[VHFcontesting] Inline 2m Bandpass Filter

[Sean Waite]

How hard is it to tune stub filters? What equipment do you need?

Sean WA1TE

On Sun, Jan 22, 2017, 23:24 Floyd Rodgers <kc5qbc at swbell.net> wrote:

> Do some research on stub coax filters. Use them as band reject filters
> on each radio. For example, on the 2m radio, add a 6m stub and 222 stub
> and 432 stub. That way you only receive 2m signals. Same concept to the
> other bands, i.e. no stub filter on the frequency you want to receive
> but stubs for all the others you don not want to hear. Typically done
> with coax so cost is reasonable, just bit more complex since you also
> add a 4 way connector instead of just a tee. I use 2 duplexers in my
> install to siamese 2/ and 70cm into hardline with added benefit of
> ~100+db of isolation from each port of my ft847.
>
>