QYNDX-2HF Amature

OPERATING MANUAL EMTRON DX-2 HF LINEAR AMPLIFIER Emtron North America Distributed Exclusively in North America By: Emtron North America 6531 Boundary Run Drive DX-2, Serial No............ INITIAL SETTINGS FOR PLATE AND LOAD CAPACITORS TEST FREQUENCY BAND FACTORY SETTINGS 50 OHM LOAD USER SETTING ANTENNA PLATE LOAD PLATE LOAD 21.200 MHz 15m 18.100 MHz 17m 14.200 MHz 20m 7.070 MHz 40m 3.600 MHz 80m 1.800MHz 160m 1.850 MHz 160m 1.900 MHz 160m TABLE 1 TABLE OF CONTENTS 1 GENERAL DESCRIPTION ................................................................................................................................. 1 1.1 DX-2 – INTERNAL VIEW............................................................................................................................. 2 2 TECHNICAL SPECIFICATIONS ...................................................................................................................... 3 3 UNPACKING......................................................................................................................................................... 3 3.1 OPENING THE CARTON................................................................................................................................4 3.2 OPENING THE DX-2 COVER........................................................................................................................ 4 4 INSTALLATION I ENVIRONMENT................................................................................................................. 4 4.1 REQUIRED ENVIRONMENT.......................................................................................................................... 4 4.2 POWER REQUIREMENTS.............................................................................................................................. 4 5 REAR PANEL ....................................................................................................................................................... 4 5.1 POWER / EARTH CONNECTIONS................................................................................................................... 4 5.2 RF CONNECTIONS....................................................................................................................................... 4 5.3 TRANSCEIVER CONTROL............................................................................................................................. 4 6 FRONT PANEL..................................................................................................................................................... 5 6.1 CONTROLS.................................................................................................................................................. 5 6.2 DISPLAYS................................................................................................................................................... 5 7 ELECTRICAL CONNECTIONS ........................................................................................................................ 6 7.1 CONNECTIONS TO TRANSCEIVER / EXCITER............................................................................................... 6 7.2 EARTH AND MAINS CONNECTIONS.............................................................................................................. 6 7.3 TERMINATING THE POWER CABLE (EXPORT VERSION) ................................................................................ 7 7.4 OPERATION AT 230V, 220V AND 200V (EXPORT VERSION)........................................................................ 7 8 DX-2 DESCRIPTION............................................................................................................................................ 7 8.1 RF SECTION................................................................................................................................................ 7 8.2 MAINS TRANSFORMER................................................................................................................................8 8.3 H. V. POWER SUPPLY................................................................................................................................. 8 8.4 SOFT START MODULE.................................................................................................................................. 8 8.5 SENSOR MODULE........................................................................................................................................ 8 8.6 ANTENNA RELAY / QSK MODULE............................................................................................................... 8 8.7 DISPLAY BOARD......................................................................................................................................... 8 8.8 CONTROLLER BOARD.................................................................................................................................. 8 9 POWERING UP .................................................................................................................................................... 9 10 OPERATION ......................................................................................................................................................... 9 10.1 TUNNING PROCEDURE - ...................................................................................................................... 9 10.1.1 General........................................................................................................................................................ 9 10.1.2 Preliminary tuning ...................................................................................................................................... 9 10.1.3 Final tuning...............................................................................................................................................…

Text truncated - open the document above for the full version.

TECHNICAL DESCRIPTION General DX-2 is an external linear amplifier for use in the amateur radio service. Type of emission: CW, RTTY, SSB, AM, SSTV and other digital modes. Frequency range The Emtron DX-2 amplifier covers seven amateur bands: 160m, 80m, 40m, 20m, 17m, 15m. NOTE: There is a 9-band version of DX-2, including the 30m,12m and 10m band. In this case (Non - US version), the entire 6 -band RF tank and switch module is replaced with a 9-band module. The variable capacitors are also different. Range of operating power There is no power adjustment in DX-2. The output power can be adjusted from virtually zero to the maximum, by adjusting the input drive level at the transceiver or exciter. As the output power is directly proportional with the drive power, no other power control is available. However, DX-2 contains circuitry that prevents over-driving the amplifier, and eliminates "flat-topped" signals and frequency splatter. Maximum power level The nominal maximum output power of the DX-2 amplifier is 1500W. Due to the normal tolerances in the tube, the "Key down" power can range between about 1400 to 1600 W. The plate voltage in a DX-2 is not regulated and can vary from 2450 V at no load, to about 2150 V at full power. The DC voltage and DC currents There is only one tube in the amplifier, the tetrode GU84B. The typical plate voltage at full power is 2100 and the typical current is 1.3 A. Function of the tube The tetrode GU84B used in the DX-2 amplifier is operating as cathode grounded, grid driven class AB1 amplifier. The grid circuit is not tuned. The plate circuit is tuned. The load coupling is via a Pi-L tuned and switched circuit. Both the input and output impedance are nominally 50 ohm.

DX-2 QSK - PARTS LIST PARTRATINGQTY 1 RELAY- JENINGS RJ1A-26S1 2 RELAY - MATSUSHITA NR-HD16V1 3 DIODE1N40075 4 RESISTOR8.2K1 5 RESISTOR1K1 6 PCB1 7 LUG2

High Voltage Supply 1000pF1000pF 6A100 AC1 1000pF1000pF AC2 1000pF1000pF 75k 6A100 75k 1000pF 6A100 6A100 1000pF 6A100 + 470uF/450V 75k 25R IP 1000pF 6A100 1000pF 6A100 1000pF1000pF 6A100 330k 330k 330k 6A100 1000pF 6A100 75k + 470uF/450V 6A100 6A100 75k 6A100 + 470uF/450V 6A100 + 470uF/450V 6A100 75k 75k 6A100 6A100 330k 1000pF1000pF 6A100 6A100 + 470uF/450V 330k 1000pF 330k 75k 1000pF + 470uF/450V + 470uF/450V 1000pF 6A100 HVVP 1000pF + 470uF/450V 1000pF AC INPUT & SOFT START WIRING MT2 EARTH 1 MT2 Yellow Blue SW Brown MT1 240V FEMALE 123 BTA40-600B S2ON / OFF 25A G 4.7nF/250Vac/Y 2 25A Front Panel 120V Brown S1 COVER INTERLOCK Brown MT2 Blue MT1 200V Yellow Yellow/Green 4.7nF/250Vac/Y 2 NEUTRAL 1 To LOOM (+12V) Blue Sof tStartWiring US 1 SOFT START W IRING U.S. Ve rsion A4 11 Monday , January 07, 2002 Tit leSize Document Number Re v Date: Sheet of 220V ACTIVE 1 TRANSFORMER (On Chassis) Soft Start Module MALE 123 230V G Blue Brown Blue 0V MT1 A G E M T R O N Brown Brown Blue K1 RELAY DPST FAN 1234 Red TRIAC Bottom View RF MODULE R10100 COAX PLATE CHOKE L1 R.F. OUT MODULE (White)C622nF RV3140VRV1140V R310 D6A106 RV6275V D5A106 D7 A106 9-Way 123456789 C3 1000pF/6kV C8 1500p SM C4 1000pF/6kV CV1500pF C13 2.2nF R9100 D21N4148 RS1 100 RV5 140V D4A106 PLATE VOLTAGE (BLUE) C9 2.2nF C142200pF EBS (Brown) C1222nF V1 GU84B C5 2.2nF F.O. PROTECTION BOARD C72.2nF D1 1N4148 R23k COAX CV21100pF C10 22nF C112.2nF R11100 D9 A106 D8 A106 R175k RV2140V C2 1000pF/6kV RV4 140V D3A106 C1 1000pF/6kV C666pF R750/100W R42.2k (Simplified Diagram) Lp DISPLY BOARD L63R L16Y VR250k VR15k L76R C112. 2nF L56Y L52Y R122k2 L38G C61nF R31k2 R8100 L55G R21k2 R72k2 L19R L33G X3 - 8Ig2- 1 U5 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 LED10 L44G L22G L18R X3 - 9Ig 2+ 1 L31G L41G L13Y R9560 U7 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 LE D10 U6 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LE D1 LE D2 LE D3 LE D4 LE D5 LE D6 LE D7 LE D8 LE D9 LED10 L58Y R41k2 L28G L70R L9Y L73G X3 - 1 0OD/T X 1 L48Y L79G L59Y L5Y L43G X3 - 1 1 L12Y U3 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LE D1 LE D2 LE D3 LE D4 LE D5 LE D6 LE D7 LE D8 LE D9 LE D10 L23G VR55k L39G L64R L11Y L77R L35G L50R L6Y L7Y L78R C121nF L46Y L61Y VR65k X3 - 1 1 1 X3 - 7TX 1 L75R +5V C81nF F O RWAR D PO W ER R61k2 L53Y L27G U9 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LE D1 LE D2 LE D3 LE D4 LE D5 LE D6 LE D7 LE D8 LE D9 LED10 L74G L10Y X3 - 1 6O/D 1 U10 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LE D1 LE D2 LE D3 LE D4 LE D5 LE D6 LE D7 LE D8 LE D9 LED10 L21G X3 - 1 3RE F LEC T E D PO W ER 1 E M T R O N X3 - 4 1 L67R R14100 L8Y L72G L62R R15560 R11 U2 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LE D1 LE D2 LE D3 LE D4 LE D5 LE D6 LE D7 LE D8 LE D9 LE D10 L17R L37G U4 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 LED10 X3 - 1 5SWR 1 X3 - 3FAULT 1 L14Y L71G L54G L15Y L47Y C72. 2nF X3 - 6SWR/ FLT 1 L30G L57Y C151nF L29G L51Y L34G L42G L26G VOLT X3 - 5RE ADY 1 U8 LM3914 5 9 4 6 8 3 2 7 10 11 12 13 14 15 16 17 18 1 SI G I N MODE RLO RHI REF A DJ V+ V- REF O UT LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 LE D10 C51nF L25G L2Y C92. nF + C347uF L4Y X3 - 2 AMP 1 L18R L45Y L60Y L3Y L81R L1Y L40G L65R X3 - 1 2 1 R11k2 C142. 2nF + C1 100uF R132k2 VR45k L49R VR35k X3 - 1 4 1 L69R L36G D14V3 L32G L20R C102. 2nF L66R C41nF L24G DISPLAY PANEL A3 11 Monday, Januar y 07, 2002 DP- 1 V. 3 TitleSize Document Number Date: Sheet of R52k2 + C247uF SOFT START 240V VERSION P C62.2nF MT1 R1100/2W R6270k D1 1N4007 GATE R4150/2W LOAD C10100nF C9100nF U1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CS VS CL AS SS RC RGT GND VCC SR PC DSS TPA SCAP SSC LS + C5 220uF/25V SWITCH MT2 R8 470k/2W C32.2nF NOTE: 200V to 240V operation R10100k D21N4007 + C4220uF/25V For 110VAC, replace C1 by 3.9k or 4.3k / 6Wresistor R7470k/2W R910k E M T R O N C1 470nF/250Vac/X2 C112.2nF R1100/2W L O C12100nF C2 220nF/250Vac/X2 + C83.3uF NEUTRA L C747nF C134.7nF/250 V SWITCH R256R/2W R3220/2W R256R/2W SOFTSTART240VSOFT START A4 1 1 Monday , January 07, 2002 Tit leSize Document Number Date: Sheet of C144.7nF/250Vac/Y 2 QSK RF DECK OUT + D51N4004 D11N4004 RF DECK IN D4 1N4148 50 Rin D2 1N4004 - AMP RF OUT(TO RF SENSOR) D31N4148 QSK2DX2 2 QSKv2 DX-2 A4 11 Monday , January 07, 2002 Tit leSize Document Number Rev Date: Sheet of E M T R O N JP1 12 R21k RF IN (SO239) R1680 RL2 Jenings TJ1A-26S + C120uF RL1 NR-HD-16V CONTROL BOARD BR3 LBA291 56R R18A C22 10uF C21 10nF X2. U10 PC521 1N4148 D27 1N4148 D28 X8. BC557 Q8 56RR18 4K7 R16 2k2 R17 MPSA92 Q23 X7. 22 R7 1K R6 BC547 Q3 MJE16002 Q2 220K R5 220K R4 2K2 R14 100k R15 D1 62V ZTX558 Q4 10nF C19 240R R10 X5. C1 150uF/400V C2 150uF/400V C1 NC1NO1 NO2 NC2 C2 V2 V1 RL2 M4-12H 160K R78 220K R2 220K R1 BR1 WO6 X7. X7. R13 6K8 R12 6k8 4.7nF C4 U8 PC521 BZX79C24V D26 1K R26 - + OUT LM358 (4=GND, 8=12V) U1 D10 5V6 39K R33 1K R30 1K R28 4K7 R27 100nF C3 BC557 Q18 330K R31 330K R32 8k2 R29 X8.X7. X1. 12K R34 TIPL760A Q5 X1.X1. 330k R36 U6 PC521 C20 10uF/450V BC557 Q9 100nF C11 5K POT4 2K2 R47 R67 100k X1. 10uF/25V C17 IN OUT COM U13 7805 X1. MPSA92 Q7 2K2 R40 8k2 R48 33K R39 1M R75 X3. POT1 500R 15K R37 BZX79C5V6 D11 R35 12K 25uF/160V C9 BR2 WO6 X2. X2. 1N4148 D12 33k R41 D14 12V X4. 1uF C10 X4. X4. D13 4V3 - + OUT LM358 (4=-12V, 8=12V) U2 - + OUT U2 (4=-12V, 8=12V) 8K2 R45 22K R43 100k R44 X4. X4. X6. 18K R46 POT5 R49 8k2 R51 8k2 R52 POT2 5K - + OUT U1 LM358 (4=GND, 8=12V) 1N4148 D17 D16 12V C14 10uF X1. R53 300k VC GND CLK OUT R TH…

Text truncated - open the document above for the full version.

TEST REPORT LINEAR POWER AMPLIFIER EMTRON DX-2 MANUFACTURER: Emona Electronics MODEL: DX-2 UNIT TESTED: Serial Number 10340 TEST PERFOMED BY: Vincent Cammarata, Ph.D. Rudolf Breznik, Dan Voican DATE: December 2002 – January 2003 A. Equipment used 1. Spectrum Analyser LG Model SA-9270A 2. Spectrum Analyser Model HP141T + HP8552B + HP 8553B 3. RF Power Meter Coaxial Dynamics Model 83000-A 4. RF Power Meter EINS Model PHP-101 5. RF Power Meter EINS Model PHP-101 6. Dummy Load with 30dB built-in attenuator 7. Attenuator GW Model GAT-669 8. Attenuator Lark Engineering Co. Inc. Model FSC 33174 9. Transceiver Kenwood Model TS-680S 10. Transceiver JRC Model JST-100 11. Transceiver ICOM Model IC706 12. Two-Tone Generator (built in–house) 13. Audio Generator GW Model GAG-808G 14. Audio Generator GW Model GAG-809/810 15. Oscilloscope Tektronix Model TDS 220 B. Test Results 1. Maximum RF output, Maximum Input power, Maximum Gain BAND: 160m 80m 40m 20m 17m 15m Input Drive [W] 57 53 52 50 52 49 Output Power [W] 1500 1500 1500 1500 1500 1550 Gain 26.3 28.3 28.8 30 28.8 33.7 Gain [dB] 14.2 14.5 14.6 14.8 14.6 15.0 Summary: Maximum RF output: 1500 – 1550 W, depending on the band Minimum input drive for 1500 W output: 50 – 58 W, depending on the band Maximum gain: 14.1 – 14.8 dB (<15dB) On 15m the gain is 15.0 dB, but the input drive is 1 W under the 50 W limit. 2. Operation between 26 MHz – 35 MHz Conditions of measurement: 17m band, “PLATE” and “LOAD” capacitors completely open Input: 50 W 24 MHz operation: Input 50 W, Output 47 W (Gain <0 dB) 26 MHz operation: Input 50 W, Output 46 W (Gain <0 dB) 27 MHz operation: Input 50 W, Output 46 W (Gain <0 dB) 28 MHz operation: Input 50 W, Output 47 W (Gain <0 dB) 30 MHz operation: Input 50 W, Output 43 W (Gain <0 dB) 3. Spurious emissions: Inter-Modulation Distortion (IMD) The IMD at the output of the transceiver only (the linear amplifier bypassed) was 28 – 33 dB below the carrier, depending on which transceiver was used. Adding the linear amplifier, no degradation in the IMD readings was noticed at output powers of 1500 W. However, we could not measure the IMD introduced by the amplifier only, due to the lack of performance of the rest of the equipment used (transceivers, audio generators). 4. Spurious emissions: Harmonics NOTE: See Spectrum Analyser screen pictures, next pages. HARMONICS: relative and absolute levels BAND 160m 80m 40m 30m 20m 17m 15m fo [MHz] 1.853.67.07 14.2 18.121.2 A0 [dBm] -2.82-2.94-2.80 -2.74 -2.65-2.93 ∆A1 [dB] -52.11-47.28-58.44 -55.50 -59.53-45.56 ∆A2 [dB] -54.47 -56.34 ∆A3 [dB] -57.23 NOTE: Values ∆A1 to ∆A4 are readings below the carrier A0 level A1 [mW] 9.2282.1 4.2 1.742 A2 [mW] 5.3 3.5 A3 [mW] 2.8