we could use two back to back diodes in each leg of a singly balanced
mixer. i am attaching a proposed circuit.
- f
On Sun, Dec 7, 2014 at 12:49 AM, Arv Evans <arvid.evans@xxxxxxxxx
<mailto:arvid.evans@xxxxxxxxx>> wrote:
Polyakov mixer is interesting because the LO input is at half the
operating
frequency, thus helping to minimize LO leakage into preceding stages.
Other than that it can be constructed in almost any standard mixer
configuration as long as the switching happens on both halves of
the LO
cycle. Not sure if it is good or bad as mixers go...just
different from what
we usually see in ham construction.
Arv
_._
On Sat, Dec 6, 2014 at 10:58 AM, Jerry Gaffke
<dmarc-noreply@xxxxxxxxxxxxx <mailto:dmarc-noreply@xxxxxxxxxxxxx>>
wrote:
If the polyakov mixer has performance issues of some sort, we
could go back to a standard second mixer and divide the BFO by
two (or four) before feeding it to the Arduino. If using an
Si5351, we could use a third output to drive the Arduino. So
the Si5351 can switch mixer LO's as NT7S was exploring, and
any divider needed to feed the Arduino (or other uC) is also
nicely hidden inside the Si5351. OK I'll try to shut up.
Jerry, KE7ER
On Saturday, December 6, 2014 9:23 AM, Jerry Gaffke
<dmarc-noreply@xxxxxxxxxxxxx
<mailto:dmarc-noreply@xxxxxxxxxxxxx>> wrote:
Polyakov. My apologies to Vladimir, and to all you googlers as
well.
Jerry, KE7ER
On Saturday, December 6, 2014 7:45 AM, Jerry Gaffke
<dmarc-noreply@xxxxxxxxxxxxx
<mailto:dmarc-noreply@xxxxxxxxxxxxx>> wrote
After a quick google search for what the heck a Polykahov
mixer is,
