DTR's with stubby antenna

[Batman]

would like to replace this stubby antenna with a 1/4 wave. are the antenna outputs 50 ohm or whatever the ht standard is? Ie: can i put a connector on there and replace the stubby antenna's with 900 mhz 1/4 waves or even 900 mhz dipoles?

I know about part 15 certification, warranty, etc so let's not have this go down that path please.

i know these radios exact same chassis are now made with 1/4 wave antenna's i just want to upgrade, but i am not sure if the output is exactly the same as their newer counterparts as far as output impedance.

also would like to know what the newer models are using for an antenna connector? SMA?

[motorola_otaku]

If you're referring to the ones that have detachable antennas, they use the same SMA connector and antennas as Motorola 900 MHz Jedi radios. So anything you have in the way of adapter cables or antennas for those radios will also work. I would worry about feed line loss using one with a mag-mount antenna on the car though.

[Tom in D.C.]

Speaking from sad personal experience, the feedline loss when using a 900 mHz low-power transceiver with a mag mount antenna was, to put it mildly, horrible. A contributing factor was the use of RG58 cable (definitely not a smart move).

[Batman]

well i am not looking to go antenna crazy. i just want to ditch the stubby antenna's and go with either a 900 dipole or 1/4 wave.

love to add a dipole ducky antenna, but i suspect that may not work so hot unless the output is 50 ohms and there is a place to attach the ground side of the antenna.

i looked up the certification and it seems the antenna is held in with a screw similar to a cordless phone or am/fm radio rod antenna.

i could not tell if there was a spot for a ground if i were to add an sma for a dipole antenna.

i bet a dipole would be a big improvement over the stubby.

[wavetar]

Motorola claims 20% better range with the stubby, and 40% better with the long antenna, over the first generation fixed antenna.