The F1500 is a board of Low Pass Filters designed to filter output harmonics for any HF/low-VHF amplifier of 1500W or lower.
This is an Advanced level kit and assumes you have a good understanding of electronics. The PCB is supplied with the surface-mount components already installed, but some of the parts supplied in this kit will require assembly and soldering.
The Control Port is used to interface with a control unit that will provide +12V @ 200mA supply and filter selection. It is designed to be easily interfaced with a microcontroller of your choice (eg: Arduino). The signals are better described in the provided Assembly Instructions.
- 7 selectable Low Pass Filters covering 1.8 to 72MHz
- Handles 1500W PEP
- Excellent harmonic attenuation with low insertion loss
- SMA connectors for RF input and output ports
- Solder pads for coax cable (recommended at 1kW or more, instead of SMA connectors)
- Uses quality RF grade capacitors (rated for high voltage and RF current) and iron powder cores
- Easy to control with TTL levels from Arduino type boards
- Compact size, PCB is just 190x110mm
- Stackable with the A600 v2.0 (and later) amplifier board
- All details are described in the included documentation. This is a kit and requires assembly.
SPECIFICATIONS
- Power handling: 1500W PEP from 1.8MHz to 72MHz
- Insertion loss: -0.2dB typical, maximum of -0.38dB
- 3rd harmonic attenuation: better than -40dB
- Connectors: SMA for RF signals, 2.54mm spaced header for Control Port
- Size: 190x110mm
KIT CONTENTS
- 190*110mm PCB board with installed SMD parts
- Full set of magnetic cores & wires for inductors (require winding)
- Relays, connectors
- Assembly instructions
More information about this kit can be found on qrpblog.com.
See my other items, I am also offering other modules to build a complete HF/VHF RF power amplifier.