[R-390] test equipment question

[DJED1 at aol.com]

I think you've got all you'll need for troubleshooting the  radios.  Almost 
all of the troubleshooting is checking tubes, measuring  voltages and injecting 
signals.  I don't remember touching mine with an  oscilloscope, although it's 
the next acquisition I would recommend.  I  guess the audio oscillator would 
be helpful for troubleshooting the audio  section, although I haven't seen 
much discussion of audio problems over the  years.
I've found my Tektronix 2215 to be good.  It's a 60 Mhz scope,  small and 
light, and sells for $100-200 lately.  For the audio oscillator,  I started with 
a boatanchor TS-382, but replaced it with a smaller solid-state  unit so there 
was room on the bench for the radio.  You can probably pick  up a good small 
HP for $50.  Enjoy the radios
Ed
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