This Band Pass Filter (BPF) kit is for receiver input filtering. It uses the popular double-tuned-circuit which is reliable and easy to build, without needing access to any special equipment.
Kits are available for 10 HF bands 160, 80, 60, 40, 30, 20, 17, 15, 12, and 10m. The kit uses a high-quality double-sided PCB with silk-screen, solder-mask and through-hole plating. The capacitors supplied with the kit are high-quality RF ceramics of the C0G type (a.k.a. NP0 – near-zero temperature coefficient).
Designed for the relay-switched LPF kit, or your own projects. The Band Pass Filter kit is the same size as our LPF kit, 1.5 x 0.5 inches (38.1 x 12.7mm). The kit can therefore be used with our relay-switched filter kit. It has a 50-ohm input and output impedance.
Please read the kit-building instructions for more details on the circuit, design trade-offs, construction, and adjustment procedures. There is a very good video that comments on the filter – click here.
This is a kit and you will only be receiving a plastic bag with components that you have to assemble yourself using appropriate tools and skills. Assemblers may be available at additional cost for some kits. The photos are only representative examples of the completed kit. Always download the latest information from the website at <a href=”http://www.qrp-labs.com” target=”_blank” title=”QRP-Labs”>http://www.qrp-labs.com</a>