 7­54 MHz can be matched. SP-20 EXTERNAL SPEAKER 4 audio filters; headphone jack; can connect to 2 transceivers. input power: 5W SP-21 EXTERNAL SPEAKER Style and size are matched to the IC-735. input power: 5W PS-125 DC POWER SUPPLY Style and size are matched to the IC-735. 13. 8V DC, 25A max. SM-20 DESKTOP MICROPHONE Unidirectional, electret microphone for base station operation. [UP/DOWN] switches and a low cut function are available. CT-17 CI-V LEVEL CONVERTER For remote transceiver control using a personal computer equipped with an RS-232C port. [. . . ] 13. 8V DC, 25A max. SM-20 DESKTOP MICROPHONE Unidirectional, electret microphone for base station operation. [UP/DOWN] switches and a low cut function are available. CT-17 CI-V LEVEL CONVERTER For remote transceiver control using a personal computer equipped with an RS-232C port. You can change frequencies, operating mode, etc. UT-102 VOICE SYNTHESIZER UNIT Announces operating frequency and mode. HM-36 HAND MICROPHONE Same as that supplied. CR-338 HIGH STABILITY CRYSTAL UNIT POC type crystal for improved frequency stability. Frequency stability: ±0. 5 ppm 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan Phone: 06 6793 5302 Fax: 06 6793 0013 URL: http://www. icom. co. jp/world/index. html Count on us! Icom America Inc. <Corporate Headquarters> 2380 116th Avenue N. E. , Bellevue, WA 98004, U. S. A. [. . . ]