HF-AMP-CTL Overview

This design is from Kurt (DJ0ABR) were i modified the layout to 0805 SMD components and added some functions.
A detailed description of his version can be found HERE.

I copied Kurt's description here and added / modified it with my changes

Overview

The DSP-7 board can be used as a controller for amateur radio amplifiers (lowband, shortwave, VHF /
UHF / SHF) and also as a display for power / SWR meters (simultaneous single, dual or triple SWR
bridge).
This description focuses on the DSP7-7-PA, which is used as a power amplifier controller. It supports
most home-built amplifiers, making it a professional product that outperforms most commercial
power amplifiers in functionality and safety.

These are only three examples from the 14 screen menus:

Basic operation screen

Photo realistic SWR

History

User interface: display of power / SWR measurement

Large 7 “TFT color touch screen with SD card slot
Many convenient screens display measurement values and amplifier status
Color bar graphs and data as numerical values
Photo realistic power / SWR meter simulation of a cross pointer instrument
History graph, selectable recording times
Three power/SWR measurements: at input, between amplifier and filter, and at output
Works with all AD8307-based power / SWR couplers (even home-made) via software calibration

User interface: analog measurements

Temperature-1: temperature of the LPF
Temperature-2: Temperature of the heat sink
Supply voltage (four selectable ranges from 50V to 4kV)
Supply current (five selectable ranges from 10A to 200A)
DC input power
Amplifier efficiency

User interface: amplifier control

ON switch: by touch key
STANDBY: by touch key or external key
ACTIVE: by touch key or external key
EMERGENCY OFF: by touch key or external key

Switching functions:

PTT control
Fan or water pump control
DC power supply control / Softstart
Power supply safety circuit control
ALC monitors current consumption to limit control power and is therefore independent of SWR
Output power derating based on PA temperature via ALC

Band and antenna selection:

Maual band selection via touch key
Automatic band and antenna selection for ICOM transceivers
Automatic band selection via remote control and Ham Radio Deluxe
Automatic selection of up to 3 antennas, convenient assignment of bands to antennas
Maual antenna selection via touch key or remote control

Safety functions:

Monitoring of the supply voltage, complete shutdown in case of a fault
Monitoring of supply current, complete shutdown in case of error
Temperature management: automatic switching on / off or PWM control of the fan and deactivation of TX, if an
adjustable limit value is exceeded
Control of the transceiver via ALC to reduce the control power
Monitor control power and switch to standby mode when limit is exceeded
Monitoring of SWR between amplifier and low pass filter, switching off if wrong filter selection is
made
Monitoring the antenna SWR. If worse than 2: 1 then RX mode, if worse than 3: 1 emergency
shutdown.

Misc:

Serial CI / V interface to read out the tape from Icom devices
RS232 interface for firmware updates and remote control
User can update many images with own graphics with SD card
Powerful ARM Cortex 3/4 miccontroller with 1MB flash
DC power supply: 10-15 volts, 250mA
Controller and display is one compact unit, easy mounting on front panels
RF tested 4-layer board, inputs with EMI ferrites and capacitors