[AMRadio] hamfest oscopes


Jim candela jcandela at prodigy.net
Wed Dec 27 22:35:42 EST 2006



Jason,

   You can connect directly to the deflection plates for the audio as you
describe. Most modern (1970's and later Tektronix and others) analog scopes
have a setting called X:Y when the horizontal sweep knob is at max CCW. In
this case Channel A is for the X axis and Channel B is for the Y axis. With
a scope like this you can scale the audio and RF for any convenient level
within the voltage range of the scope inputs.

Jim
JKO

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net]On Behalf Of Kf6 Pqt
Sent: Wednesday, December 27, 2006 7:43 PM
To: amradio at mailman.qth.net
Subject: [AMRadio] hamfest oscopes


For a trapezoid pattern, dont you just send the signals directly to
the deflection plates? So all thats really required from a junker
scope is a power supply, a functioning filament, and some viable
phosphor left on the screen, right?

Jason kf6pqt

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