jarek7714 wrote: U-IDU is equipment addressed to CP customers with the possibility of easy connection to the existing DVB-S / S2 installations, without the use of additional cables (effective / better for close proximity to modem-routers when we do not use external antenna installations),
The idea was interesting, it was probably mainly about taking the modem to the mast to catch the levels without building a special LTE antenna installation and combining it with the existing TV / SAT cabling, so as not to lay another cable (twisted pair), or possibly pull a relatively cheap TV / SAT cable.
In addition, the idea was probably the use of 75 ? coaxial cables (TV / SAT), because for one thing, practically everyone is familiar with such cables, and two of them are armed with connectors (F) in the simplest case, without any specialized tools, so even the proverbial housewife could set up such an internet.
That is, as simply as possible, reasonably cheap, without any specialist knowledge, with a high chance of obtaining some transfers - maximum availability for the less wealthy part of the society, thus not having some very exorbitant transfer needs.
Simple and uncomplicated commercial thinking (catch as many subscribers as possible), which has resulted in all the rest.
Actually, for me, the idea is not stupid. Execution - well ...
jarek7714 wrote: and in the case of the H-155 / its Chinese counterparts with "copper" without copper they practically kill the gain of the external antenna used.
No.
The attenuation of a coaxial cable depends mainly on two factors, and not on "copper":
1.Dimensions
2. type of dielectric.
On the other hand, "copper", in other words CSS and derivatives, are mainly reliability issues.