Hollyland Long Range Panel Antenna Ibuprofen Dosage Table for Fever and Pain HealthyChildren.org. There are 5 built in high gain panel antennas instead of previous 5pcs antennas, which can improve the transmission by 1000 ft. under same standard. And it can also largely decrease the interference from the backside. This product can be used for long distance transmission or multi units transmission. Comparing with the other ordinary antennas, the panel antenna can have better performance.