https://nationalradioclub.org/QSLs/Geary/Police/geary-Police-NY-New_York_Fire_Dept.pdf
- 2 pages
1630 kc - land side
35.58 Mhz - ship side - (apparently the card had been printed as ?
35.60 ? ship side but was corrected by hand to 35.58)
openness - obviously the radio channels were not considered to be top
secret - even at the height of World War 2
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