Click to Enlarge Model: GW/R-4PII Weight: 4.9 grams/ 0.17 oz. Antenna Weight: 1.2 grams / 0.4 oz. Antenna Length: 50 cm / 20 in. Size: 15 x 25 x 9.5 mm 0.59 x 1.0 x 0.37 in. Sensitivity: 4-5 uV Range: 150 m / 500 ft. Comes with vertical connectors and designed for negative shift transmitters. The range information shown below is from a ground measurement. The actual in-flight range will be much better. This product was added to our catalog on Thursday 25 January, 2007. All orders shipped insured.