I've heard good things about the AM Stereo Delco radios from the 80s-90s or so, but don't remember actually experiencing one. Anyone know anything about the performance of those?
Also, are there any car radios that, as set up from the factory / with the supplied antenna, are...
A - sensitive enough to get (1) full quieting (crank up volume so program is painfully loud, then during non-modulation NO noise would be audible even in an anechoic chamber) or (2) full HD decode (if it had that capability) on a signal that would be too weak to detect as a QRSS CW or PSK31 signal on something like an Icom, Perseus, etc. with a full-wavelength beverage,
B - selective enough to get a threshold fringe signal on a first-adjacent to a strong local that would splatter all across the LW, MW & SW bands on a SiLabs DSP radio (with no antenna hooked up to that DSP radio),
C - with audio quality that would make an untuned crystal set seem like a bad cell phone connection,
D - with overload resistance so that a signal that would completely overwhelm a Perseus, Icom, Drake, etc. with no antenna would be no problem for this automotive radio?
Ok, so I wouldn't expect one to be quite *that* good, but aren't good car radios supposed to be leaps and bounds better than home units? :p
Or on the other hand, is it possible that some of the not-so-good car radios out there are so poor they'd make a $5 Coby pocket radio seem like a high-end multi-hundred-thousand-dollar-cost-to-factory-per-electrical-component rig with a longwire antenna?
The Delco stereos were wonderful. I sometime had Cadillac rentals and CQUAM AM steros were wonderful.
Late 80s GM car radios weren't bad at all.
The IF bandwidth got cut on all the others somewhere in the early 90's and they were were awful ever since.
Any car radios that will do waht you'd like?
No, and such selectivity only comes with double/triple conversion of IF frequencies.
C is contradictory with most other wishes.
D is makes demands upon the complexity of other circutiry beyond what is consumer-oriented.
For A and B, the best car raidio I ever encountered with stereo FM was the Blaupunkt Richmond (1983).
Everything in your wish list negates the crystal-clear reception you enjoy from simple crystal radios.
All signal manipulations and shaped responses degrade the purity heard in a simple crystal receiver.