RadioddityRD-331 SMA-Male High Gain Dual Band Handheld Antenna for Radioddity GM-30 GD-77 GD-77S Ham Radio, VHF/UHF 136-174/400-470MHz Ham Two Way Radios, 8.07in

Better than stock antenna. Works great on all 3 bands.highly recommended

Great antenna, great range. Tested at 1 mile from nearest repeater without line of sight and in town. Wish it was a little less flexible.

I got this to use with my UV-5XE instead of the two short whips that came with the HT. The first one did not work. However, Radioddity's customer service was very responsive, sending a replacement that does work. Amazon's website for this return was pretty annoying but once I got to Radioddity, all was fine.

Swept lower SWR on nano VNA and better forward power on meter. Fits tyt with no gaps at antenna base.More flexible than stock antenna.Only gripe is base is plastic. For the price a metal base with knurling would be better. Overall pretty decent.

The media could not be loaded.  Tested this antenna out on a GM-30 from radioditty for nearly four hours. Two radios were run side-by-side, one with each antenna, on scan mode for several hours.Compared to the stock antenna, this antenna received weak signals more often, and middlin’ signals with less noise and greater clarity. Indeed, it received weak simplex signals that the stock antenna did notAlso, one of the repeater identification transmissions came with a lot of noise — until I realized that only the stock antenna was noisy. Notice what happens when the stock antenna. Radio is turned off in the video.)The radio with this antenna received the repeater identification audio with full quieting and noise free. (to be fair, picking up the stock antenna radio and rotating in certain directions, eliminated the noise, but that was not necessary with this antenna.)The antenna is thin like a whip (accept at the base) and quite bendy, which is good. It is only about 2 inches taller than the stock antenna (20.5 cm), however, and so does not require a lot of special handling.Also, tested it against the RD-332 which is a very long whip (38 cm) but there was no comparison. Even the stock antenna beat the 332.In short: does what it advertises, more sensitive, cleaner reception than stock. I have not yet tested transmission range or sound quality on transmit, but based on the reception test, but it still seems like a worthwhile upgrade.We have a set of six GM-30s in a charger base, and I will be acquiring four more of these antennas to fit up the other radios. (We’ll keep the stock antennas as a spare or for strictly close in work. )Works, improvement is worthwhile.

The media could not be loaded.  Works great with wouxun kguv9g. Better than the factory antenna by far.

Perfect fit, increase range for sure. better looking too.

First let me say Radioditty support was great. The antenna works well, but does not seat all the way (see photo). They also provide a small washer, but it is too small to fill the gap. This makes the radio susceptible for moisture or dust accumulating into the antenna and potentially the radio. Note the radio is not waterproof or water resistant (as advertised in the description). I discussed this with support. I was told it was acceptable and agree it doesn’t affect performance.

Bin sehr zu Frieden.

Ottima antenna

I’ve had many HT antennas. This one is performing very well so far. It seems to be sturdy and well made. Time will tell.73 VE7HJ

Die Lieferung war sehr schnell und die Antenne funktioniert auch sehr gut. Man kann damit sehr gute Reichweiten empfangen und senden.

Très bonne antenne en émission et réceptionssur les bande uhf vhf👌👌👍👍👍