Re: [amsat-bb] WC0Y Web site

[Bill Hurlock <bill@xxxxxxxxxxx>]

The SRF of the inductors isn't really 2400 as stated it is more like 2700 if you
look at the spec sheets.

Pieter Ibelings wrote:

> I am confused here with the last paragraph in WC0Y's mods:
>
> >>>These inductors are Coilcraft 0805CS-220X_BC part number.  This one was
> chosen
> >>>because it is designed to have a series resonant frequency (SRF) around
> 2400
> >>>MHz.
>
> If you want the signal to pass when having an inductor to ground, you want
> the Parallel resonance to be at the frequency of 2400. If the series
> resonant frequency is 2400 then it will shunt all of the energy to ground.
> The first resonance of decent inductors is a Parallel resonance which is the
> case in these inductors. The "S" stands for SELF and nor series. Just my
> $0.02.
>
> 73's
>
> Pieter
> N4IP
>
> ----- Original Message -----
> From: "Geoff Taurins" <geofft@bigpond.net.au>
> To: "amsat-bb" <amsat-bb@AMSAT.Org>
> Sent: Wednesday, February 28, 2001 19:17
> Subject: [amsat-bb] WC0Y Web site
>
> > G'day All. For those that didnt see the original msg here is the web site
> > for the WC0Y mods for the drake converter.
> >
> > http://communities.msn.com/wc0y
> >
> > Hope it helps.
> >
> > Cheers Geoff VK3JDG
> >
> >
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> >
>
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--
Bill
WA2TQI


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