I am an idiot. Yep, it is confirmed. I've spent a lot of spare time in the last 2 months getting a hi-impedance analog meter suitable for aligning a radio's intermediate frequency.
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And I have a perfectly good HP 400E AC voltmeter, response +/-10% full scale 10Hz to 10MHz. I've had this meter for 40+ years, use it several times a week to measure the audio, 10Hz to 20kHz, levels in various audio systems.
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And 2ish months ago I needed a high impedance analog meter, the 400E has an input impedance of 10 meg.
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And I never considered I could use this meter for aligning a 455kHz IF strip!
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Argh...before going to a lot of trouble searching for the proper piece of equipment ... stop and think about your task and what equipment you have.
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I could even have used my oscilloscope, but no I had to do it the hard way because I became fixated on "I need a high impedance, wide range, RF voltmeter."
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Well at least I now have a nice Simpson DVM with analog sub-meter and a nice Heathkit FET "VTVM" [their label, to me a VTVM has a vacuum tube] And I've learned an valuable, if embarrassing lesson.?
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Can't wait to share this with the SWL club. They can use a good laugh.
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