[Chuck Schwark]

Just saw your comment Ron on the RMS Yearbooks and RP models and happend to have
one out in my hands and pulled the others from the shelf. Here you go.

Looks like the first model introduced was tuned to 1500 kc. but subsequent models and years were
designed for the low end of the AM band.

Chuck
-------------------------------------------------------------------------------------

Taken from the 1939, 1940, and 1941 Philco RMS Yearbooks.
Philco "RP" wireless broadcasting record players:
Frequency ranges in kHz (KC)

1939
RP-1, Code 121 - 1500
RP-1, Code 122 - 540-580
RP-2 - 540-580
RP-3 - 530-580

1940
RP-1, Code 123 - 530-580

1941
41-RP-1 - 530-580
41-RP-2 - 530-580
41-RP-5 - 530-580
41-RP-6 - 530-570
41-RP-15 - 520-850