[time-nuts] RG 6 U couplings

[J. L. Trantham]

Bert,

I'm suspect you already know this but, depending on the age of the installation, the outlets might be 'daisy chained' rather than 'home-runs'.  If 'daisy chained' and there has been any renovations to the home, the abandoned outlets may have been sheet-rocked over.

Good luck.

Joe

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Bert Kehren via time-nuts
Sent: Saturday, December 05, 2015 5:24 PM
To: time-nuts at febo.com
Subject: Re: [time-nuts] RG 6 U couplings


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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