Its a tri band.. are you running any two, one or all three bands? That will make a difference..

In our area, we have 220 repeaters but zero air time.

You can get a nice dual band VHF/UHF antenna off ebay for not too much money, and toss in a pigtail adapter to the SMA on your radio.

Tell us more, we may be able to narrow it down more.

EB