Choosing the Right Coaxial Cable for Internet Connection: Speed & Outdoor Usage - sebaele22 Inquiry

Yes—the cable mainly affects attenuation and signal quality, so use a proper 75-ohm SAT antenna coaxial cable with good F connectors; a 40 m run can work, but the modem’s signal levels are what really matter [#6207187][#6210020] If you only move the modem and connect one computer, a typical SAT cable is enough, with F plugs and a barrel for joins [#6207187] Check the modem at 192.168.100.1 and look at Receive Power Level, Transmit/Upstream, and Downstream values; around -15 dB receive was said to be acceptable, while -19 dB was already too low for extending the line further [#6210020] The return channel should stay below about 58 dB; up to 60 dB may still work, but it is considered an extreme level to avoid [#6252063] Later, a Receive Power Level around +6 dBmV was considered OK, and if the values stay in range you should not worry [#6249867][#6863063] If the readings worsen after replacing the cable, the cause may be the new cable’s electrical parameters, bad plugs, or a network/frequency change rather than the coax itself [#6860207]