PI4CC Contest Club

In may-june QST 1998 there is a nice article how to make bandpass filters for HF. The BCC have make some modifitcations and this is our base to make those filters

Using a housing with 120mm * 60mm * 50mm (L*D*H)

4 stand-offs and 2 sheets to make a HF and bullit proof housing.

All 6 together.

Filter \ Band	10m	15m	20m	40m	80m	160m
10m	0,6 db	26 db	45 db	67 db	70 db	70 db
15m	66 db	0,7 db	33 db	57 db	66 db	70 db
20m	36 db	50 db	0,3 db	38 db	53 db	64 db
40m	54 db	58 db	65 db	0,3 db	46 db	68 db
80m	54 db	64 db	69 db	59 db	0,6 db	37 db
160m	68 db	52 db	61 db	73 db	50 db	0,3 db

Click on the band to see plots, swr and photo's of the filters.