[CQ-Contest] Filters

[Jukka Klemola]

>-----Alkuperäinen viesti-----
>Lähettäjä: cq-contest-bounces at contesting.com
[mailto:cq-contest->bounces at contesting.com] Puolesta Mario, S56A
>...
>
>Simple ICE filter configuration should survive most abuses but 21/28
MHz 
>isolation is not good enough for SO2R.

Just add coax stub that will provide extra attenuation between 21/28 and
other that provides attenuation to 28/21.
Simple and adds attenuation at high power level part of the system. That
is the part where the extra attenuation really counts.


>Please note that BPF info is available in ON4UN book on low bands.

Difficult to make vs stub.


>73 de Mario, S56A

73,
Jukka OH6LI