User manual ICOM IC-737A

[. . . ] We would like to take a couple of moments of your time to thank you for making your IC-737A your radio of choice, and hope you agree with Icom's philosophy of "technology first. " Many hours of research and development went into the design of your IC-737A. SUPPLIED ACCESSORIES The transceiver comes with the following accessories. 1 D FEATURES +30 dBm class IP3 (at 14 MHz band) and further improved 3rd order IMD characteristics Real time spectrum scope with mini-scope function Boudot RTTY demodulator and RTTY transmit message memory Selectable SSB transmission passband width (Each for Higher and lower pass frequency) Digital IF filter allows you to select 51 types of filter shapes while receiving a station q w e r t Spurious may be received near the following frequencies. These are made in the internal circuit and does not indicate a transceiver malfunction: 6. 144 MHz, 8. 000 MHz, 12. 288 MHz, 12. 890 MHz (when spectrum scope is ON), 18. 433 MHz, 24. 573 MHz, 52 MHz i Icom, Icom Inc. and the are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries. PRECAUTIONS R WARNING RF EXPOSURE! [. . . ] Select an item with [(FY Z 1)Y]/[(F-2)Z] then rotate the tuning dial to adjust the audio tone. 51 RECEIVE AND TRANSMIT 4 Repeater operation A repeater amplifies received signals and retransmits them at a different frequency. When using a repeater, the transmit frequency is shifted from the receive frequency by an offset frequency. A repeater can be accessed using split frequency operation with the shift frequency set to the repeater's offset frequency. For accessing a repeater which requires a repeater tone, set the repeater tone frequency in set mode as described below. [VFO/MEMO] [SPLIT] Band keys q Set the offset frequencies (HF, 50 MHz) and turn ON the quick split function in set mode (others) in advance. to start repeater operation. · Repeater tone is turned ON automatically. · Shifted transmit frequency and "TX" appear in the sub readout. · The transmit frequency can be monitored while pushing [XFC] or using dualwatch. 4 u Push and hold [PTT] to transmit; release [PTT] to receive. i To return to simplex, push [SPLIT] momentarily to clear the sub display. [AM/FM] ANT 1 Tuning dial qw:pp 12:00 [XFC] BW 15k SFT 0 FM FIL2 TONE VFO METER Po P. AMP 1 ATT OFF wo. yip. pp 1 14. 100. 00 SPLIT SPLIT USB TONE TX TX VFO FM FIL2 wo. tip. pp 1 14. 100. 00 USB Shifted frequency appears. Tone encoder is automatically turned ON. D Setting the repeater tone Some repeaters require subaudible tones to be accessed. Subaudible tones are superimposed over your normal signal and must be set in advance. r Rotate the tuning dial to select the desired repeater tone frequency. AGC FAST VOX OFF TONE OFF é è DEF T-SCAN TONE FREQUENCY REPEATER TONE T-SQL TONE 88. 5Hz 88. 5Hz t Push [EXIT/SET] to exit tone set mode. Available repeater tones [TONE] [(F-1)Y] [AM/FM] [EXIT/SET] Tuning dial 67. 0 69. 3 71. 9 74. 4 77. 0 79. 7 82. 5 085. 4 088. 5 091. 5 094. 8 097. 4 100. 0 103. 5 107. 2 110. 9 114. 8 118. 8 123. 0 127. 3 131. 8 136. 5 141. 3 146. 2 151. 4 156. 7 159. 8 162. 2 165. 5 167. 9 171. 3 173. 8 177. 3 179. 9 183. 5 186. 2 189. 9 192. 8 196. 6 199. 5 203. 5 206. 5 (Unit: Hz) 210. 7 254. 1 218. 1 225. 7 229. 1 233. 6 241. 8 250. 3 CONVENIENT Store repeater tone frequencies and ON/OFF settings in memory channels for easy recall. 52 4 RECEIVE AND TRANSMIT Tone squelch operation The tone squelch opens only when receiving a signal containing a matching subaudible tone. The spectrum scope shows the transmit signal waveform while transmitting. When "OFF" is selected, the spectrum scope holds the received waveform while transmitting and does not show the transmit waveform. q During spectrum scope indication ON, push [(F-5) SET] to select scope set mode screen. r Rotate the tuning dial to select the desired condition. · Push [(F-3)DEF] for 1 sec. to select a default condition. 5 [(F-1)Y] [(F-2)Z] [EXIT/SET] [(F-3)DEF] AGC MID VOX OFF COMP OFF WIDE é SCOPE S E T S C O P E SET S c o p e d u r i n g Tx e during T x M a x H o l d x Hold ON ON ON ON t Push [EXIT/SET] to exit spectrum scope set mode. è DEF Scope during Tx Turn the transmitting signal waveform indication ON and OFF. When "OFF" is selected, the spectrum scope holds the received waveform while transmitting and does not show the transmit waveform. (default: ON) Max Hold Turn the peak level holding function ON and OFF. (default: ON) 56 5 FUNCTION FOR RECEIVE Preamplifier The preamp amplifies received signals in the front end circuit to improve the S/N ratio and increase the sensitivity. Push [P. AMP] several times to set the preamp OFF, preamp 1 ON or preamp 2 ON. · "P. AMP2" activates 16 dB high-gain preamp for 24 MHz band and above. [P. AMP] Regarding the use of the "P. AMP 2" (Pre-amplifier 2) The "P. AMP 2" is a high gain receive amplifier. When the "P. AMP 2" is used during times of strong electric fields, distortion sometimes results. [. . . ] The amplifier/power supply unit and the remote control unit are separated. AH-4 HF/50 MHz AUTOMATIC ANTENNA TUNER AH-2b ANTENNA ELEMENT Light weight switching regulator system power supply. · Output voltage: 13. 8 V DC · Max. current drain: 25 A SM-20 DESKTOP MICROPHONE A 2. 5 m long antenna element for mobile operation with the AH-4. Specially designed to tune a long wire antenna for portable or mobile HF operation. [. . . ]