Mark K3MSB wrote:
Yes. I've tried a scope now and then (I have an old 60 Mhz B&K), but
truthfully I've never been able to really see when the modulation
level is 100% or other. I know what ideal waveforms look like (with
test inputs), but I have a hard time with a typical speech waveform.
I guess if I'm really at 20% that would be fairly easy to discern.
When I used the scope before I was trying to figure out how to tell if
I was say at 70%, 80%, 90% etc, and never felt I could do it
accurately.
Read the John/Don/Bacon page about asymetrical audio. It's written
well, it's illustrated well, and completely discusses high-level, plate
modulated audio and how much you -really- need.
http://www.qsl.net/wa5bxo/asyam/aam3.html
(guess the URL would help, eh? sorry 'bout that)
"Operating your AM Rig with out an oscilloscope,
is like driving your car at night without headlights."
(-K4KYV/Don Chester - AM Press Exchange)
---
73 = Best Regards,
-Geoff/W5OMR
