JPC-12 7MHz-50MHz 100W Multi Band HF Shortwave GP Antenna QRP For Ham Radio. Packing weight: about 1.35kg Packing size: 36224cm 2. The shrinkage length is about 34.5cm, and the erection length is about 410cm 3. Frequency: can work in 8 bands (7mhz-50mhz) at 40.30.20 17.15.12.10.6 meters. Longitudinal wave: 40m swr band.