Post by Steve on Jan 28, 2023 17:37:15 GMT 12
So, while reviewing my text in the info chapter, I started to doubt the semi-bandspread term... was it used back then? I can't help thinking I've seen it, but then I can't find it either.
The common reference I remember seeing was that the model 66 dual-wave was a semi-bandspread set. But the advertising and schematic call it bandspread. Its short wave range was roughly 9.5Mc/s - 15.5Mc/s
Compare that to the model 75 of the same year, for example, and to cover the 66's short wave band you'd need three separate model 75 bands
But compare it to an earlier set, like the 1937 model 38 and the nearest band is 9-18Mc/s, not too far removed from the 66's. Does the 66 really qualify as bandspread, or even (if its actually a thing) semi-bandspread?
Skip forward a few years to 1947 and the model 44 - it has a band from 9.5-12Mc/s, then another one from 15-18Mc/s - the documentation only calls these short wave bands and makes no mention in advertising or otherwise of the term bandspread - yet this seems to lay more claim to the 'semi-bandspread' name than the 66...
Actually, skip back to 1941 again - the model 69 had exactly the same three bands as the later model 44, and was referred to as a bandspread receiver in technical literature - but John Stokes called it a sem-bandspread set in MGAR (p121, bottom right corner).
So, can anyone elaborate on the term, its use, and/or its origins? I found reference to it in an advert for Corsair Radios (Westonhouse) in 1946, claiming the model 126 was semi-bandspread. Westonhouse's own service data states 'bandspread', even though the SW bands were 6-10Mc/s and 11-16Mc/s - better than the old bands but not much. Certainly not what I would call bandspread, and I'm sure it gave the engineers at Radio Corp a good laugh.
The common reference I remember seeing was that the model 66 dual-wave was a semi-bandspread set. But the advertising and schematic call it bandspread. Its short wave range was roughly 9.5Mc/s - 15.5Mc/s
Compare that to the model 75 of the same year, for example, and to cover the 66's short wave band you'd need three separate model 75 bands
But compare it to an earlier set, like the 1937 model 38 and the nearest band is 9-18Mc/s, not too far removed from the 66's. Does the 66 really qualify as bandspread, or even (if its actually a thing) semi-bandspread?
Skip forward a few years to 1947 and the model 44 - it has a band from 9.5-12Mc/s, then another one from 15-18Mc/s - the documentation only calls these short wave bands and makes no mention in advertising or otherwise of the term bandspread - yet this seems to lay more claim to the 'semi-bandspread' name than the 66...
Actually, skip back to 1941 again - the model 69 had exactly the same three bands as the later model 44, and was referred to as a bandspread receiver in technical literature - but John Stokes called it a sem-bandspread set in MGAR (p121, bottom right corner).
So, can anyone elaborate on the term, its use, and/or its origins? I found reference to it in an advert for Corsair Radios (Westonhouse) in 1946, claiming the model 126 was semi-bandspread. Westonhouse's own service data states 'bandspread', even though the SW bands were 6-10Mc/s and 11-16Mc/s - better than the old bands but not much. Certainly not what I would call bandspread, and I'm sure it gave the engineers at Radio Corp a good laugh.