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TRAM 1465 Land Mobile Base Ground Plane Kit Confezione standard

Brand:tram-browning

3.5/5

€
78.03

Facile da installare su qualsiasi palo o tubo da 2 pollici. Carico del vento di 100 mph. Potenza nominale 200W. Radiali in acciaio inossidabile con piastra a terra da 20,5 pollici. Trasforma l'antenna mobile NMo in una stazione base Omni.

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EAN: 0012301783568

Categories: Elettronica, Audio e video portatili, Radio bidirezionali, Accessori, Antenne,

Facile da installare su qualsiasi palo o tubo da 2 pollici. Carico del vento di 100 mph. Potenza nominale 200W. Radiali in acciaio inossidabile con piastra a terra da 20,5 pollici. Trasforma l'antenna mobile NMo in una stazione base Omni.
Brand tram-browning
Color Silver
Item Dimensions LxWxH 21 x 4 x 2 inches

3.5

5 Review
5 Star
72
4 Star
12
3 Star
8
2 Star
4
1 Star
4

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Scritto da: Radiohead
Works as it should.
I have used many of these for amateur and land/mobile radio. The perfect way to take a mobile antenna and use it Fox fixed use. Some of those have been up for 25+ years trouble free. Use dielectric silicone grease on the threads of the MMO mount, center pin and PL 259 threads and you will have an inexpensive trouble free installation for years to come. Always seal the coax connector with tape or use coax seal. Water infiltration is your enemy.
Scritto da: Max Oldham
Returning, apparently did not work as expected
I attached a Tram 1181 and saw poor SWR across the 140-144 MHz and 440-450 bands, and even worse for GMRS (roughly 462-468 MHz). Many frequencies that I often use were showing SWRs of 2+. For measurement, I used a NanoVNA and also a Surecom SW-102. Those two rarely agree 100% with each other but they both showed poor SWR in the frequencies of interest. The top of the 70 cm band was almost OK, with my very best SWR reading for this setup being about 1.4 near 450 MHz. It's possible it was the fault of the 1181 antenna (rated for 140 - 170 MHz and 430 -470), but the reason I tend to blame the 1465 base kit is because I also have a good-performing Tram 1185, which has a mag-mount plus what seems to be the same antenna element as the 1181. The 1185 when mounted on a vehicle performs well for me on both ham and GMRS frequencies. Anyway I might be blaming the 1465 unfairly - in theory the problem could be with the 1181. But my good experience with the 1185 leads me to suspect the problem is with the 1465. Frankly the experience makes me feel sour about the whole idea of just adding radials to half a dipole - if that idea works I would have to be convinced. I hope you followed all that. I'm returning the 1181 antenna as well because I don't have an NMO mount on my car - I bought it specifically to work with the 1465 base kit. Random other things...one of the 4 set screws was loose in the packaging, glad I noticed it because it's tiny. In fact initially I thought they only gave me 2 set screws because that's all I could see, with two vacant holes. But one of the 2 holes that had a visible set screw also had another hiding underneath - someone had to assemble this in second, not minutes I suspect. Anyway so that's 3 set screws and the 4th was at the bottom of the bag, glad the bag didn't have any holes in it. BTW, when I lifted the antenna about 25" using a telescoping pole, one of the radials fell out, even though I believed I'd tightened it - best to test before you hoist. Finally, I have begun to suspect that "UHF" connectors (plug PL-239 and socket SO-259) are no good for the frequencies we call UHF nowadays. This isn't the first problem I've had with "UHF" connectors and I am just about done with using them. A professional who design SWR meters for a liviong recently told me he thinks some "UHF" connectors are good, some are bad, even from the same brand and model number. I totally believe him and I would not be surprised if that was the problem. However, I also have friends who think it's perfectly fine to transmit with 2:1 SWR. I don't, I think it's bad for the radio and your real losses are probably greater considering the reflected signal is already attenuated by cable losses on the way back down. I hate returning things so I wrote this rant, hope nobody minds.
Scritto da: John L Reviewer
Watch out for those little set screws.
There are 4 tiny set screws required to secure the radials into the NMO base. Mine arrived with one set screw missing. I've seen other reviews about this issue, but, when I contacted the company, they quickly sent me 2 more set screws. When opening the product for the first time, look for any set screws that are loose in the bag, since they may have worked their way out of the base during shipping. Not the best design for field operations, but a good response from the US-based company. Product itself is made in Taiwan.
Scritto da: M. O.
It does what it claims to do
This is a simple ground plane kit. It is optimized for VHF and higher frequencies. As far as the set screws go, I only saw two of them when I opened the package. Uh oh. Turns out, the two missing ones was inside the holes that already had set screws in them. The holes are deep enough that you can screw in two set screws and not realize it. So, check all four holes for set screws before complaining to the manager. So, if your intentions are to use this on frequencies lower than VHF, this is not the item for you. 2 meters, 220 MHz, 440 and up, you will do fine. For bands higher than VHF/2 Meters, you shouldn't need to trim the ground plane radials. I mean, if you put your UHF NMO antenna on your car roof, do you trim your car roof to 6 inches ? No. You can always have more ground plane than you need, but not less. I can't attest to the weatherproofness of this kit. I am using mine for attic use. If it were outside, I would pay attention to the base. You may need to seal everything up. Around the connector, at the bottom of the NMO base...etc. So far, this kit has met my expectations and I am quite happy with it.
Scritto da: Chet
Connector Beware
I bought this kit, loved it, and immediately bought two more. Strangely, though, while the first one I ordered came with the SO-239 as pictured, the next two each came with an "N" connector instead. It turns out that for me this eliminates an adapter, so I'm thrilled actually. N connectors are better anyway, particularly in the UHF and higher bands, so I hope the next one I order comes with N connectors too. But you might not have wanted that. My suggestion is to just be prepared to put a different connector on one end of your cable if need be. It's still a great mount kit. Anyway, here's why I think these things are great. You don't have to use the ground plane at all if you don't want to, and then it becomes just a great NMO pole mount. The wire elements are all trimmable, but you should use serious dikes -- I got these just for the purpose [ http://amzn.com/B000PRWJ52 ]. They're long enough to tune for anything from VHF (1/4λ) on up, with as much precision as you can manage, anyway. I've got it down to about 1.065 VSWR so far for 1/4 wave UHF. This antenna [ http://amzn.com/B00438SJQC ] turns out made of the same stuff and so becomes an identical fifth element up top just like tuned 1/4 wave ground plane antennas are supposed to have, I guess. So please, TRAM, keep the N connectors! Or sell both, but make them unique products! Please! Regardless of the connector confusion, I'm giving 5 stars because this thing rocks and I wouldn't steer anyone away from it. Just be aware you might need to put a different end on your cable on one side. (Or use an adapter -- if you must)

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