The picture is of a purported old, discontinued FAA wide band antenna. I have seen these on towers at airports growing up but not for many years now. The owner says the inside has sheet metal structures in it and after sweeping it with a VNA, says it's very wideband. It has a very large TNC looking coax connector and was meant to be mounted on a pole as the center of the base has a threaded section. Any old FAA techs about that know this Antenna and the part number and MFG? I'd love to be able to find a datasheet on these.
Anyone know this Antenna?
- Thread starter dnyberg2
- Start date
AB5ID
Member
I don't know what it is but It looks similar to this one.
AS-1181/UR VHF 100-156 MHZ AIRPORTRADIO ANTENNA ENCLOSED IN RADOME | eBay
CONDITION: USED, UNTESTED, SOLD AS IS, BOTTOM PART BROKEN, CLAMP ASSEMBLY IS MISSING.
www.ebay.com
flatfoot2421
Member
AS-1181/UR VHF AIRPORT ANTENNA WITH RADOME FREQUENCY 100-156 MHz RATED for 100 watts Description AS-1181/UR IS A VHF RADOME ENCLOSED SINGLE ELEMENT VERTICALLY POLARIZED HALF WAVE DIPOLE ANTENNA THAT COVERS 100 TO 156 MHZ. THAT IS MOUNTED ON A 1.25 INCH DIAMETER PIPE BY MEANS A BUILT IN CLAMP. THE POWER RATING IS 100 WATTS, THE CONNECTOR IS A TYPE HN. OVERALL LENGTH: 58 INCHES, DIAMETER: 8 INCHES AT THE BOTTOM, NET WEIGHT 14 LB.
(Text and photos taken off the internet)
(Text and photos taken off the internet)
Can you post a screenshot of the VNA sweep?
prcguy
Member
Not sure why but I think I need one of these.
I feel I should point out that you shouldn't try swinging from it like Tarzan...
This version looks interesting. Only weighs 65lbs.
CA-1181 AS-4163 / URC Dual-Channel UHF Antenna
The Model CA-1181 antenna is a dual-channel UHF antenna designed for shipboard use. The antenna provides unobstructed, interference-free operation for dual-channel communications over the 225 to 400 MHz frequency range.
Interesting that it allows an AS-390 to be mounted on top, when they cover the same freq range.I feel I should point out that you shouldn't try swinging from it like Tarzan...
This version looks interesting. Only weighs 65lbs.
CA-1181 AS-4163 / URC Dual-Channel UHF Antenna
The Model CA-1181 antenna is a dual-channel UHF antenna designed for shipboard use. The antenna provides unobstructed, interference-free operation for dual-channel communications over the 225 to 400 MHz frequency range.www.l3harris.com
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