New version, using modern BF998 and BCX54 semi conductorsReal class-A circuitry, clean reception without .One coax connection.Broadband R/C coupling to the receiver, no formerTechnical Specifications:Frequency range: 10 KHz - 30 MHzPower: 12 - 15 volts at 150 mASecond order output point: more than + 70 dBmThird order output point: more than + 30 dBmMaximum output power: in excess of - 15 dBmPCB Size: 155 x 27mmConnector: BNCFeed line: 50 - 100 ohm coaxial cable up to 100 meter long Colour: as shownMaterial: PCBPackage Contents:1 x SDR Portable ReceiverNote: The white characters on the product are random, don't accept the specified colorTo 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 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.