I stand corrected.
On Thu, 17 Mar 2005 10:26:27 -0800, Bob Dengler
<[EMAIL PROTECTED]> wrote:
>
> At 3/16/2005 10:04 PM, you wrote:
>
> >Helicals are great, small little filters. But they are lossy because
> >of their small size so you need to follow with a Amplifier, This is
> >already done in the front end assembly, MASTR-II VHF uses 5 helicals
> >and then an amplifier and another 2 helicals, if I remember correctly.
>
> Not quite. The 5 helical resonators feed a JFET mixer, filtering the
> signals from the RF input. The other two also feed that mixer but are LO
> filters (the UHF version has 3 - easiest way to tell what band a G.E. radio
> is on if it's missing the model # plate). There is no amplification at RF
> in a stock Mastr II RX.
>
> Bob NO6B
>
>
> Yahoo! Groups Links
>
>
>
>
>
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