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Model 90 1st RF question
#5

Thanks for the feedback. I've learned through recent experience that a coil that shows continuity on an ohmmeter does not necessarily mean it's good. I had a similar problem with my recently completed 48-482: OK reception on the AM band, but not nearly as good as a radio with 3 IF amplifiers should have, so I tested everything again, and every one came up solid. My only clue was that when adjusting the IF padders during alignment, the 2nd primary made no difference no matter how tight or loose I adjusted it. Luckily, John Kendall had just the replacement can I needed, so when it arrived, I swapped it in immediately and voila! Sweet, strong reception all up and down the band, even though the original tested fine.

So I'm very anxious to test the improvised RF primary, as well as running through all the voltage tests on that stage, this weekend. Results to follow...


Messages In This Thread
Model 90 1st RF question - by mgutierres - 03-18-2011, 11:26 AM
RE: Model 90 1st RF question - by brett2752 - 01-28-2024, 03:27 PM
RE: Model 90 1st RF question - by Chas - 01-28-2024, 05:51 PM
Re: Model 90 1st RF question - by Ron Ramirez - 03-18-2011, 12:36 PM
Re: Model 90 1st RF question - by 7estatdef - 03-18-2011, 05:18 PM
Re: Model 90 1st RF question - by Steve Davis - 03-19-2011, 06:08 PM
Re: Model 90 1st RF question - by mgutierres - 03-23-2011, 09:01 PM
Re: Model 90 1st RF question - by 7estatdef - 03-24-2011, 01:10 PM



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