RG6 Cable

mike-s wrote:

Tom_M wrote:

mike-s wrote:
But if you really want to waste your money, you want hardline or LMR-600.

LMR-600 is 50 ohm and can not be used. RG-11 is quite a bit thicker than RG-6. RG-6 will work fine.

You don't know what you're talking about.

Mike-s, YOU don't know what YOU are talking about.

LMR-600 SPECS states that it IS 50 ohm (FIFTY OHM) coax.

RG-11 IS BIGGER than RG-6 AND RG-6 should be FINE for Satellite LNB runs up to at least 100 ft.

Granted, RG11 does have much less loss than RG-6 so in some respect and depending on how good of view your dish has might work a bit better if you have some trees infringing on your view or terrestrial point to point microwave relays close to your dish path..

I used to work for a "C" band (big dish) installer many years ago, often ran about 100 to 150 ft of dual RG-6 swept tested for Sat installs.. Never had any issue getting it to work.

Only a couple of times we needed to use RG-11, had a couple of installs that were 200-250 ft, to get a good view of the southern sky..

By the way, last time we used LMR-600 would have been for the first gen C band dish when they used a separate LNA and down converter. LNA mounted on the feedhorn, ran 8ft of LMR-600 through the feed horn hook to the back of the dish then mounted the down converter there..

And YES, the LNA output was 50 ohm, and the down converter input was 50 ohm, so you used 50ohm coax for that connection.. From the block converter AND more modern LNB the output IS 75 OHM...

For Dish or Direct mini dish systems the LNB output IS 75 OHM and the receiver block input IS 75 OHM..

Using 50 OHM coax is not going to kill things but will present an impedance mismatch which may drastically reduce the performance of the receiver.. Basically counter productive.