It is quite likely that LF frequencies were used by the tower at the time, as this was more or less common at the time...internationally, and in the USA.
For example, many towers broadcast ATC on 200-340 Kc.
IF LF was not usable, due to thunderstorms in the area, then HF would be a standard alternative, in the era.
At many airports, especially overseas and in underdeveloped nations, VHF was not widely used, in the late forties.
The normal range of the 749 Constallation was approximately 2000 nautical miles, with a standard passenger payload.
These airplanes, unlike the later Constellations, did not have the CurtisWright turbocompound engines, hence were not able to cruise ultra long range.