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 Hallicrafters SX-71 problem with A N L Circuit

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stareagle
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Join date : 2012-12-17

PostSubject: Hallicrafters SX-71 problem with A N L Circuit   January 17th 2013, 9:18 pm

Well the SX-71 is operating pretty well now, S meter and all! But when I engage the noise limiting circuit, it seems to lower noise level but the sound gets somewhat distorted. I have replaced the electrolics and paper caps along with a few resistors that were bad. I also replaced the output transformer which was a 500 ohm and 3.2 ohm CT. I used two transformers with the proper primaries for the 6K6 and 500 & 3.2 out. The 500 ohm transformer is rated for 10 watts which I beleave the 6K6 is not capable of but I don,t think this could cause a problem with the noise limiter circuit? Any ideas? Thanks in advance. Smile
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Cliff Jones
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Join date : 2010-11-22

PostSubject: Re: Hallicrafters SX-71 problem with A N L Circuit   January 17th 2013, 9:35 pm

I wouldn't do anything further, That is normal for ANL.
Here's a good explanation on this link.

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stareagle
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PostSubject: Re: Hallicrafters SX-71 problem with A N L Circuit   January 18th 2013, 10:22 am

WOW! I read the article and never knew this. I will leave things where they are. Thanks again
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Cliff Jones
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PostSubject: Re: Hallicrafters SX-71 problem with A N L Circuit   January 18th 2013, 3:14 pm

Glad to advise, 73s

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