AMERITRON ALS-1300 Technical Information

1Ameritron ALS-1300 1200-watt NO TUNE TMOS-FET AMPLIFIER The Ameritron ALS-1300 is a 160 through 15-meter 1200-watt output solid-state amplifier. A

10Front Panel Operation Two dual-movement cross-needle meters are illuminated with LEDs J4 determines the brightness of the LEDs. J4 is located on

11 ALC Monitors the ALC voltage on the rear panel ALC Jack. Meter reading is the 0-70 scale which corresponds to 0 to -7 volts. HV1 Monitors the op

12 When operated outside the frequency limits above, harmonic suppression might not meet acceptable limits. You may have to use additional external 2

13the antenna, and the antenna tuner must be able to handle at least 1200 watts of carrier or peak envelope power. 9. Place the amplifier in OPERAT

14Circuit Boards There are ten basic circuit boards plus two power amplifier modules in the ALS-1300. The text below gives a brief description of eac

15RJ45 The RJ45 board mounts on the rear panel. It contains two RJ-45 jacks used for remote control operation. RLY The RLY board contains two transmi

16Bandswitch BS1 Remote+12V7 July 200812V1015204080160G12V1015204080160G+12V+12V1012151720304080160987654321SW 1rearviewBS - 1J3D11N4001D21N4001D31N

17Control Board CB1 CB1 rev2.1 090227816Bias ABias ABias BBias BKFSPTRSARFK+-GCLASPTRF+-GXX12SCLGGGXXSS65723110108109123131412675FAN12352714113613711

18Combiner 2000 watt CMB CMB 081217 rev0a10050 OHMS OUT50 OHMS IN50 OHMS INT5T6PA APA B CMB combiner board Figure 6 Filter FL10 FL10 081210OutI

19Metering Board MB1 MB1 Rev3090227PIN 1...GND 2...FWD 3...MM - 4...MM + 5...LMP 6...GND+-CTRL J1METER BRIGHTNESS

2Table of Contents TABLE OF CONTENTS ...

20PA Module 081217 Revision 0aPAM-600RedBrnOrg0Red0YelFB1FB2C11330pFP1CONNPA Out PA In X1C13.001uFC9.001uFC19.001uFC2.001uFC23.33uFT2T1C3470pFC204

21 Interface Connections RJ45 - J1 -RJ45 Rev0 090217 - J2 -C10.1uFD2D1J3CONNPin1Pin2Pin7Pin5Pin3Pin4Pin8Pin6Pin1Pin2Pin7Pin5Pin3Pin4Pin6Pin81

22 WHITE GREEN

23 White 50V

24

25Reference figures and drawings Interconnections Figure 1 ...

26 Exhibit V Operational description HO82WUALS13 ALS-1300 Technical and Operational Overview The ALS-1300 is an amateur radio multiband radio freq

27transistor temperature increases. This bias feedback system keeps transistor quiescent current stable independent of transistor junction temperatur

28AMERITRON 116 Willow Road Starkville, MS 39759 USA 662-323-8211 LIMITED WARRANTY Ameritron warrants to the original purchaser that this product s

3 Amplifier Features This amplifier provides the following standard features: • Eight conservatively rated, very linear 50-volt MOSFET transistors

4Power Supply The power supply for the ALS-1300 is a voltage regulated current limited supply. It contains 14-volt positive and negative supplies as

5General Information Amplifier The Ameritron ALS-1300 is a solid-state 1200-watt nominal RF output power 1.8-22 MHz amplifier (1.8-30 MHz with option

6Warning: Do not block cooling air inlets and outlets! Never expose the amplifier to water or mist. Airflow The amplifier must have a clear area to t

7Interconnection Wiring ANTRLYALCOUTINRLYALCTRANSMITTER / TRANSCEIVERALS - 1300POWER SUPPLYINTERCONNECTIONSANTENNA,ANTENNA TUNERS, SWITCHES,FILTERSR

8 Amplifier Rear Panel PWR SUPPLY To prevent connecting the power plug wrong, the large black multi-pin connector is indexed by an offset in the t

9 Front Panel Amplifier Front Figure 2