Alright, I have a MFJ-269 and just love the thing.
I suppose depending on the filter being
designed/tested would determine what the dip means?
ie, if you are building a Band-reject filter, the dip
means that is the there-about freq where most
attenuation is? and vise versa with a band-pass?
~Ben, KB9LFZ
--- skipp025 <[EMAIL PROTECTED]> wrote:
>
>
> Hi Ben,
>
> Only if you had a lot of spare time. The common
> Grid Dip Oscillator tends to be relatively broad
> banded compared to more modern tools like the
> MFJ-259 and a Service Monitor. Other issues like
> the frequency drift need to be kept under control.
>
> Loop coupling is fine, you just have to make
> sure you're past the min critical loop length
> to keep the coupling issues out of the main
> picture. So a 3 inch hairpin style loop or
> two/three turns of wire around a 1/2, 3/4 or
> 1 inch form will probably work. Lead length
> is not an issue as long as you keep things
> smart.
>
> good luck
> 73's
> skipp
>
> www.radiowrench.com/sonic
>
> > Benjamin Naber <[EMAIL PROTECTED]> wrote:
> > Morning radio gurus,
> >
> > can a guy accurately and properly tune helical
> > resonator coils and other LPF & HPF using a grid
> dip
> > meter? If so, what would be a good approach for
> doing
> > so? Ideas for the best way to couple the GDO to
> the
> > filter?
> > ~Ben, KB9LFZ
> >
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
> [EMAIL PROTECTED]
>
>
>
>
>
>
=====
-------------------------------------------------
~Ben, KB9LFZ
Got your radio on and "listening?"
Then KEY the radio and say that you are! LET US USE WHAT WE HAVE!!
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