New antenna with 213 cable.

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New antenna with 213 cable.

Postby friar » Fri Mar 10, 2017 7:59 pm

Going to put up in loft this weekend to connect to scanner.
Has any one come across a wall socket
for the thick 213 cable to save long length on floor?
Thanks for fascinating forum.
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Re: New antenna with 213 cable.

Postby m0lsx » Fri Mar 10, 2017 8:38 pm

We try to reduce connectors, as they add in attenuation. They may be available, but you would probably be better off with a antenna switch, if you want to add some form of connector between antenna & radio.

http://www.kcb.co.uk/shop2/contents/en-uk/d22.html
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Re: New antenna with 213 cable.

Postby friar » Fri Mar 10, 2017 11:39 pm

Thanks for reply, a bit more tricky than I thought.
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Re: New antenna with 213 cable.

Postby G4RMT » Sat Mar 11, 2017 9:43 am

The problem with the wall socket is a that typical connectors for this kind of cable have to mechanically be strong because the cable is so stiff, so ordinary plastic style, normal depth boxes and plates just don't work. If you have the depth behind, you can buy things like N type cable connectors that have a square flange that can be bolted into a standard metal wall plate. This works fine, but realistically needs five or six inches behind. Alternatively you can get a flanged n socket to n socket, and terminate the cable in the wall with a right angle n connector which saves space. Properly put on decent n type adaptors and connectors aren't too troublesome to loss wise. Biggest consequence is a hurt wallet!. Connectors and socket could easily come to twenty five quid for something neat!
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Re: New antenna with 213 cable.

Postby m0lsx » Sat Mar 11, 2017 12:32 pm

G4RMT makes a good point, about space needed to fit such a wall socket to RG-213, which is thick & rigid coax. The main reason for this is the way coax is made & how it gets it's impedance.

Image

The plastic which separates the centre core from the outer braid is a specific thickness. so if you bend coax too much, you damage that insulator & change the distance between the two brass conductors & change the impedance. The thinner the coax the more flexible it is & RG-213 has many good qualities, but flexibility is not one of them.
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Re: New antenna with 213 cable.

Postby G4RMT » Sat Mar 11, 2017 1:04 pm

Image
Image

Still fairly chunky
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Re: New antenna with 213 cable.

Postby friar » Sat Mar 11, 2017 11:03 pm

Thanks again all of you, for inspiration, like the photo of last connection.
Will see how I get on.
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Re: New antenna with 213 cable.

Postby friar » Wed Mar 15, 2017 10:14 am

All installed now,and thick cable is a pain,especially on top of scanner,but
working fine,so will put up with it.
:wave: Thanks again for imput.
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Re: New antenna with 213 cable.

Postby m0lsx » Wed Mar 15, 2017 10:55 am

friar wrote:All installed now,and thick cable is a pain,especially on top of scanner,but working fine,so will put up with it.


Use a tail (a shortish patch lead) of thinner coax.
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Re: New antenna with 213 cable.

Postby friar » Fri Mar 17, 2017 9:10 pm

Will try a tail, thanks for tip.
While I'm chatting, not too impressed with Eurostick dx 25 aeria,l installed in highest part of loft so far.
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