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Often referred to as Long Wire Balun
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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.
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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.
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.
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Strip the end of the antenna lead-in wire and tighten it under the winged nut.
Connect the Long Wire Adapter to the receiver using a coaxial cable with a BNC
connector.
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) |
Specifications are subject to change without notice due to
continuous product development and improvement.
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Frequency
coverage 0.1 to 30 MHz