It's usually the other way around class c for am and class ab for usb/lsb in a mobile cb unit. Best I know of anyway
Opinions/Radio for a DX1600X
Discussion in 'CB Radio Forum' started by bored silly, May 20, 2017.
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A liner Class C amp is an oxymoron.
Class C amps are non-liner by definition. They work well for CW and FM and are more efficient than a class A or A/B amp but should not be used for AM/SSB.
For AM/SSB a class A or A/B should be used to prevent spattering.
https://en.wikipedia.org/wiki/Linear_amplifier
http://www.electronics-tutorials.ws/amplifier/amplifier-classes.html -
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bored silly Thanks this.
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General HP 40 has a carrier of 30 watts and pep of 120 watts, it may match up good.
bored silly Thanks this. -
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Or a Stryker 497
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The same class of amplifier works for ether AM or SSB (USB/LSB) as the sideband modes are just a hybrid of an AM signal (remove the carrier and one of the 2 sidebands of an AM signal). Enter a Class A or a Class AB amp will work fine for ether AM or SSB modes.
Because a Class C amp is non-linier it will cause distortion on any mode that modulates the amplitude of the carrier. CW has no modulation and FM modulates the frequency not the amplitude of the carrier so a Class C amp works fine for them but not for AM or SSB. -
CW Spook Light Load Member
Ubu is correct, and I misspoke. Class C is for CW and FM. Actually, there is a way to make Class C work for an amplitude modulated signal, but I don't believe it's ever been implemented commercially. That said, traditionally, the way to get a high power AM signal was to modulate the base signal with a high power audio signal, e.g., a pair of 811's in the final for 500 watts, modulated by a pair of 807s with about 100 watts of audio.
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