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Monday, 06 June 2016 16:11

2 Metre Bandpass Filter

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This 2 metre BPF was a design I found in the Radio Communications Handbook page 5.30. Having recently committed my existing filter to a breadboard project I decided to go ahead and construct a replacement.All of the critical dimensions are shown in the handbook so construction was quite easy.

Since I completed the filter it has been aligned by a friend Arthur G4CPE. Setup was carried out on Arthur's Wiltron RF Analyser. Bandwidth is 5MHz and loss is under 2dB at 146.5MHz.

This is an inexpensive project using basic tools, coils are wound on a 9.5mm drill bit and the piston capacitors were found on eBay. There's not much to it as you can see from the pictures below.







Read 1088 times Last modified on Saturday, 22 December 2018 10:25

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