Thanks for the info rolfw, this rg6 is cheap stuff with the silver plastic aluminium
coated foil as a second screen. there is no makers name, but the info on the
roll is"RG6U Satellite cable 75 ohm UHF 0.78mm2
Either I'm dead lucky or there is a load of "old crap" stated about cables.
I have 30m of the "B&Q" sat cable, 2 co-ax switches, 2 back to back "F type" connectors, feeding into a Technomate TM-5000DA receiver from a 1m dish a 0.3dB Golden Interstar lnb and a Moteck SG-2100 motor. I tried a 4m length of CT100 (copper foil) straight from the lnb to the receiver (on top of my conservatory next to the dish & motor), not a blind bit of difference in strength or quality levels across the satellites that I can receive.
Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
Well the Scientific American rectum paralizer is well and truelly paralized (dead). Cannot get any bottles for it, mind you it was second hand in 1971 when i bought it.
I must bow to Rolfw's statement though. Looking at a weak satellite today, Nilesat I have noticed a slight difference in levels between the 10m feeder and 30m feeder. It's logical I suppose, the longer the feeder the higher the loss.