Here's a $5 1.2 gHZ Antenna for AO-92

Clint Bradford

Here are Kent's plans for building a "cheap and fairly easy" 1.2gHZ handheld 
antenna for working the 1.2 gHZ uplink on AO-92 ...

Here's another DIY project, but I haven't heard of any results from one of these yet -

If you want to go commercial, HRO has the Comet/NCG CYA-1216E in stock.

It is an "oversized" item - add $15 for shipping. Its specs ...

1240-1300MHz 16 Element Yagi

Gain: 16.6dBi
VSWR: 1.5:1 or less
Max Power: 100 watts
Polarization: Vertical or Horizontal
Length: 4 ft 5 inches
Weight:  2 lbs. 11 ozs
Mounting Mast Diameter:  1.25-2.50 inch
Connector:  N-Type
Construction:  Aluminum, pre-assembled

Clint Bradford

The Comet CYA-1216E can be made "portable" by just clamping on a short 
piece of mast at the end.