[Amps] Transmit signal monitoring AM & SSB

[J & B Cucuzza]

Hi all
I plan on trying some AM.  I remember the old dedicated station monitors 
of the past.  I've seen some RF samplers & AF demodulators.  These seem 
to be in the $200 + range, along with the used older dedicated CRT type 
station monitors.
I'm curious as to what folks are using to monitor modulation.  I would 
like to see the trapezoid waveform & modulated RF waveforms.
I'm leaning on home-brewing a set vs buying something that costs over 
$200.  Here is a YouTube, there are a few revisions the author has made, 
so it is a bit more complex than the video:
https://www.youtube.com/watch?v=y4Zt_LJX1Tc
This second link shows a commercial version:
http://www.nu9n.com/scope_your_audio.html
I plan on using a 30 MHz dual trace o-scope, it is a Hitachi V-355.
Transceiver is a Kenwood TS-580S.
Amplifier is a Henry 2KD Classic amplifier.  (Desktop version, two 
3-500Z tubes, capacitor filter, no choke.)
Thanks in advance
73
Joe
KA8WEP
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