[time-nuts] RG 6 U couplings

EWKehren at aol.com EWKehren at aol.com
Sat Dec 5 18:23:33 EST 2015


Thank you all for the information, worse case I look at 70 feet with two  
couplings all in an inaccessible attic. The cable is quality but vintage 
1989.  Part of an extensive cable TV wiring. So far nine with two I am not able 
to  locate the other end.The way they are installed I am not able yet to use 
one of  them to pull a new one in.
Twenty years ago I probably would have risked crawling in there. Don't want 
 to fall 16 feet at age 73.
Bert Kehren Palm City .
 
 
 
In a message dated 12/5/2015 5:11:01 P.M. Eastern Standard Time,  
magnus at rubidium.dyndns.org writes:

Bert,

Extending the RG-6U using N-connectors should not be  giving you more 
than 0.20 dB, probably less. Considering that you have  have 6.12 dB per 
100 feet in RG-6U at 1 GHz (should be about 8 dB @ 1.575  GHz), so it 
will be more. Using N-connectors to extend the cable-stretch  isn't going 
to be a major issue, it may be the cable length that could  present an 
issue.

I've been fighting these issues, and used too long  cable at hand (RG-58 
is a terrible choice but was lying around at the  time). I use LMR-400 
these days, giving me about 5.1 dB per 100  feet.

If cable and connector damping causes you harm, then consider  installing 
an additional LNA inline with the antenna.

Hope it sort  itself out for you.

Cheers,
Magnus

On 12/05/2015 09:28 PM,  Bert Kehren via time-nuts wrote:
> At my new home the GPS antenna  location has turned in to a  challenge.  
May
> have to splice  RG 6U. Has any one done measurements on  couplings and the
> loss  associated with them. Right now I am considering a  female,  female
> coupling. Is there a better alternative?
>  Thanks   Bert Kehren Palm City  Fl.
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