AFJIC-756PROAmateur Radio Transceiver

INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i756PRO i IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLYbefore attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL.This manual contains important safety and operating in- structions for the IC-756PRO. EXPLICIT DEFINITIONS RWARNING HIGH VOLTAGE! NEVERattach an antenna or internal antenna connector during trans- mission. This may result in an electrical shock or burn. RNEVERapply AC to the [DC13.8V] jack on the transceiver rear panel. This could cause a fire or ruin the transceiver. RNEVERapply more than 16 V DC, such as a 24 V battery, to the [DC13.8V] jack on the transceiver rear panel. This could cause a fire or ruin the transceiver. RNEVERlet metal, wire or other objects touch any internal part or connectors on the rear panel of the transceiver. This may result in an electric shock. NEVERexpose the transceiver to rain, snow or any liquids. AVOIDusing or placing the transceiver in areas with temperatures below –10°C (+14°F) or above +60°C (+140°F). Be aware that temperatures on a vehicle’s dashboard can exceed 80°C (+176°F), resulting in per- manent damage to the transceiver if left there for ex- tended periods. AVOIDplacing the transceiver in excessively dusty en- vironments or in direct sunlight. AVOIDplacing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation. Place unit in a secure place to avoid inadvertent use by chil- dren. During mobile operation, DO NOToperate the trans- ceiver without running the vehicle’s engine. When transceiver power is ON and your vehicle’s engine is OFF, the vehicle’s battery will soon become exhausted. Make sure the transceiver power is OFF before start- ing the vehicle. This will avoid possible damage to the transceiver by ignition voltage spikes. During maritime mobile operation, keep the transceiver and microphone as far away as possible from the mag- netic navigation compass to prevent erroneous indica- tions. BE CAREFUL!The heatsink will become hot when operating the transceiver continuously for long periods. BE CAREFUL!If a linear amplifier is connected, set the transceiver’s RF output power to less than the lin- ear amplifier’s maximum input level, otherwise, the lin- ear amplifier will be damaged. Use Icom microphones only (supplied or optional). Other manufacturer’s microphones have different pin assignments, and connection to the IC-756PRO may damage the transceiver. PRECAUTIONS Versions of the IC-756PRO which display the “CE” symbol on the serial number seal, comply with the European harmonised standard ETS300 684 (EMC product standard for Commercially Available Amateur Radio Equipment). WORD R WARNING CAUTION NOTE DEFINITION Personal injury, fire hazard or electric shock may occur. If disregarded, inconvenience only. No risk of personal injury, fire or electric shock. Equipment damage may occur. 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 SUPPLIED ACCESSORIES The transceiver comes with the following accessories. Qty. qDC power cable (OPC-025D) ............................ 1 wHand microphone (HM-36) ................................ 1 eSpare fuses (FGB 30 A) .................................... 2 rSpare fuse (FGB 5 A) ........................................ 1 tCW keyer plug (AP-330) .................................... 1 1 1 TABLE OF CONTENTS qwe r t IMPORTANT ........................................ i EXPLICIT DEFINITIONS ..................... i PRECAUTIONS ................................... i 1 TABLE OF CONTENTS ................ 1 2 PANEL DESCRIPTION ........... 2 – 13 Front panel ..................................... 2 Microphone (HM-36) ...................... 9 LCD display .................................. 10 Screen menu arrangement ........... 11 Rear panel .................................... 12 3 INSTALLATION AND CONNECTIONS ................... 14 – 21 Unpacking .................................... 14 Selecting a location ...................... 14 Grounding ..................................... 14 Antenna connection ..................... 14 Required connections ................... 15 Advanced connections ................. 16 Power supply connections ............ 17 Linear amplifier connections ......... 18 Transverter jack information ......... 19 External antenna selector or antenna tuner connections ........... 20 FSK and AFSK (SSTV) connections .................................. 21 4 FREQUENCY SETTING ....... 22 – 25 When first applying power (CPU resetting) ............................. 22 Initial settings ................................ 22 VFO description ............................ 23 Frequency setting with the tuning dial ..................................... 24 Direct frequency entry with the keypad .................................... 24 Advanced tuning functions ........... 25 5 RECEIVE AND TRANSMIT .. 26 – 49 Mode selection ............................. 26 Twin PBT operation ...................... 26 Notch function .............................. 27 Noise reduction ............................ 27 Noise blanker ............................... 27 RTTY filter/Twin peak filter ........... 28 CW reverse mode ......................... 28 RTTY reverse mode ..................... 28 CW pitch control ........................... 29 IF filter selection ........................... 29 AGC function ................................ 30 Dualwatch operation ..................... 31 Split frequency operation .............. 32 Quick split function ....................... 33 RIT and ∂TX ................................ 34 Monitor function ............................ 35 VOX function ................................. 35 Meter function ............................... 36 SWR reading ...…

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INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i756PRO i IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLYbefore attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL.This manual contains important safety and operating in- structions for the IC-756PRO. EXPLICIT DEFINITIONS RWARNING HIGH VOLTAGE! NEVERattach an antenna or internal antenna connector during trans- mission. This may result in an electrical shock or burn. RNEVERapply AC to the [DC13.8V] jack on the transceiver rear panel. This could cause a fire or ruin the transceiver. RNEVERapply more than 16 V DC, such as a 24 V battery, to the [DC13.8V] jack on the transceiver rear panel. This could cause a fire or ruin the transceiver. RNEVERlet metal, wire or other objects touch any internal part or connectors on the rear panel of the transceiver. This may result in an electric shock. NEVERexpose the transceiver to rain, snow or any liquids. AVOIDusing or placing the transceiver in areas with temperatures below –10°C (+14°F) or above +60°C (+140°F). Be aware that temperatures on a vehicle’s dashboard can exceed 80°C (+176°F), resulting in per- manent damage to the transceiver if left there for ex- tended periods. AVOIDplacing the transceiver in excessively dusty en- vironments or in direct sunlight. AVOIDplacing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation. Place unit in a secure place to avoid inadvertent use by chil- dren. During mobile operation, DO NOToperate the trans- ceiver without running the vehicle’s engine. When transceiver power is ON and your vehicle’s engine is OFF, the vehicle’s battery will soon become exhausted. Make sure the transceiver power is OFF before start- ing the vehicle. This will avoid possible damage to the transceiver by ignition voltage spikes. During maritime mobile operation, keep the transceiver and microphone as far away as possible from the mag- netic navigation compass to prevent erroneous indica- tions. BE CAREFUL!The heatsink will become hot when operating the transceiver continuously for long periods. BE CAREFUL!If a linear amplifier is connected, set the transceiver’s RF output power to less than the lin- ear amplifier’s maximum input level, otherwise, the lin- ear amplifier will be damaged. Use Icom microphones only (supplied or optional). Other manufacturer’s microphones have different pin assignments, and connection to the IC-756PRO may damage the transceiver. PRECAUTIONS Versions of the IC-756PRO which display the “CE” symbol on the serial number seal, comply with the European harmonised standard ETS300 684 (EMC product standard for Commercially Available Amateur Radio Equipment). WORD R WARNING CAUTION NOTE DEFINITION Personal injury, fire hazard or electric shock may occur. If disregarded, inconvenience only. No risk of personal injury, fire or electric shock. Equipment damage may occur. 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 SUPPLIED ACCESSORIES The transceiver comes with the following accessories. Qty. qDC power cable (OPC-025D) ............................ 1 wHand microphone (HM-36) ................................ 1 eSpare fuses (FGB 30 A) .................................... 2 rSpare fuse (FGB 5 A) ........................................ 1 tCW keyer plug (AP-330) .................................... 1 1 1 TABLE OF CONTENTS qwe r t IMPORTANT ........................................ i EXPLICIT DEFINITIONS ..................... i PRECAUTIONS ................................... i 1 TABLE OF CONTENTS ................ 1 2 PANEL DESCRIPTION ........... 2 – 13 Front panel ..................................... 2 Microphone (HM-36) ...................... 9 LCD display .................................. 10 Screen menu arrangement ........... 11 Rear panel .................................... 12 3 INSTALLATION AND CONNECTIONS ................... 14 – 21 Unpacking .................................... 14 Selecting a location ...................... 14 Grounding ..................................... 14 Antenna connection ..................... 14 Required connections ................... 15 Advanced connections ................. 16 Power supply connections ............ 17 Linear amplifier connections ......... 18 Transverter jack information ......... 19 External antenna selector or antenna tuner connections ........... 20 FSK and AFSK (SSTV) connections .................................. 21 4 FREQUENCY SETTING ....... 22 – 25 When first applying power (CPU resetting) ............................. 22 Initial settings ................................ 22 VFO description ............................ 23 Frequency setting with the tuning dial ..................................... 24 Direct frequency entry with the keypad .................................... 24 Advanced tuning functions ........... 25 5 RECEIVE AND TRANSMIT .. 26 – 49 Mode selection ............................. 26 Twin PBT operation ...................... 26 Notch function .............................. 27 Noise reduction ............................ 27 Noise blanker ............................... 27 RTTY filter/Twin peak filter ........... 28 CW reverse mode ......................... 28 RTTY reverse mode ..................... 28 CW pitch control ........................... 29 IF filter selection ........................... 29 AGC function ................................ 30 Dualwatch operation ..................... 31 Split frequency operation .............. 32 Quick split function ....................... 33 RIT and ∂TX ................................ 34 Monitor function ............................ 35 VOX function ................................. 35 Meter function ............................... 36 SWR reading ...…

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CIRCUIT DESCRIPTION 1 RECEIVER CIRCUITS 1-1 RF SWITCHING CIRCUIT (CTRL AND RF UNIT) The RF switching circuit leads receive signals to band-pass filters from an antenna connector while receiving. However, the circuit leads the signal from the RF power amplifier to the antenna connector while transmitting. RF signals from [ANT 1] or [ANT 2] pass through the antenna selector (RL3), transmit/receive switching relays (RLI,RL2, RL4), and low-pass filter (L27, L28, C63- C66, COOS), and are then applied to the RF unit via J2. The signals from the CTRL unit either bypass or are applied to the 6 dB (RF unit, RL121, R152) and/or 12 dB (RF unit, RL122, R154) attenuators via the antenna selector. By selecting the attenuators, 0 (bypass), 6, 12 and 18 dB attenuations are obtained. The signals are then applied to the RF filters. When the [RX ANT] is selected, the RF signals are passed through the low-pass filter (RF unit, L181) L182, C183-C187), then applied to the antenna selector (RF unit,RL101). 1-2 RF BANDPASS FILTER CIRCUIT (RF UNIT) RF band-pass filters pass only the desired band signals and suppress any undesired band signals. The RF circuit has 11 band-pass filters and 1 low-pass filter. (1) 0.03-1.6 MHz The signals pass through the attenuator (R181, R182, R183), low-pass filter (L181-L183, C181-C185, and are then applied to the RF amplifiers (Q501,Q601). (2) 1.6-60 MHz The signals pass through the high-pass filter (L171-L174, C171-C174) to suppress excessively strong signals below 1.6 MHz. The filtered signals are applied to one of 11 band-pass filters as below, and then applied to or bypass the pre-amplifier circuit. 1-3 PRE-AMPLIFIER CIRCUITS (RF UNIT) The IC-756 has 2 gain levels of pre-amplifier circuits. One has 10 dB gain over a wide band frequency range and the other one has 16 dB gain for the 21-28 MHz bands. When the [PREAMP] switch is set to [PREI] or [PRE2], the signals are applied to the pre-amplifier 1 (Q441, Q442) or pre-amplifier 2 (lC451) circuit, respectively. Pre- amplified or bypassed signals are applied to the RF amplifier circuits. 1-4 RF AMPLIFIER AND 1st MIXER CIRCUITS (RF UNIT) The 1st mixer circuit mixes the receive signals with the 1 st Lo signal to convert the receive signal frequencies to a 69 MHz 1st IF signal. The IC-756 has two 1st mixer circuits for the dual-watch function. The signals from the pre-amplifier circuit, or signals which bypass the pre-amplifiers, are divided at L501. Each signal is applied to a 30 MHz cut-out low-pass filter, RF amplifier (Q501, Q601) and then to a 1st mixer (Q611/Q612-Q614 or Q511/Q512-Q514). Each 1st LO signal (69.0415-129.0115MHz) enters the RF unit from the PLL unit via J101 or J201. The Lo signals are amplified at the Lo amplifier (Q561 or Q661), filtered by a low-pass filter, and then applied to each 1st mixer. 1-5 1st IF CIRCUIT (RF UNIT) The 1st IF circuit filters and amplifies the 1st IF signal. The 1st IF signal combined at L201 is applied to an MCF (Monolithic Crystal Filter; FII8la) to suppress out-of-band signals. The converted 1st IF signal level is adjusted at PIN attenuators (D532,D535, D531 or D632,D635, D631) controlled by the [BAL] controller for the dual-watch function. The signal is applied to the 1st IF amplifier (Q551 or Q651) and then combined at L653. The combined signal passes through the MCF (FI711a) and is amplified at Q721. The amplified signal is filtered at the other MCF (FI711b) and then applied to the 2nd mixer circuit. 1-6 2nd MIXER CIRCUS (RF UNIT) The 2nd mixer circuit mixes the filtered 1st IF signal and 2nd Lo signal (60.00 MHz) for conversion to the 2nd IF. The 1st IF signal from the MCF (FI711b) is converted into a 9 MHz 2nd IF signal at the 2nd mixer circuit . The 2nd IF signal is applied to the MCF (MAIN unit, FI132) to suppress undesired signals such as the 2nd LO signal, and then applied to the noise blanker gate. 1-7 NOISE BLANKER CIRCUIT (MAIN UNIT) The noise blanker circuit detects pulse-type noise, and turns OFF the signal line when the noise appears. The 2nd IF signal from the MCF (FI132) is applied to the noise blanker gate (D112). A portion of the signal from FI132 is amplified at the noise amplifiers (Q271-Q273), then detected at the noise detector (D271) to convert the noise components to DC voltages. The signal is then applied to the noise blanker switch (Q276,Q278). At the moment the detected voltage exceeds Q276's threshold level, Q278 outputs a blanking signal to close the noise blanker gate (D112). The T8V and PLL unlock signal are also applied to Q278, to control the noise blanker gate. Some DC voltage from the noise detector circuit is fed back to the noise amplifier (Q271,Q272) via the DC amplifiers (Q273, Q275). The DC amplifiers function as an AGC circuit to reduce average noise. Therefore, the noise blanker function shuts off pulse- type noise only. 1-8 2nd IF CIRCUS (MAIN UNIT) The 2nd IF circuit amplifies and filters the 2nd IF signal. The 2nd IF signal from the noise blanker gate (D112) is amplified at the IF amplifier (Q271-Q273) and applied to a 2nd IF filter which is selected in the filter selection mode. The filtered signal is amplified at the buffer-amplifier (Q274), then applied to the 3rd mixer circuit. 1-9 3rd MIXER AND 3rd IF CIRCUITS (MAIN UNIT) The 3rd mixer circuit mixes the 2nd IF signal and the 3 rd LO signal to obtain the 3rd IF (455 kHz) signal. The 2nd IF signal from the buffer-amplifier (Q274) is applied to the 3rd mixer circuit (IC151). The 3rd LO signal from the PLL unit is applied to the 3rd mixer (lC151). The mixed signal is output from pin 3, then applied to one of the 3rd IF filters. The filtered signal is amplified at the IF amplifier (IC201b), then applied to the AM demodulated, the 4th mixer circuit or the FM demodulated circuit after being amplified at the other IF amplifier (IC-201b). 1-10 DSP RECEIVER CIRCUIT (DSP BOARD) The DSP (Digital Signal Processors board enables digital noise reduction, digital PSN (Phase Shift Network) demode-la…

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CIRCUIT DESCRIPTION 1 RECEIVER CIRCUITS 1-1 RF SWITCHING CIRCUIT (CTRL AND RF UNIT) The RF switching circuit leads receive signals to band-pass filters from an antenna connector while receiving. However, the circuit leads the signal from the RF power amplifier to the antenna connector while transmitting. RF signals from [ANT 1] or [ANT 2] pass through the antenna selector (RL3), transmit/receive switching relays (RLI,RL2, RL4), and low-pass filter (L27, L28, C63- C66, COOS), and are then applied to the RF unit via J2. The signals from the CTRL unit either bypass or are applied to the 6 dB (RF unit, RL121, R152) and/or 12 dB (RF unit, RL122, R154) attenuators via the antenna selector. By selecting the attenuators, 0 (bypass), 6, 12 and 18 dB attenuations are obtained. The signals are then applied to the RF filters. When the [RX ANT] is selected, the RF signals are passed through the low-pass filter (RF unit, L181) L182, C183-C187), then applied to the antenna selector (RF unit,RL101). 1-2 RF BANDPASS FILTER CIRCUIT (RF UNIT) RF band-pass filters pass only the desired band signals and suppress any undesired band signals. The RF circuit has 11 band-pass filters and 1 low-pass filter. (1) 0.03-1.6 MHz The signals pass through the attenuator (R181, R182, R183), low-pass filter (L181-L183, C181-C185, and are then applied to the RF amplifiers (Q501,Q601). (2) 1.6-60 MHz The signals pass through the high-pass filter (L171-L174, C171-C174) to suppress excessively strong signals below 1.6 MHz. The filtered signals are applied to one of 11 band-pass filters as below, and then applied to or bypass the pre-amplifier circuit. 1-3 PRE-AMPLIFIER CIRCUITS (RF UNIT) The IC-756 has 2 gain levels of pre-amplifier circuits. One has 10 dB gain over a wide band frequency range and the other one has 16 dB gain for the 21-28 MHz bands. When the [PREAMP] switch is set to [PREI] or [PRE2], the signals are applied to the pre-amplifier 1 (Q441, Q442) or pre-amplifier 2 (lC451) circuit, respectively. Pre- amplified or bypassed signals are applied to the RF amplifier circuits. 1-4 RF AMPLIFIER AND 1st MIXER CIRCUITS (RF UNIT) The 1st mixer circuit mixes the receive signals with the 1 st Lo signal to convert the receive signal frequencies to a 69 MHz 1st IF signal. The IC-756 has two 1st mixer circuits for the dual-watch function. The signals from the pre-amplifier circuit, or signals which bypass the pre-amplifiers, are divided at L501. Each signal is applied to a 30 MHz cut-out low-pass filter, RF amplifier (Q501, Q601) and then to a 1st mixer (Q611/Q612-Q614 or Q511/Q512-Q514). Each 1st LO signal (69.0415-129.0115MHz) enters the RF unit from the PLL unit via J101 or J201. The Lo signals are amplified at the Lo amplifier (Q561 or Q661), filtered by a low-pass filter, and then applied to each 1st mixer. 1-5 1st IF CIRCUIT (RF UNIT) The 1st IF circuit filters and amplifies the 1st IF signal. The 1st IF signal combined at L201 is applied to an MCF (Monolithic Crystal Filter; FII8la) to suppress out-of-band signals. The converted 1st IF signal level is adjusted at PIN attenuators (D532,D535, D531 or D632,D635, D631) controlled by the [BAL] controller for the dual-watch function. The signal is applied to the 1st IF amplifier (Q551 or Q651) and then combined at L653. The combined signal passes through the MCF (FI711a) and is amplified at Q721. The amplified signal is filtered at the other MCF (FI711b) and then applied to the 2nd mixer circuit. 1-6 2nd MIXER CIRCUS (RF UNIT) The 2nd mixer circuit mixes the filtered 1st IF signal and 2nd Lo signal (60.00 MHz) for conversion to the 2nd IF. The 1st IF signal from the MCF (FI711b) is converted into a 9 MHz 2nd IF signal at the 2nd mixer circuit . The 2nd IF signal is applied to the MCF (MAIN unit, FI132) to suppress undesired signals such as the 2nd LO signal, and then applied to the noise blanker gate. 1-7 NOISE BLANKER CIRCUIT (MAIN UNIT) The noise blanker circuit detects pulse-type noise, and turns OFF the signal line when the noise appears. The 2nd IF signal from the MCF (FI132) is applied to the noise blanker gate (D112). A portion of the signal from FI132 is amplified at the noise amplifiers (Q271-Q273), then detected at the noise detector (D271) to convert the noise components to DC voltages. The signal is then applied to the noise blanker switch (Q276,Q278). At the moment the detected voltage exceeds Q276's threshold level, Q278 outputs a blanking signal to close the noise blanker gate (D112). The T8V and PLL unlock signal are also applied to Q278, to control the noise blanker gate. Some DC voltage from the noise detector circuit is fed back to the noise amplifier (Q271,Q272) via the DC amplifiers (Q273, Q275). The DC amplifiers function as an AGC circuit to reduce average noise. Therefore, the noise blanker function shuts off pulse- type noise only. 1-8 2nd IF CIRCUS (MAIN UNIT) The 2nd IF circuit amplifies and filters the 2nd IF signal. The 2nd IF signal from the noise blanker gate (D112) is amplified at the IF amplifier (Q271-Q273) and applied to a 2nd IF filter which is selected in the filter selection mode. The filtered signal is amplified at the buffer-amplifier (Q274), then applied to the 3rd mixer circuit. 1-9 3rd MIXER AND 3rd IF CIRCUITS (MAIN UNIT) The 3rd mixer circuit mixes the 2nd IF signal and the 3 rd LO signal to obtain the 3rd IF (455 kHz) signal. The 2nd IF signal from the buffer-amplifier (Q274) is applied to the 3rd mixer circuit (IC151). The 3rd LO signal from the PLL unit is applied to the 3rd mixer (lC151). The mixed signal is output from pin 3, then applied to one of the 3rd IF filters. The filtered signal is amplified at the IF amplifier (IC201b), then applied to the AM demodulated, the 4th mixer circuit or the FM demodulated circuit after being amplified at the other IF amplifier (IC-201b). 1-10 DSP RECEIVER CIRCUIT (DSP BOARD) The DSP (Digital Signal Processors board enables digital noise reduction, digital PSN (Phase Shift Network) demode-la…

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IC-756PRO Alignment Procedure PLL Board Reference Oscillator - Connect Frequency counter to P81 on the PLL board - Adjust L53 and R33 for 64.000000MHz - Connect RF volt meter to P81 on the PLL board - Adjust L81 and L82 for maximum level - LPL A - Set display to 0.0300000MHz, LSB - Connect multi-meter to check point LPA - Adjust C154 for 2.0V VCO A - Connect multi-meter to check point LVA - Set display to 7.999999MHz, USB - Adjust C278 for 4.3V - Set display to 19.999999MHz, USB - Adjust C258 for 4.3V - Set display to 44.999999MHz, USB - Adjust C228 for 4.3V - Set display to 60.000000MHz, USB - Adjust C208 for 4.3V 1LOA - Connect RF volt meter to P351 - Set display to 0.030000MHz - Verify RF output level for 0dBm or higher - Set display to 7.999999MHz - Verify RF output level for 0dBm or higher - Set display to 8.000000MHz - Verify RF output level for 0dBm or higher - Set display to 19.999999MHz - Verify RF output level for 0dBm or higher - Set display to 20.000000MHz - Verify RF output level for 0dBm or higher - Set display to 44.999999MHz - Verify RF output level for 0dBm or higher - Set display to 45.000000MHz - Verify RF output level for 0dBm or higher - Set display to 60.000000MHz - Verify RF output level for 0dBm or higher LPL B - Connect multi-meter to check point LPB - Set display to 0.0300000MHz, USB - Adjust C454 for 2.0V VCO A - Connect multi-meter to check point LVB - Set display to 7.999999MHz, USB - Adjust C578 for 4.3V - Set display to 19.999999MHz, USB - Adjust C558 for 4.3V - Set display to 44.999999MHz, USB - Adjust C528 for 4.3V - Set display to 60.000000MHz, USB - Adjust C508 for 4.3V 1LOA - Connect RF volt meter to P651 - Set display to 0.030000MHz - Verify RF output level for 0dBm or higher - Set display to 7.999999MHz - Verify RF output level for 0dBm or higher - Set display to 8.000000MHz - Verify RF output level for 0dBm or higher - Set display to 19.999999MHz - Verify RF output level for 0dBm or higher - Set display to 20.000000MHz - Verify RF output level for 0dBm or higher - Set display to 44.999999MHz - Verify RF output level for 0dBm or higher - Set display to 45.000000MHz - Verify RF output level for 0dBm or higher - Set display to 60.000000MHz - Verify RF output level for 0dBm or higher 3LO - Connect RF volt meter to P701 - Verify RF output level for –16dBm or higher S3LO - Connect RF volt meter to P801 - Verify RF output level for –7dBm or higher S2LO - Connect RF volt meter to P901 - Verify RF output level for 0dBm or higher Marker - Connect oscilloscope to P851 - Verify output signals for 4Vpp or higher PA Board Driver idling current - Set the mode to CW - Open W29 leads, and connect current meter - Transmit - Adjust R11 for 100mA - Close W29 Final idling current - Set the mode to CW - Open L8 side of R28 leads, and connect current meter - Transmit - Adjust R18 for 500mA - Close R28 FAN - Install multi-meter between J11-1 and ground - Transmit - Verify the voltage between 6V and 8V - Receive - Jumper between CP1 and CP2 - Verify the voltage for 12V Main Board Initial setup for alignment - Reset the microprocessor (Hold “F-INP” and “M-CL” buttons and turning radio on) - Setup the radio as below - Frequency:14.100000MHz - Filter:2.4KHz - Mode:USB - Pre-amp:P.AMP1 - Antenna:ANT1 - Meter:Po meter - Attenuater:OFF - AGC:MID - VOX:OFF - Tuner:OFF - Monitor:OFF - Noise Blanker:OFF - NR SW:OFF - RF/SQL:Center - Balance:Center - NR Level:CCW - MIC Gain:Center - RF Power:CW - COMP Level:Center - KEY Speed:Center - BK-IN Delay:Center - Notch:OFF - NotchCenter - CW Pitch:Center - RIT:OFF - Delta TX:OFF Transmitter - Connect RF power meter to ANT connector - Connect AF signal generator to mic connector - Apply 1.5KHz/1mV signals to mic connector - Transmit - Adjust MIC GAIN pot on the front panel for 50W - Adjust L261 for maximum RF output power Transmit Total Gain - Connect RF power meter to ANT connector - Connect AF signal generator to mic connector - Apply 1.5KHz/1mV signals to mic connector - Set MIC GAIN pot on the front panel to center - Adjust R263 for 50W IC APC - Connect RF power meter to ANT connector - Set radio to 3.550000MHz, RTTY - Ground CP501 - Transmit - Adjust R545 for 23A HF RF Power - Connect RF power meter to ANT connector - Set radio to 14.100000MHz, RTTY - Transmit - Adjust R507 for 105W 50MHz RF Power - Connect RF power meter to ANT connector - Set radio to 50.000000MHz, RTTY - Transmit - Adjust R509 for 100W FM transmit modulation - Set Radio to follows - Frequency:29.60000MHz - Mode:FM - Filter:15KHz - RF POWER:Maximum - Mic Gain:Center - Connect Modulation analyzer to ANT connector - Connect AF signal generator to mic connector - Apply 1KHz/10mV signals to mic connector - Transmit - Adjust R2227 on DSP board for 4.5KHz - Apply 1KHz/1mV signals to mic connector - Verify transmit modulation for 3.5KHz AM Carrier Power - Set radio to 14.100000MHz AM - Set RF POWER pot to maximum - Connect RF Power meter to Antenna connector - Connect AF signal generator mic connector - Apply no signals to mic connector - Transmit - Adjust R510 for 40W - Apply 1KHz/10mV signals to mic connector - Adjust R2229 on DSP board for 90% Speech processor - Set R392 to Center RX Receiver - Set radio to follows - Frequency:14.1015MHz - Mode:USB - Shift:0 - Filter2.4KHz - Connect RF signal generator to ANT connector - Connect SINARDER to external SP Jack - Receive - Adjust L111, L112 and L113 for maximum level RX Total Gain - Set radio to follows - Frequency:14.1015MHz - P AMP:OFF - Mode:USB - Shift:0 - Filter2.4KHz - Connect RF signal generator to ANT connector - Connect SINARDER to external SP Jack - Apply 14.1015MHz/54dBu signals to ANT connector - Apply no signals to ANT connector - Adjust R210 for 30dB between with signals and without signals Noise Blanker - Set radio to follows - Frequency:14.1015MHz - P AMP:OFF - NB:OFF - Mode:USB - Shift:0 - Filter2.4KHz - Set R271 to center - Connect noise generator to ANT connector - Connect oscilloscope to CP271 - Apply noise…

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