User manual ICOM IC-T21A-E

[. . . ] DEFINITION Personal injury, fire hazard or electric RWARNING shock may occur. NEVER operate the transceiver with a headset or other audio accessories at high volume levels. If you experience a ringing in your ears, reduce the volume or discontinue use. NEVER connect the transceiver to an AC outlet or to a power source of more than 16 V DC. [. . . ] 10 BASIC OPERATION I Power ON Rotate [PWR/VOL] clockwise to turn power ON. 4 I Setting a frequency D Via the keypad Push [A V] to select VFO mode, if necessary. Push 6 digit keys, starting from the 100 MHz digit, to input a frequency. 1 4 5 MR D Toggling frequency/channel indication mode AT POWER ON · Push the [M] key first to start input from the 100 kHz digit, if desired. · When a digit is mistakenly input, 5 push [ ] and input from the beginMR ning. · "2" and "7" are acceptable for the 1 kHz digits (depending on the 10 kHz digit). 0 0 Channel indication mode is used to simplify operation. In this mode only pre-programmed memory channel numbers are displayed and functions are limited ([PWR/VOL], [D L], [PTT], [ ], [H/L] and [SC] are functional). To toggle between the indication modes: While pushing [Z] + [0], rotate [PWR/VOL] to turn power ON. D Using the [Y]/[Z] keys Each push increments/decrements the frequency according to the selected tuning step (see right), except when the 100 kHz or 1 MHz dial select step is selected (see following page). When a dial select step is selected, each push increments/decrements the frequency either 100 kHz or 1 MHz. at power ON 0 Frequency indication Channel indication 11 4 BASIC OPERATION I Dial select function Use the dial select function to adjust the tuning behaviour or the [Y]/[Z] keys--use 1 MHz tuning when you want to change the frequency in large increments; use the selected tuning step when you want to change the frequency in smaller increments. I Receive and transmit Rotate [PWR/VOL] clockwise to turn power ON. Adjust volume to the desired level. · While pushing [ ], rotate [VOL]. Set a frequency. When a signal is received: Squelch opens and audio is emitted from the speaker. "BUSY" appears and the S/RF indicator shows the relative signal strength. Push [t] one or more times to select the desired [Y]/[Z] key tuning increment. · 1 MHz tuning, 100 kHz tuning or 1 MHz tuning selected regular tuning steps can be selected (see diagram at right). 100 kHz tuning selected Push [H/L] to toggle output power between high and low. · "LOW" appears when low output power is selected. Push and hold [PTT] to transmit; then speak into the microphone. · Do not hold the microphone too close to your mouth or speak too loudly. · The S/RF indicator shows the output power selection. Regular tuning selected Release [t] to return to normal operation. 12 BASIC OPERATION 4 Convenient Monitor function: Push and hold [ ] to listen to weak signals that do not open the squelch; or push [ ] twice to monitor a signal without having to continuously hold [ ]. Squelch control: The transceiver employs a noise pulse count system and therefore, squelch is adjusted automatically when "AUto" is selected for the squelch level: Push [SQL], then push [Y]/[Z] one or more times until "AUto" appears. Offset frequency of · Selectable steps are the same as the 0. 60 MHz is selected. pre-set tuning steps. Push [A V] to enter the selected offset frequency and exit set mode. Push [B M] for 1 sec. Available subaudible tone frequencies 67. 0 69. 3 71. 9 74. 4 77. 0 79. 7 82. 5 85. 4 88. 5 91. 5 94. 8 97. 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 (unit: Hz) 203. 5 206. 5 210. 7 218. 1 225. 7 229. 1 233. 6 241. 8 250. 3 254. 1 16 REPEATER OPERATION INITIAL SET MODE I Auto repeater function (USA version only) USING 5 The USA version automatically activates the repeater settings (duplex, ON/OFF, duplex direction, tone encoder ON/OFF) when the operating frequency falls within or outside of the general repeater output frequency range. The offset and repeater tone frequencies are not changed by the auto repeater function, reset these frequencies, if necessary. Frequency range and offset direction FREQUENCY RANGE 145. 200­145. 495 MHz 146. 610­146. 995 MHz 147. 000­147. 395 MHz DUPLEX DIRECTION "­DUP" appears "DUP" appears While pushing [8] + [0], turn power on to enter initial set mode. Push [t] one or more times until "AR" appears. Push [Y]/[Z] to select the desired condition. · "oFF"--the auto repeater function is turned off; "on1"--the auto repeater function activates for duplex only; "on2"--the auto repeater function activates for duplex and tone. MR Turn power off, then on again to exit initial set mode. 17 5 REPEATER OPERATION WEATHER CHANNELS (USA version only) There are 10 weather channels for monitoring weather channels from the NOAA (National Oceanographic and Atmospheric Administration) broadcasts. NOTE: The weather channel frequencies are out of the guaranteed frequency range (see p. Intermittent reception and/or poor signal quality may occur depending on conditions. Enter key customize mode (p. 31) and assign the weather function to one of the keys, if necessary. Push [f(WX)] to select weather channel mode. · "WX" and the weather channel number appear. Push [Y]/[Z] to select the desired weather channel. NOTE: Weather channels appear in frequency indication mode only. 18 MEMORY/CALL PROGRAMMING I General The transceiver has 40 memory channels (plus 1 pair of scan edge channels and 1 call channel) for storage of often-used frequencies. In addition, the USA version has 10 marine weather channels (however, these are not programmable). 6 I Programming a memory channel Push [A V] to select VFO mode, if necessary. D Memory/call channel contents The following information can be programmed into memory/call channels: · Operating frequency · Duplex direction (DUP or ­DUP) with an offset frequency (pgs. 25) *Except for scan edge memory channels. Push 6 digit keys to enter the desired frequency. [. . . ] Some functions are not · The desired function(s) has not been assigned to · Set the desired function(s) using Key Customize p. available. 37 14 SPECIFICATIONS : USA ASIA EUR KOR TAIWAN TX RX (Unit: MHz) 144­148 136­174* 136­174* 144­146 144­146 145­146 RECEIVER · Receive system · Intermediate frequencies · Sensitivity · Squelch sensitivity · Spurious and image rejection · Audio output power (at 9. 6 V DC) GENERAL · Frequency coverage TRANSMITTER · Modulation system · Output power (at 9. 6 V DC) · Max. microphone connector : Variable reactance modulation : High 6 W (typ. : 144­148 MHz) 5 W (Thailand version) Low 1 W (typ. : 144­148 MHz) : ±5 kHz : Less than ­60 dB : 3-conductor 2. 5(d) mm (1/10); 2 k *Guaranteed range: 144­148 MHz. : F2/F3 : ±10 ppm (0°C to 50°C; 32°F to 122°F) : 50 (nominal) : 9. 6 V DC (Ni-Cd × 8; negative ground) : 1. 6 A (at 6 W; typ. ) 1. 5 A (Thailand version) Rx Rated audio 210 mA (typ. ) Power saved 25 mA (typ. ) Standby 80 mA (typ. ) · Scan speed : VFO mode 16 ch/sec. · Usable temperature range : ­10°C to +60°C; +14°F to +140°F · Dimensions : 58(W)×140. 5(H)×32. 3(D) mm; 29/32(W)×517/32(H)×19/32(D) in · Weight : 420 g; 14. 8 oz (incl. 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