Such impedance matching usually results in a significant signal strength increase (up to 17dB in some cases, and approximately 5dB on average), compared to the long wire antenna connected directly to the antenna input of the receiver.
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Often referred to as Long Wire Balun, this device is used to
match the impedance of a long wire HF antenna to a 50 ohm input
impedance of a receiver.
Such impedance matching usually results in a significant signal strength increase (up to 17dB in some cases, and approximately 5dB on average), compared to the long wire antenna connected directly to the antenna input of the receiver. |
The WiNRADiO WR-LWA-0130 Long Wire Antenna Adapter is designed to work on medium and short wave bands, covering a frequency range from 0.1 to 30 MHz. It is especially suitable for use with WiNRADiO shortwave receivers, such as the WR-G303i receiver.
Unlike most conventional antenna adapters, the WiNRADiO WR-LWA-0130 Long Wire Antenna Adapter employs a dual broadband transformer technique which offers an improved performance over single-transformer devices.
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Features
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Installation
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The adapter is connected to the receiver via a BNC connector and a
suitable low-loss coaxial cable.
For outdoor installation we recommend the use of Coax Seal applied over the BNC connector, for additional weather-proof protection. |
Technical Specifications
| Type | Dual-transformer passive impedance adapter |
| Frequency range | 100 kHz to 30 MHz |
| Impedance ratio | 1:9 |
| Connectors | BNC (receiver side) M4 screw with winged nut (antenna side) |
| Enclosure | Die cast aluminum |
| Size | 60 x 35 x 30 mm (2.3 x 1.4 x 1.2 in) (excluding connectors) |
| Weight | 105 grams (3.8 oz) |
Frequency
coverage 0.1 to 30 MHz