DIAMOND SRH103 120/300MHz Airband Receive Antenna SMA-P 4.5cm Stubby Handheld Whip Product Introduction The SRH103 is a compact antenna designed specifically for the 120/300 MHz aviation band reception. This model features an SMA Male connector and serves as an upgraded version of the popular RH103 (BNC connector). Despite its short length, it is ideal for short‑range signal reception in areas such as airshows or near airports. Compared with the original antenna supplied with handheld devices, its sensitivity may be slightly lower, but it offers exceptional portability, making it perfect for users who need a compact aviation band antenna. Specifications Frequency Range: 120 / 300 MHz Total Length: 4.5 cm Weight: 15 g Connector Type: SMA-P (Male) Impedance: 50 Ω Type: 1/4 λ Note: This product is a reception-only antenna and cannot be used for transmission. FAQ Q1: What frequencies does the Diamond SRH103 antenna cover? A1: The Diamond SRH103 is strictly a receiving antenna engineered specifically for aviation bands, covering 120MHz and 300MHz frequencies. Q2: Can I use the Diamond SRH103 for transmitting? A2: No. The Diamond SRH103 is a receive-only (RX) antenna. Attempting to transmit (TX) using this antenna may cause permanent damage to your radio equipment. Q3: What type of connector does the SRH103 have? A3: It features an SMA-Male (SMA-P) connector, making it compatible with a wide range of popular handheld scanners and two-way radios that accept SMA connections. Q4: How long and heavy is this antenna? A4: The SRH103 is designed for maximum portability. It is an ultra-compact “stubby” antenna measuring only 4.5 cm (1.77 inches) in length and weighing just 15 grams. Q5: What are the best use cases for the SRH103? A5: Because of its short length, it is perfect for close-range aviation listening. It is highly recommended for plane spotters at airshows, near airport terminals, or anywhere you need highly portable airband reception without a long, cumbersome antenna.
