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Post by Boomer on Jan 9, 2020 8:34:08 GMT
That is my every day AM stereo tuner, hooked to an auxiliary input on my TV's home theater receiver. Not the best place, because it picks up noise from the other components, but it works. Best would be to use it with an older stereo with analog components.
Not bad, more than I'd pay since it was $60 US originally, but then I'm cheap. It uses the original Motorola decoder chip, so it's good for local signals in day time. At night you'd want to switch to mono for weaker or distant listening, since it will have platform motion in the sound.
Newer decoders are designed to have less platform motion, and to blend the stereo channels like FM does on weaker signals. I kind of like the old chip because you may have more audible effects on weaker signals, but you know you're always in full separation.
I did a few modifications to my TM-152 for better sound, ask about it if you need them and I'll post.
Boomer
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Post by thelegacy on Jan 10, 2020 6:54:33 GMT
I recently got me a Sony SRF-42 C-Quam AM stereo Walkman which of course has FM as well it has the Motorola chip that only decodes C-Quam and goes all the way up to 1700 out of the box. This Walkman I used to connect into a boombox or sound system to monitor my station and it does a good job.
I'm noticing more and more AM stereo receivers on eBay with your in great condition so I assume there is someone out there refurbishing these and selling them. Keep your eyes peeled there are some good receivers out there.
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Post by Boomer on Jan 10, 2020 23:12:42 GMT
SRF-42
Hi Legacy, I have an SRF-42 Walkman also, a late model budget Sony, also in Radio Shack's branded product line too. It has AMAX features, and I think the third version of the decoder chip is used.
It works on AM stereo well enough, but I don't like how it tunes, where the decoder is active on every station, stereo or not, that makes it harder to zero in on a station. What I do is tune with the switch in mono, center the signal, then switch to stereo. The Realistic tuner in Mark's post tunes in like FM stereo does on an analog radio, muting stereo while tuning and for a few seconds after a station is tuned in then stereo pops in if a station is stereo. I like that behavior better.
With AMAX, the sound is crisp and smooth on the SRF-42. Hash noise from DTV transmissions can be heard in my high RF environment, which happens on many cheap radios.
Boomer
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