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RF linear power Amplifier with build-in antenna tuner (ATU)
PA500
INSTRUCTION MANUAL
Version 3.2 / Revision 4
operating frequency range between 3.5MHz-30MHz
The device requires an amateur radio transceiver to operate.
This device is for use by licensed radio amateurs only
FCC-ID: 2A2IEPA500
© 2021 DL4KA
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Table of Contents
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Summary of Contents for DL4KA PA500
- Page 1 RF linear power Amplifier with build-in antenna tuner (ATU) PA500 INSTRUCTION MANUAL Version 3.2 / Revision 4 operating frequency range between 3.5MHz-30MHz The device requires an amateur radio transceiver to operate. This device is for use by licensed radio amateurs only FCC-ID: 2A2IEPA500 © 2021 DL4KA...
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Page 2: Table Of Contents
BYPASS Mode ..................... 10 Good to know about automatic Modes ....................10 Good to know about RF-VOX ....................... 10 PA500 transmission modes and drive power ..................10 PA500E transmission modes and drive power ..................11 Protective internal circuits ........................11 safety alerts............................ - Page 3 Changes Manual changes Version / revision V2.6 / 1 Manual refers to PCB version < V2.9 V2.9 / 2 Manual refers to PCB version V2.9 CAT Interface changes: Pin 6 has 12V/150mA (instead of 5V/100mA) Pin 5 has a PWM control signal to control a fan (temperature controlled) transmission modes and drive power section: digital modes now no longer have power restrictions.
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Page 4: Connectors
connectors left side there is no reverse polarity protection, incorrect wiring will destroy the device. right side... -
Page 5: Getting Started
10A of continuous current. Under normal circumstances, the PA500 does not need to be configured. The PA500 should be able to start operating after being switched on. It does not need a control cable because RF-VOX (Mode 2) is pre-configured. -
Page 6: Leds And Button Functions
LEDs and Button functions left side in manual mode the correct Band must be selected, otherwise the PA will not transmit right side... -
Page 7: Device Configuration
device configuration How to configure the operation mode (The device is preconfigured, normally no changes needed) 1. PA must be powered OFF 2. TAP and HOLD the BAND and BYPASS Button for about 0.5 to 1 second 3. CONTINUE TO HOLD the BYPASS Button, release the BAND Button 4. -
Page 8: Manual Band Selection Mode
Manual Band Selection Mode The PA500 has 5 Band selection options: 80m, 40m, 30m, 20m and 10m. Most of other Frequencies between these Bands can also be used. The table describes the selection that must be made for a specific Band to use. The manual band selection option is only accessible in PA operation Mode 2. -
Page 9: Pa Operation Modes
The PA500 has a advanced configuration interface via an UART Interface (38400,n,8,1). 1. Unplug the Power connector from the PA500. 2. Press and hold the BAND button. 3. Plug the power connector into the PA500 while still holding down the BAND button. -
Page 10: Good To Know About Bypass Mode
RF-VOX feature. The internal VOX circuit needs a certain level of input drive to work properly. PA500 transmission modes and drive power TX operating max. drive power peak drive max. -
Page 11: Pa500E Transmission Modes And Drive Power
RF output Power can be reduced by the protection system depends on the case temperature device will go into bypass when the device temperature reached 70°C the maximum output power is typically reached at an input power of 2W(PA500)/4W(PA500E) PEP **** high operating voltage and peak input drive power, this setting may violate other operating conditions. -
Page 12: Pa500 Safety Operating Area Soa
PA500 safety operating area SOA RF output power vs. RF input power RF output power in Watt @ 16.8V Output power limitation Switch to bypass @ 70W PEP safe operation area RF output power vs. operating voltage input RF output power in Watt @5W RF Input... -
Page 13: Pa500E Safety Operating Area Soa
PA500E safety operating area SOA RF output power vs. RF input power RF output power in Watt @ 16.8V Inout/Output power limitation Switch to bypass @ ~100W PEP Switch to bypass @ 5W drivePower safe operation area RF output power vs. operating voltage input RF output power in Watt @5W RF Input Input/Output power limitation Switch to bypass @ ~100W PEP... -
Page 14: Special Transceiver Characteristics (In Manual Modes)
Known characteristics in connection with the operation of the PA500 are listed here. Yaesu FT817/818 If the Yaesu FT817/818 is used with a CAT interface cable, the transceiver will not turn on if the PA500 has already been turned on. Therefore, make sure that the transceiver is always switched on first and then the PA500. - Page 15 ELECRAFT KX3 LAB599 TX-500...
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Page 16: Safety Instructions
safety instructions The device can get very hot. It must be operated in such a way that there are no heat-sensitive objects near the device. Please ensure that the device is always well-ventilated during operation. Please be aware that the device is still hot for a while after use. Please keep the device away from children, the device develops a temperature level which can cause burns to the skin. -
Page 17: Power Considerations On The Go
The "Buddipole POWERmini USB" is a pocket-sized 12 VDC portable DC power management system with built in solar controller that is particularly suitable for portable operations. This device can deliver up to 32A at 12V. this makes it a suitable device for supplying your transceiver and the PA500 with power on the go. -
Page 18: General Troubleshooting
Check your Transceiver and connection When the PA500 current draw is too high (more than 15A), or a short circuit occurs, the internal fuse may blow. The unit will then no longer turn on. The device needs a service. Do not allow the maximum output power of the amplifier to exceed 40 W. -
Page 19: Device Label And Id Location
Device LABEL and ID location WARRANTY LIMITATIONS Any of the following will void the warranty applicable to the product and its accessories: A. Modification-, removal-, or maintenance of the internal circuitry, without permission and authorization. B. Unauthorized change of product’s embedded software. C. -
Page 20: Note Amateur Radio Operation
PA500. Further, this Manual is provided “as is” and DIY599 shall not be liable for possible errors contained herein.
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