1. The 048 antenna is a printed LDPA. We have used some optimized design techniques to significantly reduce the size of the antenna, and it can now be easily used with the for ULTRA. Using technology, we are now able to match the ultrawide range of 400MHz 8GHz with only 27x23cm, but with some loss of lowfrequency directionality. 2. 048 can be used for radio direction finding under the frequency between 1GHz 8.5GHz without requirements. It exerts a decent sensitivity of direction of the signal source when being held singlehandedly and changes directions along with the body. 3. The antenna's input resistance is rated at 50Ω, and loss fluctuates when the antenna is connected to a 50Ω source. In most frequency bands above 1GHz, the loss is about 10dB or less, and the VSWR is about 2. In the 400M 1GHz band, the loss is about 4.5dB or less, and the VSWR is about 4. The VSWR increases at frequencies below 400MHz.