| Author |
Message |
    
Mikefromms
Intermediate Member
Username: Mikefromms
Post Number: 132
Registered: 6-2003
| | Posted on Thursday, April 01, 2004 - 6:55 pm: | 
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Does anyone use barrel connectors to join coax? Is there any noticeable loss using a barrel connector?
mikefromms |
Crafter
Senior Member
Username: Crafter
Post Number: 1010
Registered: 12-2002
| | Posted on Thursday, April 01, 2004 - 7:11 pm: |
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I do, and have noticed no difference, also join two lowpass filters with a adapter and dont notice any difference either.
Mike on a side note e-mail me I got that thing made for ya you wanted. |
Tech8541
Moderator
Username: Tech8541
Post Number: 153
Registered: 12-2003
| | Posted on Thursday, April 01, 2004 - 8:13 pm: |
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the loss at cb freqs is so low, you could say that there is no loss. |
Bulldog369
Member
Username: Bulldog369
Post Number: 96
Registered: 2-2004
| | Posted on Thursday, April 01, 2004 - 10:50 pm: |
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if you mean a coupler i have no difference.. there should not be cause you are really just adding an 1/2 an inch to the legth of your coax i actually moded one for that the tips of each connection would touch an it seemed to work great. |
Keithinatlanta
Intermediate Member
Username: Keithinatlanta
Post Number: 202
Registered: 3-2003
| | Posted on Thursday, April 01, 2004 - 11:11 pm: |
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Ok Mike. Educate me. What is a barrel connector. I have a connector where you can join two pieces of coax with pl 259 connector on each end. But that is all I have seen. So what is a barrel connector? Thanks.
Keith in Atlanta |
Tech808
Moderator
Username: Tech808
Post Number: 2017
Registered: 8-2002
| | Posted on Thursday, April 01, 2004 - 11:23 pm: |
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Keith,
A Barrell Connector is:
A DOUBLE FEMALE CONNECTOR that allows you to Connect Two Pieces of Coax together that have PL259 ends on them. See Link Below:
http://www.copperelectronics.com/cgi-bin/checkitout/checkitout.cgi?catalogSTORE:CKIE:prodC70-05004+
They are VERY HANDY if you decide to move your equipment to another area in your room and you find your coax is a little short.
The you can add a barrell connector and a Jumper/(another piece of coax.)
Hope this help's.
Lon
Tech808
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Barracuda
Intermediate Member
Username: Barracuda
Post Number: 225
Registered: 3-2003
| | Posted on Thursday, April 01, 2004 - 11:25 pm: |
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If the connector doesn't get any warmer when you transmit, it can't be disipating any real power in the connector itself, so therefore there can't be any great loss from it being there. |
Mikefromms
Intermediate Member
Username: Mikefromms
Post Number: 133
Registered: 6-2003
| | Posted on Friday, April 02, 2004 - 6:29 am: |
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Thanks for all the replies. You'd never believe (well, your might believe) some of the things I've heard about barrel connector and other coax related stories. The main one that sticks out in my mind is the 1 db gain loss it supposingly causes. I was really wondering about that. If you guys don't see a difference in performance that is good enough for me. Now I've got to order some more coax.
mikefromms |
Keithinatlanta
Intermediate Member
Username: Keithinatlanta
Post Number: 204
Registered: 3-2003
| | Posted on Friday, April 02, 2004 - 7:49 am: |
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Thanks Lon. I thought that was what it was. That is what I have.
Keith |
Ozzie
Intermediate Member
Username: Ozzie
Post Number: 163
Registered: 11-2003
| | Posted on Friday, April 02, 2004 - 9:11 am: |
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Mike,
Any join will have a loss. How much depends on the quality of all connectors used in the jopint, how well they were put on the cable and the frequency in use.
A Barrel connector, used at 11m, with properly fitted PL-259 plugs should have almost 0 loss ( I think the figure is around 0.05db but cannot be sure). Anyway the loss is so small that unless you after the ultimate in performance it really doesnt matter.
I have used them as high a 70cm on several occasions with no NOTICABLE loss of communications quality. Just make sure everything is good and clean. BTW you can clean the pins on the 259 with a white soft eraser. |
Skilletlicker
Intermediate Member
Username: Skilletlicker
Post Number: 145
Registered: 5-2002
| | Posted on Friday, April 02, 2004 - 3:35 pm: |
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i have usef barrel connectors for years with no problems,it is the only way i know to propely connect two pieces of coax,lou franklin says splicing a coax causes an impedence hump raising the swr like tying a knot in a water hose
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Crafter
Senior Member
Username: Crafter
Post Number: 1015
Registered: 12-2002
| | Posted on Friday, April 02, 2004 - 6:37 pm: |
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Higher quality metals conduct rf energy better than non-precious, I do pay the extra money for silver and gold connectors though I realize its just alittle but every little bit helps.
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