i just purchased the rooftop antenna and well this not came with instructions of how to install or the needed things to secure to the roof, in fact just come the antenna in the box and nothing else.
i wish to know what things i need to install an rooftop antenna in the roof or to an wall, i been looking up in google but not get any website that be straightforward and just the sites that found made refererence to the simple part of secure the antenna to the mast.
yesterday i did test of location in the second floor in a place where have partially LOS till the San Cristobal Hill, the channels works ok, except by the channel 28 at the frequency 557143 that according with Chilean websites they are working in a low power broadcast, it is possible get that channel without problems even if they use low power to broadcast?
according with my location test is 3 possibles locations where can get not problems and one with problems, locating the antenna with the largest element pointing to the transmitter that position cause problems with the channel 28 , the others locations just works fine .
have another question about amplifiers and pre amplifiers, for what can be used an pre amplifier and an amplifier, and is there Db numbers mean more amplification or more noise added to the line ?
well any reply will be appreciated