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When Antenna Specialists bought out Avanti, they upgraded the entire line of antennas.

The later versions (post A/S buy-out) came with the coils which made the Sigma 5/8 DC grounded. They had to change the physical length of the main radiator to compensate for the new coil.

A/S also strengthened the base assemble and added 2 more 1/4-20 bolts to hold the fiberglass insulator rigid, making the base thicker, and re-casting and strengthening the hubs (also used on the PDL-II and Moonraker beams).

The later model, with the coil, is the desired version.

If there is someone who knows more about Avanti antennas then me, please let me know! I'm always open to learning even more about these superior antennas!

[QUOTE="Master Chief, post: 63741, member: 111"] When Antenna Specialists bought out Avanti, they upgraded the entire line of antennas. The later versions (post A/S buy-out) came with the coils which made the Sigma 5/8 DC grounded. They had to change the physical length of the main radiator to compensate for the new coil. A/S also strengthened the base assemble and added 2 more 1/4-20 bolts to hold the fiberglass insulator rigid, making the base thicker, and re-casting and strengthening the hubs (also used on the PDL-II and Moonraker beams). The later model, with the coil, is the desired version. If there is someone who knows more about Avanti antennas then me, please let me know! I'm always open to learning even more about these superior antennas! [/QUOTE]

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