Very hard to tell your situation, but piecing together from your question and replies it appears the following is true:
- You can't put an antenna outside
- You want to listen to a distant UHF station using a scanner-mounted portable antenna (telescoping)
- You want to do this indoors
- An ST-2 indoors did not work
- You aren't sure about what cable to use to hook antennas to your scanner
Assuming the above are correct, then it is highly unlikely another portable antenna is going to work better indoors than the ST-2 UNLESS you had a cable/connector problem with the ST-2 and it was not setup correctly. Did you use the transformer adapter that comes with the ST-2 and another adapter to change from a 75 ohm coax F connector to the jack on your scanner? If not, your ST-2 connection is suspect.
If you want to pick this signal up indoors you are going to need to find a spot inside where the signal is strongest. Focus on two areas: Upper floors/attic and windows. If you have a window on an upper floor facing the direction of the signal you are trying to receive, start there. Take the handheld scanner and antenna with you to find the best spot. Once you've found that, you can decide what antenna will work. It may be a small directional beam for UHF. However, a simple window mounted TV antenna like an HD Blade might work. If you can get to the attic/crawlspace, try there too. Lots of attic options are possible.