I used those (or similar) on our MTS2000's/XTS2500's on my 800MHz system back in the day.
Hard to beat.
They worked better than the Motorola stubbies by a slight margin.
We did try the 800MHz dipoles:
NAF5039A NAF5039 8505884R01 - Motorola Antenna, Dipole 806-870 Mhz
shopwiscomm.com
but never saw enough of an improvement to offset the annoying factor of those.
Yeah, ditto.
Seems like there are a ton of factories in China cranking out fake Motorola antennas. I've tested a few and found them often not to be on the frequency they claim. They seem to sell them by the pound on Amazon and e-Bay.
@ the OP:
It really is worth the additional cost to get the -real- Motorola antennas.
www.shopwiscomm.com is a good source, never received a questionable antenna from them:
NAF5037A NAF5037 - Motorola OEM Halfwave Whip, 806-870 Mhz Motorola NAF5037A is an 806–870 MHz, 1/2-wave, 7-inch flexible whip antenna. This antenna is compatible with XTS5000, XTS3500, XTS3000, XTS2500, XTS1500, PR1500, XPR 6580, XPR 6380, MT1500, HT1000, and SABER Radios.
shopwiscomm.com
8505241U11 - Motorola OEM Flexible Whip Antenna, Dual Band, 764-870 MHz, 7in This antenna was engineered to maximize range. A rugged, capless design provides durability and maximum flexibility. This antenna operates in the 764–870 MHz range.
shopwiscomm.com
I've still got guys at work that want the 800MHz stubbies. I try to discourage it, as there is a slight penalty on the RX signal, but it's not too bad. If you really want to try one, get a real one:
8505241U06 NAF5042 - Motorola OEM Stubby Quarterwave, 800/900 MHZ Band, 806-941 MHz - "WHITE" Color Code 3.4" Length
shopwiscomm.com