Antenna test: Stock V-85 High Gain VS Nagoya NA-771 (fake and real) vs UT-72G

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Antenna test: Stock V-85 High Gain VS Nagoya NA-771 (fake and real) vs UT-72G - Part 1 SWR test

Рет қаралды 5,776

2 жыл бұрын

In part 1 we are doing SWR test of real and fake Nagoya antenna and comparing to stock rubber ducky V-85 to determine is it worth upgrading.
In part 2 we would do range test.

Пікірлер: 19

@HardcoreFourSix 2 жыл бұрын

The "G" designator means that they are tuned for GMRS band (462-467MHZ)

@adlucem9845 2 жыл бұрын

Magnetic antennas have their ground attached to the magnet. They have to be tested on a metal surface.

@garyburns1033 5 күн бұрын

You need a metal pan like a pizza pan and stick the antenna magnet mount in the center with at least a inch of metal or more around the base. Then you can use it as if it was on the ground.

@terryshrives8322 Жыл бұрын

Its nice to see someone actually know how to use that meter. I can’t tell you how many people don’t put their hand around it when taking a reading

@kord2003 Жыл бұрын

When wrap my hand around it it starts showing much smaller values depending on how tightly I hold it. If I squeeze it tight it shows SWR=1.01 even for the crappiest knockoff antenna. Honestly, I'm not sure if that's the correct way to test SWR with this meter.

@SecretMan299 5 ай бұрын

Good day, I'm planning to purchase either the Nagoya UT-72 or Nagoya UT-72G antenna. I'm primarily going to use frequencies between 451.000 to 455.000 most of the time, and occasionally frequencies between 144 to 145. I've heard that the Nagoya UT-72G might be a better choice since its frequency range extends from 155 to 462 compared to the Nagoya UT-72, which covers 144 to 430. However, I've noticed that the Nagoya UT-72G is more expensive in my area. Can you please provide guidance on which antenna would be the better option given my frequency usage and budget constraints? Your assistance is much appreciated. Thank you.

@craigspada1676 7 ай бұрын

Great info and video, very informative. Thanks 73's WA2TWF

@rilosvideos877 7 ай бұрын

You got the '1.01' reading quite often when testing - that brings me to the conclusion there's something weird in your test setup! From the comments i read that this is due to the usage of the SWR-meter you use, and i think so too. When you grab it thightly with your hand you will nearly always get such readings. For the fake Nagoyas i saw very different results when testing. I think the quality spreads from 1:1.5 to 1:6 or similar depending on what you actually got. They don't do manual matching/tuning. At the base of the real ones you will find little inductor coils and caps as matching network for low SWR.

@optusphone3966 2 жыл бұрын

Thank you very much for comparison test.

@terryshrives8322 Жыл бұрын

I had about the same results

@Knarf14 Жыл бұрын

Can you try this test with your hand off the meter

@mavz5707 Жыл бұрын

Instructions on this meter for swr said with the hand on, for power test without hand😉

@wyckedknight 2 ай бұрын

Never ever place your hand and fingers on the connectors, it will not provide accurate testing.

@jfrphoto01 Жыл бұрын

Useless comparison and tests! Mag mount antennas must be on a metal surface (car body) to test SWR and the 771G is a dedicated GMRS antenna and not intended for use on VHF except for receive! I have several of the "fake" Nagoya 771's and, when tested with a proper counterpoise on a properly calibrated NANO VNA SAA-2, they were all well within specs on both the amateur VHF (144 MHz) and UHF (430 MHz).

@alienwarex51i3 Жыл бұрын

Yeah but who tf wants to use a counterpoise

@damiengirvan5020 Жыл бұрын

Really?? I think I just bought about five of these fake antennas.... How do you then explain the difference in swr between the real and the fake he is demonstrating in this video??

@alienwarex51i3 Жыл бұрын

@@damiengirvan5020 My authentic Nagoya 771 has 1.01 SWR on 440 MHz and about 1.5 SWR on 145 MHz. From this video (and other tests I've seen) it seems like the fake ones are a roll of the dice on whether they're OK or not. Some of them have 3+ SWR on one of the bands, others are alright. He's right though, the UT-72G antenna this guy is testing is specifically for GMRS frequencies.