[Lowfer] TAG in PSKAM10 Mode

[Stewart Nelson]

Hi Ed,

If you can generate 4 times the desired LO, just use a dual
flip-flop, as described in my previous post, to get the RF phase
shift.  An advantage is that it is nearly independent of frequency.

You can also use the mux as described to get the SSB output.
If your audio phase shifter has 4 outputs, as many do, it's
even simpler:  Use only one mux section, wire it to send
+I, +Q, -I, -Q in sequence.  You'll then have a single-ended
SSB output.

73,

Stewart KK7KA


> A block diagram would be a good start as I have build a number of 90�
> differential phase shifters and understand the design. What did you use
> for balanced modulators and what kind of RF phase shifter did you use to
> get the two reference signals?