The field of radio science is continuously working on enhancing the capability to predict longwave propagation, a critical aspect for reliable long-distance communication systems. Longwave radio signals, which operate in the low (LF) and very low frequency (VLF) bands (3-300 kHz), are known for their ability to diffract over obstacles and travel beyond the horizon, following the Earth's contour. This ground wave propagation mode is less affected by ionospheric disturbances compared to higher frequencies, making it highly stable. The Earth-ionosphere waveguide, a natural phenomenon, facilitates the efficient propagation of these long radio waves over global distances. Accurate prediction of how these waves propagate is essential for designing and analyzing longwave radio links, as well as for applications in navigation systems, global communication, and remote sensing of the lower ionosphere. Scientists develop and refine ionospheric models to anticipate the ionosphere's impact on these telecommunication systems. The integration of international reference models is a key strategy to improve the accuracy of these predictions. For instance, the Long-Wavelength Propagation Capability (LWPC) code is a well-known model, and new software like LongwaveModePropagator.jl is emerging to offer more robust mode-finding solutions. Such advancements are particularly relevant for countries like India, which explores longwave radio technology for a National Centre of Dissemination (NCD) to alert and instruct the public during large-scale emergencies or natural disasters, given its nationwide reach and resilience against ground-based phenomena. Indian researchers also contribute to modeling long-path propagation characteristics, particularly in regions like the Antarctic. Therefore, enhancing these prediction capabilities is a significant scientific endeavor with direct practical implications for public safety and telecommunications infrastructure globally and within India.