Related Manuals for AMERITRON ALS-600
Summary of Contents for AMERITRON ALS-600
- Page 1 AMERITRON ALS-600/S 600 WATT NO TUNE TMOS-FET AMPLIFIER INSTRUCTION MANUAL AMERITRON 116 WILLOW ROAD STARKVILLE, MS 39759 USA 662-323-8211 Revision 6a...
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Page 2: Table Of Contents
Table of Contents ALS-600 Specifications…………………… …………………………………………. 4 Optional Accessories…………………………… …………………………………. 5 ALS-600 Features......................6 Power Supply Features....................8 ALS-600PS......................8 ALS-600SPS......................8 ALS-600PS and ALS-600SPS................8 General Information......................9 Amplifier......................9 Power Supply.......................9 Export Modifications...................10 Amplifier Circuitry......................10 Wattmeter Circuits....................10 ALC (Automatic Level Control)................10 Thermal Overload....................11 Load Fault Indicator.....................12 SWR Considerations....................12... - Page 3 SSB Operation.....................20 CW Operation......................21 RTTY, FM and Other High Duty Cycle Operation..........21 AM Operation......................22 Drive Power Requirements..................22 ALS-600 Remote Control Operation and Automatic Band Tracking....24 ALS-500RC Remote Control Operation..............25 ARI-500 Automatic Transceiver Frequency Tracking........25 Periodic Maintenance...................25 Technical Assistance......................26 ALS-600 Parts Lists & Schematics..................27 Meter/ALC Board....................27...
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Page 4: Als-600 Specifications
50 VDC line. Operate/Standby Switch: Lets you run "barefoot", or instantly switch to full power. ALC Controls: Front Panel - exclusive Ameritron feature -- lets you adjust your amplifier output power. Rear Panel – sets ALC range to match your transceiver. -
Page 5: Optional Accessories
• MOD-10MB Modification Kit for 10/12 meters • QSK-5 High Power Pin Diode T/R Switch • ALS-500RC Remote Control Head for ALS-600 (Ser. No. 14378 and higher) • ARI-500 Automatic Band Switch for ALS-600 (Ser. No. 14378 and higher) - ARI-500 Interface Cables. Check with Ameritron for pre-made cables for... -
Page 6: Als-600 Features
Check with Ameritron for additional cables as they become available ALS-600 AMPLIFIER FEATURES Rugged devices. The ALS-600 uses four rugged MRF-150 RF power FETs All solid-state means instant warm-up. No-wait amplifier operation. No tune operation. No tuning is necessary. A simple one knob band selector switch permits operation on frequencies between 1.5 and 22 MHz (24-30 MHz with MOD-... - Page 7 Thermal Overload Protection. The transmit relay in the amplifier is disabled if excessive heatsink temperatures are reached. Compact size. The ALS-600 weighs only 12.5 pounds and measures 6"H x 9.5"W x 12"D. Remote Amplifier Operation. The ALS-600 amplifier can be tucked out of the way when used with the optional ALS-500RC Remote Control Head.
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Page 8: Power Supply Features
ALS-600 amplifier. It is 1/3 the weight of the ALS-600PS linear power supply. The ALS-600 amplifier with the ALS-600SPS switching power supply is ideal for travel. Hash free. The specially designed switching and filter circuit makes the power supply hash free. -
Page 9: General Information
FCC requirements. The MOD-10B kit provides operation up to 30 MHz (copy of a valid amateur license is required to purchase the MOD-10B). The ALS-600 uses four MRF-150 FET's operating at 50 volts in a double ended push- pull parallel output configuration. -
Page 10: Amplifier Circuitry
The ALC circuit functions by using a comparator (IC103A) to reduce the exciter drive power if the output power of the ALS-600 exceeds a preset value. The ALC circuit also reduces the drive power if the SWR increases while operating with the ALC controlling the amplifier output power level. -
Page 11: Thermal Overload
AM output power will cause pumping of carrier amplitude on AM transmissions during modulation. The ALC indicator on the front panel of the ALS-600 is driven by comparator IC3B. Resistors R24 and R25 set the turn-on level of the front panel "ALC" indicator. Factory selected resistor values cause the "ALC"... -
Page 12: Load Fault Indicator
ALS-600. When a fault occurs, the ARI-500 can be configured to automatically re-set the ALS-600 after approximately 5-seconds. If the ARI-500 is not configured for automatic amplifier fault re-set, you must cycle the amplifier power switch OFF and then ON to re-set the fault circuitry. -
Page 13: Power Supply Circuitry (Als-600Ps)
The TMOS FET devices used in the ALS-600 have nearly the same momentary overload tolerance as vacuum tubes. The low pass output network in the ALS-600 is much broader in bandwidth and less sensitive to load changes than the networks used in tube type amplifiers. -
Page 14: High Voltage Section
ALS-600PS Power Supply Board For the following line voltages Jumper Pad Diagram jumper the correct pads. AC LINE VOLTAGE RANGE PRIMARY BUCK BOOST 95-110 A TO B C TO D E TO 2 F TO 1 105-120 A TO B C TO D E TO F 115-130 A TO B C TO D... -
Page 15: Low Voltage Circuits
2 ampere fuse (F602) located on the power supply printed circuit board. A separate half wave rectifier supplies the low current necessary to operate the ALC circuitry in the ALS-600. This circuit is protected by a 10 ohm 1/4 watt resistor (R601). -
Page 16: Switching Power Supply Circuitry (Als-600Sps)
SWITCHING POWER SUPPLY CIRCUITRY (ALS-600SPS) Line Voltage The input AC line voltage for the ALS-600SPS can be changed by moving jumpers located at the front of the unit under the current and voltage meter. The ALS-600SPS is factory wired for 120 VAC operation unless otherwise indicated. Warning: Never unplug the power cable from the amplifier while the power supply is connected to the power line. -
Page 17: High Voltage Section
The low voltage power supply sections supply 14 volts positive at 2 amperes maximum for control of lights, bias voltage regulator and the Bias/Wattmeter board in the ALS-600. A separate 12 volts negative supply is used to operate inrush relay and the ALC circuit of the ALS-600. -
Page 18: Grounding
Power Requirements Caution: The ALS-600 is not designed for operation from a 12 VDC power source. The ALS-600PS/SPS power supplies are designed to match the ALS-600 amplifier. They provides 50 volts DC at 25 amperes along with 12 volts positive and negative at low current for the control and bias circuits of the amplifier. -
Page 19: Interconnections
INTERCONNECTIONS 1. Connect the RF (antenna) output of the exciter to the RF IN (SO-239) of the ALS-600 with a good quality 50 ohm cable capable of handling 100 watts. 2. Connect the station antenna system to the RF OUT (SO-239) connector with good quality 50 ohm coax that will safely carry 600 watts. -
Page 21: Operation
10 minutes key down with a 50% duty cycle. The ALS-600SPS switching power supply does not have this Normal/RTTY switch. Note: Ensure that you limit your ALS-600 output power to 350 watts maximum for RTTY or other continuous carrier modes. -
Page 22: Cw Operation
SWR all play important roles in determining the transmit time limit on high duty cycle modes. To minimize noise, Ameritron uses only enough fan speed to cool the ALS-600 for typical amateur usage. If heavy duty cycle operation is planned, the following guidelines should be followed. -
Page 23: Am Operation
The power supply high voltage output can be reduced to increase the efficiency at lower output levels. At 30 volts the ALS-600 will deliver 275 watts of output power. This allows a 100% duty cycle with any fan delivering more than 40 CFM at .08" of static pressure, or a 5 minute on, two minute off duty cycle with the standard fan. -
Page 24: Als-600 Remote Control Operation And Automatic Band Tracking
The ALS-600SPS should be between 49 to 51 volts at this step. 5. Set the ALS-600 frequency range switch to the same frequency as the exciter. 6. With the amplifier still in STANDBY, transmit into the expected 50 ohm RF load with the exciter. -
Page 25: Ari-500 Automatic Transceiver Frequency Tracking
Elecraft K3 transceiver, and other transceivers with compatible interfaces. The ARI-500 interfaces to the ALS-600 via the two RJ45 jacks on the front of the amplifier. Amplifier keying is provided through the low drive current interface of the ARI-500. -
Page 26: Technical Assistance
4. A complete description of the problem along with any abnormal meter readings. Written assistance is also available. Due to time delays in processing mail, please allow at least three weeks for a written reply. See warranty page for mailing address. AMERITRON 116 Willow Road Starkville, MS 39759... -
Page 27: Als-600 Parts Lists & Schematics
ALS-600 PARTS LISTS & SCHEMATICS Meter/ALC Board 50-0600-1 Designator Description Part number C101,102,104,105,109, 107,112-115,117-123 .01 uF 50V disc 200-0416 C103,106 2.2 uF 50V radial lead electrolytic 203-0225 C108,116 47 uF 50V tantalum 203-0530 C110,111 not used D101 not used D102-105,107... -
Page 29: Pa Board
PA Board 50-0600-2 Designator Description Part Number C201-203,217 not used C204-207,209-212 .1 uF 50V disc 200-0745 C208 470 pF 500V DM 15 208-5440 C213,214,220-226 .33 uF 100V multiplayer 205-1334 C215 47 uF 100V mylar 201-1474 C216 100 uF 100V radial lead electrolytic 203-1007 C218,219,232,233 360 pF 500V... -
Page 30: Output Filter Board
Output Filter Board 50-0600-3 Designator Description Part Number C301,308 not used C302,307 180 pF* 1000V SM-19 252-0180 C303,309 270 pF* 1000V SM-19 252-0270 C304,310 360 pF* 1000V SM-19 252-0360 C305,311,319 680 pF* 1000V SM-19 252-0680 C306,312,317 1500 pF* 1000V SM-19 252-1150 C313,314 160 pF* 1000V SM-19... - Page 31 W309 C326 C334 RLY304 RLY310 J401-3 C337 J401-2 C325 C333 C338 RLY309 RLY303 J401-4 C339 J302 C328 C336 RLY306 RLY312 J401-8 C327 C335 C340 RLY311 RLY305 J401-6 C341 C329 C331 RLY301 RLY307 J301 SW101 C330 C332 RLY308 RLY310 MOD-10MB D301 RLY301 RLY307 130pf...
- Page 32 862-ALS600-9 Rev 0 R202 82 ohm 1/2 watt 101-1820 R203 3.3K 1/4 watt 100-3330 R204 2.5K sub horz. Trimpot 104-2520 R205 2.2K 1/4 watt 100-3220 R206 10K ohm 1/4 watt 100-4100 R207 470 ohm 1/4 watt 100-2470 R208 10 ohm 1/2 watt 101-1100 R209 IK 1/4 watt...
- Page 33 F (Red/Blk) E (Red/Wht) G (Green) To J5-4 To J5-3 To J201 Q204 R215 C212 R214 C (Yel) To W309 & J5-5 R213 C211 In from To R12 D (Wht) PA RF Bd R208 C210 C208 C204 R207 T101 Blue D201 Q202 To J5-6...
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Page 34: Led Board
LED Board 50-0600-4 Designator Description Part Number CR401 Green LED 320-0500 CR402 Yellow LED 320-0300 CR403 Red LED 320-0522-1 J401 10 pin header 612-0110 R401 470 ohm 1/4 watt 100-2470 R402 1K potentiometer 105-1301 Fault... -
Page 35: Swr Detect Board
SWR Detect Board 50-0600-5 Designator Description Part Number C501,502 150 pF 1KV disc cap 200-2150 C503 not used C504 33 pF 1KV Disc 200-2033 C505,506 .01 uF 50 Vdc 200-0416 C507 3-12 pF 500V TrimCap 200-0416 D501,502 1N34A or equiv. 300-0346 R501 3.3K 1/4 watt... -
Page 36: Als-600 Chassis Components
ALS-600 Chassis Components Designator Description Part Number 4.5" fan, 12VDC 410-3132 for B1 fan filter screen 410-4600 Cl-C5 .01 50V disc capacitor 200-2100-1 C6-C7 .01 250Vac capacitor 200-2100-2B .01 KV disc capacitor 200-2100-2C J1,J2 SO-239 jacks 610-2005T J3-J5 phonojacks 600-1003... - Page 37 C3 C4 W309 W318 J105 W316 W313 W312 Red/Wht Red/Blk • 401 LED J106 SW1 Stby/Op • • • W401 W402 • W403 W404 Red/Wht • W405 W406 W407 W408 • ALS-600 Wiring Diagram Blu: To LED Board Pin 8...
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Page 38: Als-600Ps Parts Lists & Schematics
ALS-600PS PARTS LISTS & SCHEMATICS Power Supply Board 50-0600-6 Designator Description Part Number C603 2200 uF 25V radial lead 203-0207 C604 220 uF 25V radial lead 203-0565 D601-603 1N4007 or equiv. 300-0266 F601 2 amp slow blow NIDL type 755-1102 F602 2 amp fast blow 755-1150... -
Page 39: Als-600Ps Chassis Components
ALS-600PS Chassis Components Designator Description Part Number 3" muffin fan 410-3583 for B2 fan guard 410-4584 27000 uF 75 Vdc capacitor & 270-8270-2 mounting bracket 735-0159 C3,4 .01 uF 250 Vac disc capacitor 200-2100-1B 50 amp bridge rectifier 300-9200 F601 2 amp slowblow IvIDL type 755-1102 F602... -
Page 40: Als-600Sps Wiring Diagram
ALS-600SPS Wiring diagram VOLT CURRENT LAMP RED/WHT B5 +14V BLUE BLUE .01 uF .01 uF J1.2 J1.3 J1.4 FROM J1.5 CABLE J1.6 J1.7 J1.8 BLUE J1.11 .01uF RELAY 1 B1 AC/N .01uF AC CORD 10 OHM 10 WATT .01uF YELLOW B2 AC/L .01uF... -
Page 41: Als-600Sps Schematic
ALS-600SPS Schematic... - Page 42 IMITED ARRANTY Ameritron warrants to the original purchaser that this product shall be free from defects in material or workmanship for one year from the date of original purchase. During the warranty period, Ameritron (or an authorized Ameritron service facility) will provide free of charge both parts and labor necessary to correct defects in material or workmanship.
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