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Commercial Radio Antennas - Please keep discussion related to professional, commercially used antennas and antenna systems for the two-way radio industry. Topics for the use of these antennas on amateur bands are accepted here.

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Old 04-10-2017, 11:51 AM
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Default Larsen NMO ICEFIN

Thought I'd post this for kicks.

Picked up this sample antenna from Larsen at a trade show. It's a real antenna, not a demo. Referred to as their ICEFIN line.

Gives a good example as to what's inside these fin antennas. This one is specifically for the 800/900MHz band.



Seems to work slightly better than the 1/4 wave 800MHz antenna I normally use on my truck.

Some day I'm going to pick up one of those crappy VHF low profile antennas that I've been offered by disgruntled owners and cut it open and photograph whats inside.
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Old 04-10-2017, 12:23 PM
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I can't tell by the pics how it's constructed. Is it a wire grid or metallic film on a piece of plastic?
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Old 04-10-2017, 12:30 PM
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Wire grid molded inside plastic.
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Old 04-10-2017, 12:46 PM
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So the whole fin is a solid piece of plastic?
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Old 04-10-2017, 12:49 PM
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Yup. Appears that the antenna is built and encased in the mold. There are some molding lines along the edge. Appears to be a solid piece of plastic with no voids. If the non-clear antennas are made the same way, then they should be pretty sturdy units.

Funny thing about it, though. Mounted on the back of the truck cab and with the shell in place, the rear cargo light reflect up towards the antenna. At night the antenna sort of glows if I've got the door open.
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Old 04-10-2017, 12:51 PM
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Kool!
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Old 04-10-2017, 2:06 PM
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Pump it full of neon gas and watch it glow under power!
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Old 04-10-2017, 6:06 PM
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I will leave this here

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Old 05-28-2017, 6:56 PM
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Ive got that type antenna in 2.4/5ghz and always wondered what it looked like electrically inside. Thats really cool.
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