Cable Losses

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#1
Hi out there,
I have about 25 mtrs of RG6 feeding my pc sat card, is it worth replacing with
CT100 to get a better signal or not.
Thanks
 

rolfw

Believe it when I see it Admin.
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My Satellite Setup
Technomate 5402 HD M2 Ci, DM7000s, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Promax HD Ranger+ spectrum analyser.
My Location
Berkshire
#2
There appear to be different versions of RG6, but if it is one of the double screened versions, you would possibly gain a couple of DB from a swap, but not much more.
 
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#3
rolfw said:
There appear to be different versions of RG6, but if it is one of the double screened versions, you would possibly gain a couple of DB from a swap, but not much more.
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
Regards
 
H

Happy-Buddah

Guest
#4
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.

Coincidence, luck or what?
H-B
 

rolfw

Believe it when I see it Admin.
Staff member
Messages
37,671
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1,279
My Satellite Setup
Technomate 5402 HD M2 Ci, DM7000s, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Promax HD Ranger+ spectrum analyser.
My Location
Berkshire
#5
At the higher frequencies, you could lose 10db over 30 metres of Coax perhaps only four or five at lower frequencies, I wouldn't rely on the readings from a satellite receiver though.
 
H

Happy-Buddah

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#6
Nice sunny day, up to the attic and dust off the old SA rectum paralizer and have a play, that's if the bottles have not died.

H-B
 

Llew

cerca trova...
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My Satellite Setup
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+
My Location
The Flatlands of East Anglia
#7
At least once it's warmed up it'll defrost your hands :D

Llew
 
H

Happy-Buddah

Guest
#8
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.
H-B
 
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