Could be, see previous post.So, late 30s it aint.
TV channel 1 and Armstrong low-band FM radio coexisted for most of their life. In 1937, "Apex" radio (originally AM, but soon beginning FM) was allocated 41 to 44 MHz while TV channel 1 was allocated to 44 to 50 MHz. In 1940, the FCC moved FM radio to 42 to 50 MHz and TV channel 1 to 50 to 56 MHz.A few mfgrs offered radio receivers for the Armstrong FM system frequency range, and later postwar, both FM broadcast ranges (notably Zenith) before Armstrong surrendered his frequency allocation for television channel 1, tho' never utilized.
Thnx!TV channel 1 and Armstrong low-band FM radio coexisted for most of their life. In 1937, "Apex" radio (originally AM, but soon beginning FM) was allocated 41 to 44 MHz while TV channel 1 was allocated to 44 to 50 MHz. In 1940, the FCC moved FM radio to 42 to 50 MHz and TV channel 1 to 50 to 56 MHz.
In 1946, FM was reallocated to 88 to 108 MHz and TV channel 1 was moved back down to 44 to 50 MHz, but as of 1947, 25 stations were still on low band FM, in 1948 channel 1 was removed from the TV band and reallocated to other services, and in 1949 Armstrong obtained legal permission for his station to remain on the low band, which it did until shortly after his death in 1954.
Today WA2XMN has a special license from the FCC and is allowed to make periodic broadcasts from the Armstrong tower on 42.8 MHz.
TV, yes.Not FM and TV with the Stromberg Carlson brand.
FM no.
Taken from the link you provided:
This Stromberg Carlson model 435M was made just after the band was set to 42-50 mhz.
vwestlife posted:
In 1940, the FCC moved FM radio to 42 to 50 MHz
Which means that a Stromberg Carlson sign which features FM and TV was unlikely to be from the late 30s.