Tram 140MHz-170MHz + 430MHz-470MHz Dual Band NMO Antenna (1181)
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- No tuning needed
- Unity gain vhf
- 2.5Dbd gain uhf
- Solid brass nmo mount with Black kote finish
- Gold plunger-type contact pin
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Amplify your signal with the tram 140mhz-170mhz + 430mhz-470mhz dual band nmo antenna. This antenna features unity gain vhf, no tuning and 2.5Dbd gain.
- Is Discontinued By Manufacturer : No
- Product Dimensions : 18.9 x 3.2 x 1.4 inches; 4.8 Ounces
- Item model number : 1181
- Department : See specs
- Date First Available : February 12, 2014
- Manufacturer : Transgenomic
- ASIN : B00IDTJ2KE
Best Sellers Rank:
#34 in Two-Way Radio Antennas
- Customer Reviews:
Top reviews from the United States
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I measured the SWR and impedance across both bands with a Comet CAA-500 meter and have plotted the results. The graph should speak for itself as to why I like these antennas so much. As measured, the antenna is mounted on an NMO mount through the roof of my '08 Prius, near the back.
Build quality seems fine, no issues so far. The one on the truck has stood up to some serious off-road desert adventuring without problems.
After conducting low power simplex radio checks using an FT-60r with another ham on 2 meters at a distance of 20 miles with the Tram 0 gain antenna versus a brand new 3db gain Diamond 5/8 wave antenna using same coax and mount, the reported Tram signal quality was reported to be superior to the Diamond. I had the same report on 70cm.
I was able to test the iComm marine VHF radio by transmitting to a test station that re-broadcasts your transmission. For this test, I was unable to transmit using the same mount and coax with the different antennas because they have different bases. I was unable to discern any difference at low power between the two antennas. The Shakespeare antenna is also mounted much higher than the Tram
Overall, I am very pleased (frankly, I'm shocked!) with the Tram's performance. After being exposed to a saltwater environment for more than a month, the antenna shows no signs of corrosion. Time of course, will be the final judge. My Diamond lasted 3 years before it gave up the ghost. I purchased new Diamond antenna anyway, I just don't leave it up when it is not in use.
Would I buy it again? Yes. I will buy another Tram when the salt air eats this antenna, as I am sure it eventually will.
The antenna works great for 2 meters, even has a Lower SWR than my Diamond mag mount. However 70CM is a completely different story, the SWR is so high that my radio ceases to transmit on in unless I reduce power to 1W, even then the SWR reading is through the roof!
If you're looking for a monoband 2 meters NMO antenna for $10, you can't go wrong here. -2stars for being as useful as scrap metal on 70CM.
Update - After 1 year I am looking for something different. I now have a collection of bases because the trees have stolen several of my antennas now. Not the antennas fault, I get good reception and good SWR with it but the little twist in the middle prevents me from keeping one on my UTV.
Top reviews from other countries
It work great too. Never had trouble. I have that antenna since 2 months only ...
This replace my 5/8 antenna I had for 2 M & 70cm. So far, I do not regret it ... but I'm keeping the 5/8 for when I'm doing long travels.