On Jul 1, 2:25*pm, "Joel Koltner" wrote:
....

Anyone have a favorite IQ modulator that'll work on 2m (and perhaps 70cm too)?
The data sheet's detail of "industry standard pin-out" would suggest that
there are others...
....

1GG7-4225?? :-)

Of course, there are others from places like Analog Devices, Hittite,
Maxim etc.

I'm not sure how they work, but suppose that something similar to
what's used for an audio phase shift network for use generating SSB
could be used. At RF frequencies, the capacitors would not be large,
and clearly it's not terribly difficult to integrate well-matched
capacitors (e.g. in ADC converters). Perhaps I can probe some of my
contacts to find out more...

Cheers,
Tom