TABLE OF CONTENTS
1. INTRODUCTION ..................................................................................................................................... 1
2. BASIC OPERATION ................................................................................................................................. 2
Connecting the Hardrock-50 Amplifier ............................................................................................................... 2
QRP Transceiver Setup: Basic .......................................................................................................................... 3
QRP Transceiver Setup: With PTT ................................................................................................................... 3
QRP Transceiver Setup: With PTT and Band Data ........................................................................................... 3
SDR Transceiver Setup: Band Data from Computer ........................................................................................ 4
Using the HR50 as a Driver for a QRO Amplifier ............................................................................................. 4
Operating the Hardrock-50 Amplifier ................................................................................................................. 5
Tuning on the HR50 ......................................................................................................................................... 5
The RX Screen .................................................................................................................................................. 5
The TX Screen .................................................................................................................................................. 6
Safety ................................................................................................................................................................... 7
RF Input Power ................................................................................................................................................ 7
DC Input Voltage ............................................................................................................................................. 7
VSWR ............................................................................................................................................................... 7
Temperature ................................................................................................................................................... 7
3. MENU SETTINGS .................................................................................................................................... 8
Basic Menu Navigation ........................................................................................................................................ 8
Menu Items ......................................................................................................................................................... 9
4. AUTOMATIC ANTENNA TUNER ........................................................................................................... 11
ATU Specifications ............................................................................................................................................. 11
ATU Menu Options ............................................................................................................................................ 11
ATU Operation .................................................................................................................................................. 13
Tuning ............................................................................................................................................................ 13
Recalling Stored Tuning Solutions ................................................................................................................. 13
QRP Mode ..................................................................................................................................................... 14
5. TRANSCEIVER INTERFACING................................................................................................................ 15
Elecraft KX-3 ...................................................................................................................................................... 15
Yaesu FT-817 ..................................................................................................................................................... 16
Flexradio Flex-1500 ........................................................................................................................................... 17
AE9RB Peaberry SDR ......................................................................................................................................... 18
6. SERIAL COMMANDS ............................................................................................................................ 19
7. FIRMWARE UPDATE ............................................................................................................................ 22
Installing the USB drivers and Bootloader ........................................................................................................ 22
Updating the Hardrock-50 firmware ................................................................................................................. 23
Updating the ATU Firmware ............................................................................................................................. 24
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