[hpsdr] VHF/UHF downconverter for HPSDR

[Ante Vukorepa]

On Mon, Oct 3, 2011 at 11:38 AM, Ante Vukorepa <o.orcinus at gmail.com> wrote:
> On ponedjeljak, 3. listopada 2011. at 04:05, Phil Harman wrote:
>
> In which case an input signal at 383-50MHz = 333MHz, i.e. the image
> frequency, will also give a signal at the IF frequency. If you want say
> 100dB of image rejection then your 70cm bandpass filter(s) before the
> mixer will need to provide this level at 333MHz.
>

Now that i've mentioned it, would an image rejection method as
implemented in image reject mixers work, or would that produce
rejection levels too low / losses too high?

(Disclaimer: BTW, please bear in mind that, as i've said, i've never
actively meddled in RF electronics of any kind, apart from an
introductory course on RF comms in university some time ago, and am
just beginning. Meaning i'm pretty clueless re: most of the matter
concerned here.)

-- 
Ante Vukorepa

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