Q. What is the difference between a TMA and a MHA?
A. These are two names for the same thing – ‘Tower Mounted Amplifier’ and ‘Mast Head Amplifier’. This is a low noise amplifier which is situated as close as possible to the antenna, and which improves the overall sensitivity of the system (i.e. it enables the system to successfully process weaker received signals than without a TMA). The benefit is either increased cell coverage area, or increased throughput for the same cell size.
Q. What is the difference between a quadruplexer and a QPV?
A. A quadruplexer is one of a family of ‘multiplexers’ which split one RF path into ‘n’ paths with different frequency bands. A diplexer has two paths, triplexer three paths, quadruplexer four paths, pentaplexer five paths etc… The acronym ‘QPV’ stands for ‘QuadruPlexer Variant’ and is a term that is only used within Radio Design – it is not an ‘industry’ term.