The usual configuration for a pipe-cap filter is sketched in Figure 1: a metal plate shorting the open end, with probes for inpu
10 GHz "Pipe cap" Filter - YouTube
Building a 10 GHz Pipe Cap Filter – VK4GHZ.com
10 GHz PIPECAP FILTER
Compact 10 GHz transverter [Lötlabor Jena]
EA4EOZ, an amateur radio electronic enthusiast: Pipe cap filters for 10GHz
Pipe Caps Filters for Microwave Rigs - KO4BB
EA4EOZ, an amateur radio electronic enthusiast: Pipe cap filters for 10GHz
M1KTA's QRP ham radio blog: New 13cm pipe end cap filter
Pipe Caps Filters for Microwave Rigs - KO4BB
#21 10GHz Pipe Cap Filter - YouTube
News Item
10 GHz PIPECAP FILTER
Copper Pipe End Cap 10 GHz Bandpass Filters
Pipe Caps Filters for Microwave Rigs - KO4BB
EA4EOZ, an amateur radio electronic enthusiast: Pipe cap filters for 10GHz
Steve on Twitter: "Today I've been experimenting with a QO-100 QRP TX strip. This included a first attempt at making a Pipe-Cap filter. Initial tests confirm it does actually tune to 2.4GHz!