Jimmie D wrote:
Just a memory from tens of years ago:

The 7360 made a decent balanced modulator, but it is,
by definition, extremely sensitive for external electric
and magnetic fields.

--

Tauno Voipio (OH2UG)
tauno voipio (at) iki fi

You just answered a problem thats had been nagging me for over 30 years.
Now I know why the SSB transmitter I built had such an annoying hum in it.

I never thought about it being affected by a magnetic field.
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For that reason in 1970s transceivers like Yaesu FT-400/401 the 7360
used as balanced modulator was 'packed' in a tight metal screen bonded
to chassis.

Frank GM0CSZ / KN6WH