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Either one of those will work. Both cables solid dielectric which is the best option for mobile.

What I wanted to say is that all mobile cb antennas are 1/4 wave length. If you say: “ they are not “ , Can you explain?

All mobile antennas ( magmount and permanent mount ) are 1/4 wavelength. The permanent mount tend to work more efficiently the ground plane is directly in contact with the car’s body. On magnetic mount that ground plane is not.

Hi. According with the picture , it can be fixed. Then sell it.

I have the new one and followed the assembly instructions and achieved an SWR of 1.3 .

1.5 is ok. Leave it there and enjoy.

Hi. If you use 75 ohm coax, antenna length is shorter ?

What GM did you get, the 5/8 or the 1/2 wave one ?

I had that antenna. The cover is supposed to already have a drain hole. Maybe the hole has dirt, spiderwebs. Remove the cover and clean it inside. Verify the coil as well. Also, a drain hole on the middle of the first aluminum section. The picture will be helpful for you to see how it is...

Well, I think no one has bought this antenna. Probably Mosley are reluctant to provide real pictures because they don’t want the competition to copy their design. I am just wondering !

Try another radio with built in SWR meter and /or another external meter in order for you to discard if it is the radio or the antenna. An antenna analyzer would be best.

If you are not running big power, you can try soldering a piece of copper, if not, you can buy solid bare copper and make a new coil. In order to do that, you must determine the gauge of the broken one. Here is a link to buy it. Some sell it by the foot, other by the roll...

Where are the pictures of the Devant ? Real pictures, no drawings.

No it doesn’t. But sometimes, the could be Common Mode Currents and cable length movies might affect readings. The best way to tune an antenna ( mobile or base ) is to use an antenna analizer with a 1/2 wave jumper. This article explains itself https://www.qsl.net/w4sat/velfact.htm

It is a good coax but remember, it is a foam dielectric type coax. Watch out for sharp bends. Center can migrate to the shield and that is not good. That is why a solid dielectric coax is more suitable for mobile. RG-400 would have been the best choice. It is freaking expensive, but worth the price.

I refer to close up real pictures.

Still waiting for real pictures of this antenna. I wonder why not a single picture can be found in the web.

I have a Sirio 5000 antenna that came with the foil. For some reason I don’t recall, I changed the magnet with one without the foil. SER went up. I had to go back to the original magnet. Definitely, the direct grounding is better but the foil works.

What is the model ?

Any pictures of this new antenna ?