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mixer: DBM or dual gate mosfet?
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... If you building a radio that runs on batteries then using more power may be bad. Also keep in mind that more power=more heat If you are building a simple analog VFO, temperature compensating the VFO can be the most tedious part of designing a receiver. Depending on how tight your box is, the difference in heat could be an issue. Keeping the oscillator stable while delivering more power also means more buffer stages between the VFO and the mixer. If you are designing with a DDS, of course, all this is pretty much moot. With a typical DDS chip and a packaged clock oscillator at some high frequency, the oscillator will draw so much current and generate so much heat that what the mixer requires is invisible. ... |
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