Monday, January 30, 2012

How to set up a base station cb radio without the use of coax cable?

I just got this base station cb from my grandfather but I don't have any connectors or coax neither an antenna and was wondering if there was a way to hook it up with out any of these itemsHow to set up a base station cb radio without the use of coax cable?
You going have to have an antenna, coaxial cable, coaxial connectors for both ends and if the radio does have one built-in and S meter to tune the antenna.How to set up a base station cb radio without the use of coax cable?
It's not possible at least not for transmitting. A long wire poked into the antenna socket should hear something on receive but is totally inappropriate for transmitting as it won't match the transmitter output and could do damage if you tried transmitting with it. The good news is that CB antennas complete with coax and connectors are relatively inexpensive.How to set up a base station cb radio without the use of coax cable?
If you have a length of TV antenna strip stuff and a place to hang the dipole/transmission line combination that you make from it, I believe that half wavelength multiples repeat the impedance of the transmitter, and it is possible to use one length of this stuff to make a cheap antenna. Only thing is, you have to use the right length for the line going out to the antenna part of the strip.

Slice the ribbon lengthwise for 9 feet, and tie it in a "granny" knot to both keep the ribbon from splitting any further, and use the knot as a place to mount the antenna if it's going to be an inverted-V (between 90掳 and 110掳 for best radiation pattern).

The tricky part is that half wavelength multiples of the type of ribbon you use will not be the 18 feet sections that you would find with coax.. The velocity factor is different, and you may have to see if there is a chart available somewhere on the Internet to give you some better guidelines. A standard alligator clip to connect one side to the center of the SO-239 on the radio, and maybe a battery clamp to connect the other wire to the outside, and you're on the air. You may be limited to only a few channels, but it would work.

I don't know if you have any ham friends that might have an SWR analyzer to help you with this, but I think it would be a very interesting experiment. Good luck.

Edit: It could be odd half-wavelength multiples, I'd have to look it up. It's been a while. BTW it's TV twin lead, use the brown stuff.

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