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write your own review of the Comet CSB-7900 / CSB-790A.
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K4MC
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Rating: 4/5
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May 10, 2009 20:28
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Heavy duty
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Time owned: 3 to 6 months
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This antenna gives me a little more gain than the SSB-7, but at a price. The construction is very strong, with heavy duty elements. With this comes greatly increased wind loading compared to the SSB-7. I am very concerned about using this with the SO-239 mount through the roof (sheet metal) of my Ford Explorer due to the wind drag generated at highway speeds. If selecting this antenna, look for a sturdy mount and enjoy a very good antenna.
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K4TWK
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Rating: 5/5
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Aug 28, 2007 20:10
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Good antenna
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Time owned: 0 to 3 months
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Good antenna!
Only issue I've had is that the lower trap came apart at the top cap. I called Comet and quickly spoke with a live person who seemed aware of a quality issue resulting in this specific problem. My name and address were quickly taken and I should have a no cost replacement waiting on me when I return home later this week. That's excellent customer service.
As a follow-up to my previous review, the replacement coil failed just as the first one did after about 1 week. I again called the support phone number and quickly had a replacement. The third one seems to be holding.
As for performance, it works great! I get great reception on both bands and SWR is always very low.
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KI6FCI
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Rating: 5/5
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May 29, 2007 13:02
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Takes a licking
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Time owned: 6 to 12 months
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After most of a year & close to 200,000 (team operation, truck never stops moving) miles on my left mirror mount this antenna is working great. The base of the antenna is about 8.5 feet off the ground so it can't help but get out great, and get hit by trees. I had to replace the lower inductor ($12.00) once after a few too many tree hits, but that's to be expected in this application. Puts out a good clean signal.
My installation is less than perfect as Freightliner Columbia trucks are made with a lot of fiberglass and make poor ground planes. SWR measured with a MFJ-259B is less than 1.7 142-149 MHz.
1.4 143.5-144.75 Mhz,
1.5 145-146 MHz,
1.6 146.25-147.25 MHz.
1.7 147.5-149 MHz
The sleeve for the fold-over hinge must be tightened with pliers or it will vibrate loose.
You can kind of see it in this pic:
http://donnerpartykitchenstaff.com/Images/OutsideOfTruckResized320.jpeg
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