LT is Lafayette assembled.
KT is a kit.
LT-50 was stereo via simulcast (FM and AM simultaneously used for left/right channels), it was available through at least 1960.
LT-50A was stereo via the newly standardized multiplexed FM stereo system (GE-Zenith), so it supported a MPX output for an external adapter. It was introduced in early 1961.
The simulcast feature is why many tuners of the time had independent AM and FM tuners.
Next time you hear that government regulation is bad, for the counter-argument point to AM-FM simulcast and the RCA color wheel for television. Can you imagine the size of a color wheel for a 26 inch television? If that bearing seized the wheel would either explode (if glass) killing everyone in the room, or (if metal) would launch itself through the cabinet.
Plus AM stereo, where the FCC's refusal to make a decision (Regan deregulation) in favor of reliance upon the marketplace to decide actually destroyed the market. Multiple competing, and incompatible, systems were introduced, radios supported none or a few, and it never took off. This was a conspicuous failure in regulatory authority and a breach of its duty to act.
KT is a kit.
LT-50 was stereo via simulcast (FM and AM simultaneously used for left/right channels), it was available through at least 1960.
LT-50A was stereo via the newly standardized multiplexed FM stereo system (GE-Zenith), so it supported a MPX output for an external adapter. It was introduced in early 1961.
The simulcast feature is why many tuners of the time had independent AM and FM tuners.
Next time you hear that government regulation is bad, for the counter-argument point to AM-FM simulcast and the RCA color wheel for television. Can you imagine the size of a color wheel for a 26 inch television? If that bearing seized the wheel would either explode (if glass) killing everyone in the room, or (if metal) would launch itself through the cabinet.
Plus AM stereo, where the FCC's refusal to make a decision (Regan deregulation) in favor of reliance upon the marketplace to decide actually destroyed the market. Multiple competing, and incompatible, systems were introduced, radios supported none or a few, and it never took off. This was a conspicuous failure in regulatory authority and a breach of its duty to act.