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What class amp is a Zetagi b300p?

Damo666

Member
Jan 10, 2009
50
0
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Hi. I've just picked up a b300 for a pittance and repaired it. I have a query ; What class amp is it? I think it's a class c but with some feedback from collector to base. I ask, as i had a Zetagi b150 that just didn't sound at all well on ssb due to it being class c which is only suitable for am/fm. My main aim is to use it on ssb in the hope that it sounds significantly better than the b150 variant. Here is the schematic - http://www.cbtricks.com/Amp/zetagi/b300p/graphics/zetagi_ b300p_sch.pdf. Opinions if you would please. Regards.
 

damo666,
b300's are crude class AB, they usually sound ok on ssb, the b150 is class c and sounds distorted.
 
Hi Bob85. Thanks very much indeed for the reply. I noticed the schematic was somewhat different than the b150, and that's good. On this note i look forward to getting myself another ssb transceiver in the hope that my audio is now decipherable. Cheers and best regards.
 

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  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
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    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
  • @ heartbreaker3473:
    Okay, sorry, will put in a forum
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    I put it in the general disscution help area and started a new thread. Thank you for letting me know.