THE signals from a very-low-frequency transmitter such as GBR (Rugby) operating at a frequency of 16 kc./s. are normally propagated beyond the range of the ground ray by reflexion between the D ...

Continental Electronics Corp.,* Dallas, Texas, is being awarded an $11,428,777 indefinite-delivery/indefinite-quantity, firm-fixed-price contract for replacement of ...

Three tall radio transmitter towers rising to a height ... when the Indian Navy completes building the strategic Very Low Frequency Station (VLS) providing vital communication link for the ...