FM tuner fans, somebody get this!

I love my McIntosh mx110z, Tube Tuner/Preamp, awesome FM and Phono sound.

If I was robbed, I would get another without hesitation.

Most people have never heard truly great FM.

Richard Modafferi, famous McIntosh Tuner designer

https://spectrum.ieee.org/consumer-electronics/gadgets/the-consumer-electronics-hall-of-fame-mcintos...

said there was NOTHING he could do to improve the FM in the mx110z.

"mx110 FM Tuner (and some Richard Moderaffi unofficial history).

When operating to spec, the mx110 tuner section is superb. McIntosh engineer (way back then) Richard Moderaffi (who originally designed the MR77 & MR78 tuners) (performs modifications on McIntosh tuners) said there is nothing he could do to improve upon the original design of the mx110 tuner section. It was (and still is) that good."

I've got a Fisher FM80 Mono FM tuner from 1958 downstairs

http://www.fisherconsoles.com/non%20console%20manuals/fisher%20fm80%20om.pdf

And a multi-plex adapter somewhere, also Fisher I think

And the matching Fisher AM 80 Mono AM Tuner 

https://worldradiohistory.com/hd2/IDX-Audio/Archive-High-Fidelity-IDX/IDX/50s/High-Fidelity-1956-Sep...

the 1958 Fisher President II Console they came from featured 'Live Binaural Radio'.

1st tune CBS FM Mono for live mic left side of stage. Next tune CBS AM Mono for live mic right side of the stage.

Move the center Control selector to 'Stereo Radio', presto, dual mono binaural radio.

http://www.fisherconsoles.com/President%20II.html

Shortly afterwards, armstrong came out with FM multiplex 

Haven't played them in over 20 years.

Early Live Stereo Radio

I never researched it, I just jumped about, it seems it started in 1924 as AM Stereo, two AM tuners, two AM stations to two mono amps ..

Then RCA (others?) tried AM/FM Stereo Broadcast early 50's, then FM Multiplex. 

History[edit]

Early experiments with stereo AM radio involved two separate stations (both AM or sometimes one AM and one FM) broadcasting the left and right audio channels. This system was not very practical, as it required the listener to use two separate receivers. Synchronization was problematic, often resulting in "ping-pong" effects between the two channels. Reception was also likely to be different between the two stations, and many listeners used mismatching models of receivers.

After the early experiments with two stations, a number of systems were invented to broadcast a stereo signal in a way which was compatible with standard AM receivers.

FM stereo was first implemented in 1961. In the United States, FM overtook AM as the dominant broadcast radio band in the late 1970s and early 1980s.

Timeline[edit]

• 1924: WPAJ (now WDRC (AM)) broadcast in stereo from New Haven, Connecticut, using two transmitters: one on 1120 kHz and the other on 1320 kHz. However stereo separation was poor, to preserve compatibility for mono listeners.[1]
• In the 1950s, several AM stereo systems were proposed (including the original RCA AM/FM system which later became the Belar system in the 1970s) but the FCC did not propose any standard as AM was still dominant over FM at the time."

...........................................
AM Stereo still exists

https://en.wikipedia.org/wiki/AM_stereo