Steve,
There is nothing special about the low-pass filter that might require you to
use a
particular brand name. A ferrite isolator is a nonlinear device, and therefore
it
will generate a strong second harmonic which must be attenuated by either a
notch
filter or a low-pass filter. Notch filters are much cheaper than low-pass
filters,
but only attenuate the second harmonic. By definition, a low-pass filter
effectively blocks all harmonics. Both types of harmonic filters are offered by
Sinclair, Decibel Products, Telewave, EMR, TX-RX, and others.
73, Eric Lemmon WB6FLY
> Steve Rodgers wrote:
>
> >Where would one expect to find the low pass filters to use with this
> >isolator?
> >If they are hard to find or are expensive, does anyone have a LPF design the
> >can share which is capable of 50W on 70cm which can be constucted in a die
> >cast aluminum box?
> >
> >I have an ridiculously expensive and bulky K&L 3TNF500/1000 tunable
> >bandreject
> >filter [which is overkill] I'm using temporarily.
> >
> >Steve
> >WA6ZFT
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
