Search results
Table shows typical SWR relative to installed wire length. SWR will vary based on topography, proximity of nearby structures, configuration of the antenna wire and choice of ground or counterpoise. For best results, use the longest wire shown on the table that will fit your installation constraints. Installing the antenna wire as an Inverted L ...
Table shows typical SWR relative to installed wire length. SWR will vary based on topography, antenna wire configuration and use of ground or counterpoise. For best results, use the longest wire shown on the table that will fit your installation constraints.
With the 9:1 voltage unun and wire lengths suggested in the below tables the antenna should present non extreme impedances for all HF amateur band frequencies. This page is far from complete and represents the ongoing investigation into this type of antenna.
For best results, use the longest wire shown on the table that will fit your installation constraints. Installing the wire as an Inverted L can change the feed point impedance and may require tuning (changing overall length of the wire) for best coverage of all HF bands.
The following tables show the recommended lengths to use for the antenna wire based on the bands you wish to cover. These are based on the use of a sloper configuration with the unun near ground level but final
Model 9135 - 9:1 Unun 1.5 - 54MHz - 5kW. Current Production Time 7-9 Business Days. This design is excellent for matching both long and short length unbalanced long wire antennas for multiband use and will allow the internal tuner of most rigs to match a single long wire antenna.
The document provides recommended wire lengths and typical SWR values for Unun models 9130, 9132, and 9135. It includes a table showing SWR levels for various wire lengths and frequency bands. The document also discusses installation methods and best practices for using the Ununs.
