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| Reviews Summary for Comet GP-98 Tri-Band Antenna (2m, 70cm, 23cm) |
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Reviews: 2
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Average rating: 4.0/5
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MSRP: $199.99
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Description: GP-98
Tri-Band 146/446/1200MHz
Gain & Wave:
146MHz 6.5dBi
5/8 wave x 2
446MHz 9.0dBi
5/8 wave x 5
1200MHz 13.5dBi
5/8 wave x 12
VSWR: 1.5:1 or less
Max Power:
150W/100W 1200MHz
Length: 9' 8"
Weight:
6 lbs. 10 ozs.
Connector:
N-Type
Construction:
Heavy-duty fiberglass, 2 sections
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More info: http://www.cometantenna.com/products.php?CatID=1&famID=5&childID=5
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write your own review of the Comet GP-98 Tri-Band Antenna (2m, 70cm, 23cm).
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VA7LWE
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Rating: 4/5
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Aug 4, 2009 23:13
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Nice antenna... shame about a plastic stress fracture in mine
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Time owned: 0 to 3 months
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Just installed a GP-98, which appealed because of its high gain and support for 23cm.
I agree with W9HAT that the instructions could be a little better. In particular, I was unsure whether I was supposed to slide the upper section radiating element down inside the fiberglass tube in order to mate it with the lower section element. I had to exert quite a bit of force before the whole inner element moved in the outer tube, and in the absence of definitive instructions on the matter, I was concerned that I might damage the antenna. Nevertheless, this was really the only way the two radiating elements could be connected and sure enough with sufficient force, the upper section moved enough for me to make the appropriate connection.
The one other issue I had with the product construction is that the two halves are physically joined with a plastic compression fitting that screws together while compressing a rubber grommet for waterproofing. Either my antenna had a defect, or I slightly over tightened this fitting, because a couple of days after assembly and while the antenna was still lying on the floor, the ambient temperature reached the low 30's celsius, and I heard a loud crack. On inspection, I found the plastic fitting had cracked under stress. This was easily 'made good' with some glue, self-amalgamating and vinyl tape and a few nylon zip ties to hold it together, but even so, I'm a little peeved that the product failed in this way with what was only a hand tight fitting - albeit at essentially the full ability of my grip.
Though very early days (only got the thing up this week), the antenna does appear to be working well enough - further time and testing will tell more fully. Overall, with the exception of the failed connection the antenna seems well made and will hopefully provide years of service.
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W9HAT
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Rating: 4/5
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May 29, 2007 08:26
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Fine so far...
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Time owned: 0 to 3 months
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I bought this antenna at the Hamvention in Dayton in May 2007 for $160. I mounted it above the roof of the house at a height of about 25'. The unit assembles easily and the hardware seems good. Instructions could be a little better but overall it's pretty obvious how the thing goes together. I am using the antenna with a Kenwood TS-2000X and a Comet CFX-4310C triplexer with about 40' of LMR400 coax (CQ-1000 cable from Wireman) and a good ground. Performance has been good in my limited testing. I will post more information later after I've thoroughly tested all bands and modes, but so far it's looking good.
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