In about 14 hours is my general exam. I know my formulas for calculating PEP and peak / RMS voltage conversions are incorrect (and hopefully I'll have time to fix them after work)
What do you bet I'll be able to study for and pass my extra, knowing the next test session is next monday, first try, before the FCC officially instates my vanity call? (which is the next tuesday, meaning I get one shot at this)
@tek_dmn I'm thinking you got this! Especially given how well you did on your General, I can see you walking out of that test session Monday with your Extra ticket in your pocket.
@kr1st Well, 59% across the entire Extra question pool.... done in one sitting... and now my head hurts (go figure). You don't happen to have any online sources I could check for some of the fundamental knowledge?
@tek_dmn I'm sorry, I really don't. It has been a long time since I last checked into what's out there in training material. I probably should check into that so I can answer that question when it comes up.
I know @kb6nu has an Extra Class License Study Guide in PDF format that you can download for 10 bucks. I've never seen any of his guides, so please don't take it as an endorsement, but it's an option I would consider.
@tek_dmn Been general class for years and I don’t remember those to save my life. Just like working in a lab, there’s a reason why we have reference materials handy. If it’s good enough for Indy’s dad, it’s good enough for me
I did just spend 15 minutes ripping my hair out because "peak" and "peak-to-peak" are semantically different and I don't process english precisely enough to see the difference without specifically concentrating on it.
That brings the total to like 10 questions out of the entire pool that I have to memorize instead of working out the math for.
@tek_dmn Peak-to-peak voltage is twice the peak voltage. Peak-to-peak is measured from the bottom of the trough of a sinus wave
to the crest of the sine wave. So if the sine wave "swings" from -10V to +10V, then the peak-to-peak voltage (Vpp) is 20V.
Peak voltage (Vp) is measured from zero to the (positive) peak of a sine wave, which would be 10V for the above mentioned sine wave.
I hear ya, English is not my native tongue either. It's perfectly fine to memorize answers!
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