New version, using modern BF998 and BCX54 semi conductors Real class-A circuitry, clean reception without . One coax connection. Broadband R/C coupling to the receiver, no transformer Technical Specifications: Frequency range: 10 KHz - 30 MHz Power: 12 - 15 volts at 150 mA Second order output point: more than + 70 dBm Third order output point: more than + 30 dBm Maximum output power: in excess of - 15 dBm PCB Size: 155 x 27mm Connector: BNC Feed line: 50 - 100 ohm coaxial cable up to 100 meter long Colour: as shown Material: PCB Package Contents: 4 x SDR Portable Receiver Note: The white characters on the product are random, don't accept the specified color To note please: Each antenna performs as good as its installation permits it to. Any active antenna is not working good inside ! It should be mounted outside and as high as possible. Place this Mini Whip antenna PCB inside a suitable enclosure of and mount outside . Probably for the enclosure you can use a piece of the PVC tube which available in diameters in a local store. Do not use metal enclosure! It 't work there! Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.