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Re: [IRCA] Cable connectors
- Subject: Re: [IRCA] Cable connectors
- From: Bruce Portzer <bportzer@xxxxxxxxxxx>
- Date: Sun, 05 Sep 2010 15:23:16 -0700
Craig
I'm assuming your measurements were made with an antenna connected at
the far end of the cable. It would be interesting to know the
difference in the effective shielding for Cat 5 cable compared to RG58.
How much signal, if any, do you have on the Cat 5 cable and the RG58
when there's an open circuit or 50 ohm load at the far end?
Bruce
On 9/3/2010 2:54 PM, Craig Healy wrote:
Recently I bought some items that may be useful for antennas. The
first is an adapter that combines four BNC cables to a single CAT5
type cable. It's meant for video use which runs from essentially DC
to 4MHz. To test it I checked the S-Meter for both 550 and 1480.
Then I removed the RG-58 cable and swapped in the CAT5 with one of the
adapters on each end. Both S-Meter readings were the same.
http://www.mcmelectronics.com/product/50-7769
They also sell video ground loop isolators. That puts a transformer
on the end of the RG-58 BNC connector. I did the same test as above
and got the same results. No drop is signal strength.
http://www.mcmelectronics.com/product/82-6131
I do like the ability to run four separate signals down one cable.
Especially since CAT5 cable is cheap and easy to make the RJ45 end
connections.
FWIW...
Craig Healy
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