[sdiy] mc1496 app note questions

[Christian Oncken]

I found a circuit for a simple SSB modulator on the web some time ago, built
it up on a breadboard and stuck it away... yesterday I found the breadboard
with the circuit still intact and wanted to build it onto perfboard, but
have lost the schematics.  I searched on the web and couldnt find the
original schematic, but they were taken directly from the mc1496 app notes
anyway, so I looked there... I found 2 sets of app notes... 1 from motorola,
and 1 from philips...

The motorola one looks right, however the philips one looks a bit strange to
me...

http://www.semiconductors.philips.com/acrobat/applicationnotes/AN189.pdf

is it my imagination or is it not good to connect -v directly to ground?  Is
that what is going on in this schematic?  I dont understand... could one of
the list gurus clarify this for me?  figure 5 "double suppressed carrier
modulator"

Anybody looking for a freeked out effect for cheap should build one of these
things... I dig listening to foreign language shortwave broadcasts tuned
slightly out... it sounds so "alien".

Christian Oncken.