HYS-771N ANTENNA

[WRZA235]

Can you use the HYS-771N FOR GMRS? I think I might of bought the wrong kind.

THANKS

[OffRoaderX]

You COULD, but it would not function optimally because it's not made for/tuned for the 462-467Mhz range of GMRS. 
If you bought this specifically to use with your GMRS radio then yah, you bought the wrong kind.

[WRXB215]

As @OffRoaderX said it isn't optimal. I have an Abbree 771 UHF/VHF and an Abbree 771 GMRS. The both work for GMRS but I haven't tested them with a meter to see the SWR difference. They are in fact slightly different in length but it doesn't take much to make a significant difference. That being said, the HYS-771N supposedly covers 136-174Mhz/400-470Mh with center frequencies being 144/430MHz. So, going up to 470 covers GMRS but it is up at the top of the range. Also it is still a dual band antenna which will not be as well tuned as an antenna tuned specifically for GMRS.

[WyckedKnight]

Hello, I have the HYS-771N SMA FEMALE GMRS Antenna and I'm getting a SWR of 19.9 on my Tidradio H* GMRS.  I would avoid using this antenna. 

[BoxCar]

You can't measure SWR on handheld radio antennas without very specialized equipment.

[WRUE951]

1 hour ago, BoxCar said:

You can't measure SWR on handheld radio antennas without very specialized equipment.

A ground plane plate???

[BoxCar]

Not even close. It requires a chamber and precision measuring and generating equipment to mimic the ground planes provided by the radio itself and the person holding the device.

[WRTC928]

SWR isn't really a big deal with HTs because they're not putting out much RF energy. The radio can stand a high SWR without damage. It may get a little warm, but that's about it. If the radio was getting warmer than I thought normal, I'd throw away the antenna and use a different one, but so far, that hasn't happened. Most mobile/base units have a circuit to disable transmit if the SWR is too high. A notable exception is the Anysecu WP-9900. Keying up for even a few seconds on an antenna with an SWR higher than about 4.0:1 will turn your radio into a paperweight. I really like the concept of the WP-9900, I just wish they'd address some of its shortcomings. But for $89, I guess you can't expect too much.