Related Manuals for Mechanics & Electronics ME3000-V
Summary of Contents for Mechanics & Electronics ME3000-V
- Page 1 ME3000-V 2M LINEAR AMPLIFIER GU78B Mechanics & Electronics Inc. Hungary Draskovits Gábor HA1YA Szombathely, Kárpáti K. u. 43. H-9700 e-mail: ha1ya@chello.hu ha1ya@w-nets.hu...
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Page 2: Table Of Contents
C O N T E N T 1.0 General overview..............2 2.0 Specifications ..............4 3.0 Technical description............5 3./a Front Panel................6 3./b Rear Panel................8 4.0 Installation ................9 5.0 Troubleshooting ..............10 6.0 Drawings ................13... -
Page 3: General Overview
ATTENTION! Please read this manual carefully before operating the equipment! The Linear Amplifier is easy to use, and damages can be avoided by following the instructions stated below. Incorrect use may cause the loss of warranty. 1.0 G E N E R A L O V E R W I E W The Linear Amplifier is produced by M+E Mechanics &... - Page 4 1.5 The PA is constructed with the following protection circuits and useful features: Heat up time checking circuit (3min) Protection circuits (Ia, Ig1, Ig2, temperature, SWR>3, ext.) Cooling fan 250m3/h, 230V, 60W. Function and status indicator LEDs (6 pcs) 4.5KVA transformer OPTO coupled PTT switch Built in I/O coax relays External HV power supply (ME2500-S,ME3000-S)
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Page 5: Specifications
2.0 S P E C I F I C A T I O N S ME3000-V Frequency coverage 144-146MHz Operating modes ALL mode Output Power 3000 W pep min. CW/SSB Driving Power 0-40W max. Input VSWR max 1:1.5 In/Out impedance... -
Page 6: Technical Description
3.0 TECHNICAL DESCRIPTION 1. GENERAL RF deck of this amplifier is built in aluminium compartment wich must be electrically tight to avoid RF radiation. RF radiation will decrase output power and can cause self oscillation of the transmitter chain as well as a health risk. We can built in normal19”... - Page 7 150mA on left meter. When you have more than this value, you can adjust for this value with P1 poti on UG1 stabilizer PCB. /On case you use home brew HV supply with lower or larger Ua voltage than 2500V on case ME2500-V and 3500Von case ME3000-V.
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Page 8: Front Panel
3/a FRONT PANEL 1. POWER ON Main switch of the equipment is on the power supply (ME2500/3000-S). 2. ON LED The LED indicator glows when the Linear is switched on. Doesn’t lit in case the 24V DC – supply for the protection circuits and antenna switch - is missing. 3. - Page 9 10. FWD Output power indication. Used for tuning the Linear. The indication calibrated for 50 ohm aerial impedance. At other values the accuracy may be +- 10%. 11. REV Will indicate the relative reflected power on the right side meter. Helps to check the aerial.
- Page 10 3/b REAR PANEL 1. Remote connector Connecting with short cable to ME2500-S or to ME3000-S power supply. 2. FAN 1 Cooling fan for the RF tube (230V/AC) 3. PTT Connection for PTT RCA. The relays are closed by earth connection. Low voltage, low current opto entry.
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Page 11: Rear Panel
4.0 INSTALLATION 4.1 Connect your TCVR to the Linear using a short, 50 Ohm coaxial cable. 4.2 Connect your TCVR ground giving connector to the PTT RCA connector on the rear panel of the Linear, using a screened cable. In case your TCVR has an open collector PA controller output, you can use it without difficulties. - Page 12 4.8 During SSB transmission the peak power of the TCVR may exceed the allowed maximum driving power of the transceiver! Use The POWER knob on the TCVR in this case. 4.9 You can not switch the Amplifier to transmission if Ua, UG2, or UG1 voltage is missing (You can control these voltages on LEDs of control unit.) 4.10 You can use for external units the TX-GND and RX-GND contacts of G2 stabilizer PCB.
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Page 13: Troubleshooting
5.0 TROUBLESHOOTING Malfunctions are mostly due to improper handling, overload or similar reason. 5.1 Do not use higher input power as stated in the specification. The grid protector circuit will usually safe the power valves, but OVERLOAD alarm will appear regularly. - Page 14 5.5 LIMITED WARRANTY The M+E Mechanics & Electronics will warrant that the equipment will perform substantially in accordance with the written materials for a period of 12 month from the date of receipt and will be free from defects in material and workmanship under normal use.
- Page 15 5.7 SAFETY INTERLOCK SWITCH While the Amplifier's top cover is in place, the interlock switch closes to allow AC line voltage to reach the power transformer. When the top cover is removed, the interlock switch opens and disconnects the line voltage. This does not discharge the bank of power supply filter capacitors. Be sure to allow the filter capacitors to discharge before you touch anything inside the Amplifier.