Miniature HF Band-Pass Filter for 20 Meter band (BPF) (KIT)

Miniature HF Band-Pass Filter 20 Meter band BPF (Kit)

Description

•    5% 0402 or 0603 NPO Capacitors​
•    Adjustable inductors

Each of them has a unique code number to help us keeping track of the inventory of the components and ensure error avoidance.​ There are 9 filters available, one for each of the Amateur Radio HF bands and a 10th is getting ready for the new 5 MHZ band. Each of them is offered as a DIY KIT or ready-made and tested. They can be used in receiver input stages, before a preamp and maybe a second after the preamp, to make switched preselectors or multiplexers. They can only work with low-level transmit applications at mW level to clean up VFOs, mixers before a power amplifier, for experiments and measurements. Especially cleaning RF signal generators for IMD measurements.  Aligning the filter is very easy, by adjusting the two variable inductors with a ceramic or plastic slot-tip screwdriver.​

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