Improving UHF whip antenna reception

[VISN]

I picked up one of these recently DSTV Drifta - and it is used to receive dvb-h signals - handheld digital tv. I am on the fringe area for reception, climbing a few meters onto the roof gives me 80% signal - up from zero.

I want to improve the reception of the device whilst keeping it indoors, this suggests an external antenna. The device has a whip antenna, it is 13 cm long. I have no idea of the transmission frequency, I expect it to be somewhere in between 540-700Mhz. The device does not have an external antenna input, and I am trying to figure a way to improve the reception.

How do I couple an external antenna to a whip which does not have a ground connector? I tried to use an indoors booster to feed the signal directly to the whip, but it showed no signal. Is there a way to create a false ground to the device without busting it open? Will some type of reflector help improve the snr to the whip?

 

[RCinFLA]

If your indoor reception is poor you might have enough isolation to put an outdoor UHF antenna pointed in direction of transmission. Run cable into house and through a UHF TV amplifier. Output of UHF TV amp to a small whip UHF antenna inside your house.

Again, you need enough isolation from outside to avoid direct and amplified retransmitted signal from interferring with each other.