The Hallicrafters SX-28
Yesterday the SX-88 was mentioned as a 4-gang type of receiver, here are the dual 4-gang tuning caps, main tuning and bandspread:
But the SX-88 wasn't that popular, however the Hallicrafters SX-28 was also a 4-gang general coverage receiver but thanks to World War II tens of thousands were sold. And as can be seen in this photo from the manual
there are the four ganged caps but (similar to the SX-88) some of the caps have multiple sections - the complexity boggles the mind !
Also per the wiki:
https://en.wikipedia.org/wiki/Hallicrafters_SX-28
one famous listener to the SX-28 was President Truman in the Oval Office ! It is on that little table below the other table behind the Truman desk:
But the SX-88 wasn't that popular, however the Hallicrafters SX-28 was also a 4-gang general coverage receiver but thanks to World War II tens of thousands were sold. And as can be seen in this photo from the manual
there are the four ganged caps but (similar to the SX-88) some of the caps have multiple sections - the complexity boggles the mind !
Also per the wiki:
https://en.wikipedia.org/wiki/Hallicrafters_SX-28
one famous listener to the SX-28 was President Truman in the Oval Office ! It is on that little table below the other table behind the Truman desk:
The SX-28 was arguably the best general coverage receiver during World War II, so why not the best for the President ? :)
Truman photo sources:
1946 https://www.trumanlibrary.gov/photograph-records/73-2306
1947 https://www.trumanlibrary.gov/photograph-records/82-54-121
may 23 1949 https://www.trumanlibrary.gov/photograph-records/73-3048
It's interesting that after a long period of no-tune type of input filtering for receivers some current higher end rigs like the IC-7610 have tracking preselectors that are relay tuned automagically as the frequency is changed !
Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm
Truman photo sources:
1946 https://www.trumanlibrary.gov/photograph-records/73-2306
1947 https://www.trumanlibrary.gov/photograph-records/82-54-121
may 23 1949 https://www.trumanlibrary.gov/photograph-records/73-3048
It's interesting that after a long period of no-tune type of input filtering for receivers some current higher end rigs like the IC-7610 have tracking preselectors that are relay tuned automagically as the frequency is changed !
Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm
