RG6 cabling verus RG58

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Macusers
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RG6 cabling verus RG58

Post by Macusers »

I currently have RG6 cabling running to a yargi antenna (30ft). Is there a difference between running rg6 or rg58 cabling. is one better than the other?

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Murphy625
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Re: RG6 cabling verus RG58

Post by Murphy625 »

Aren't those 75ohm cables? I thought all the cellular stuff required 50 ohms?
Macusers
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Re: RG6 cabling verus RG58

Post by Macusers »

Yes RG6 is 75 ohm with lower loss. Which was why i was asking. Im using it with a weboost and was going to connect it directly to a netgear nighthawk. So what issues will you have if you use rg6?
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Re: RG6 cabling verus RG58

Post by gscheb »

Yes it is far from ideal to have 75 ohm cables running to it.
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Didneywhorl
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Re: RG6 cabling verus RG58

Post by Didneywhorl »

Make sure the booster is made for connecting directly to a modem or you will blast your hotspot.

The cabling can be 75Ohm for booster systems made for them, but there are no cellular modems or hotspots that I have ever seen that use 75 Ohm. The main reason being the power rating.

Higher ohm cabling creates a higher inductive reactance (sort of like simple electrical resistance), thus creating a greater gain loss, nullifying the point to adding higher gain antennas. The booster systems work with these as they are designed for it, end to end, and can deal with it even when not because they basically brute force amplify the signal anyway. This is why they also get away with using 50+ feet of cheap cables.

Your main things to look for when connecting to a cellular hotspot or modem is 50Ohm cables, as low loss rated as possible per your budget, and as short of cables as possible.
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Re: RG6 cabling verus RG58

Post by Murphy625 »

Some of the cellular bands operate above 1 Ghz.. I know B66 is in the 1.7 Ghz range.. You need a good cable for that.. LMR400 would be a good choice..
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Re: RG6 cabling verus RG58

Post by Adm1jtg »

The main issue is that rg6 and rg58 have huge signal loss compared to lmr400. In a worst case scenerio based on the linked calculator @100 foot cable length:

https://www.qsl.net/co8tw/Coax_Calculator.htm

lmr400 @ a frequency of 2100 which is band4/66 frequency for downloads you would lose about 6db on rg58 you would loose a whopping 26db.
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Re: RG6 cabling verus RG58

Post by Dr-BroadBand »

The problem with booster are the also Amplify the noise so you’re Signal to noise ratio sucks.

Would be better to put your money in good quality cables and antennas.

It would be helpful if you shared your Signal numbers.
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