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1. INTRODUCTION
This assembly manual covers the Hardrock-500 HF Amplifier Support Package manufactured by HobbyPCB, LLC
The Hardrock-500 is an Amplifier Support Package and contains everything needed to support in operation of a RF
amplifier capable of operation in the 1.8 – 30 MHz band at power levels up to 500W.
To create a complete amplifier using the Hardrock-500, the builder must supply a suitable amplifier deck. HobbyPCB
engineers have extensively tested the Hardrock-500 with the RF Power Tools, AN-1819 amplifier board that uses a pair
of Microsemi VRF2933 LDMOS FETs and is capable of 400-500W output with 5 watts of drive.
ITEM SPECIFICATION
Manufacturer HobbyPCB, LLC.
Model Number Hardrock-500
LPF Bands 160, 80, 60, 40, 30, 20, 17, 15, 12, 10 meter Amateur Radio Bands
AC Power Input 90-260 Volts AC, 47-63Hz, 13A max. @ 115V, 6.5A max @ 230VAC
DC Power 57V Volts, 22 Amps maximum, 1250 watts
DC Output 13.5V, 2A max for powering transceiver
Cooling RF deck: 3 fans, 32CFM Power Supply : 1 Fan 26 CFM
In/Out Jacks Three UHF connectors; 1 radio, 2 antenna
Size 9” W by 7” H by 14.2” D
(229mm W by 178mm by 361mm)
(not including switches and connectors)
Weight 16.5 lbs/7.2 Kg under 18 lbs/8.2 Kg with ATU
Metering V
DD
: 0 – 60 Volts
I
DD
: 0 – 20 Amperes
Forward Power: 0 – 500 Watts
Reflected Power: 0 – 50 Watts
Drive Power: 0 – 10 Watts
Temperature: 0 – 70°C
VSWR: 1.0 – 9.9:1
Hardrock-500 features:
Completely self-contained - built-in power supply for 80-260 VAC
Light weight - 7.5 Kg (16.5 lbs.) including power supply
Dual color LCD touch screen displays for metering and operating controls
Full HF coverage of 160-10M amateur bands
Seamless integration with transceivers from HobbyPCB, Elecraft, Yaesu, Elad and Xiegu
Internal ATU and input attenuator for 100W transceivers (coming soon)
Arduino Mega controller - 100% open source firmware
Automatic protection for SWR, temperature, voltage, current and excessive drive
13.8V, 2A DC output to power QRP transceivers
USB control for unattended/remote operation
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