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UN4964, double unun de rapports 1:49 + 1:64
UN4964
New product
Dual impedance step-down Unun ratios 1:49 + 1:64 to easily design a 1/2 wave EFHW antenna usable in multiband by harmonics because fed from one end. Ideal for testing different configurations and wire lengths! Outputs on screws with butterfly. A short wire serving as a counterweight can be installed
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Data sheet
| Puissance admissible - Max. power | 400 W PEP |
| Impédance - impedance | 50 ohms |
| Connecteur - Connector | SO-239 (PL) |
| Diamètre - Diameter | 60 mm |
| Poids - Weight | 210 g |
More info
UN4964 Enclosure – Dual 1:49 + 1:64 Unun for EFHW Antennas
The UN4964 is a dual 1:49 + 1:64 Unun designed for building efficient and versatile End-Fed Half Wave (EFHW) antennas. It allows the construction of ½-wave antennas usable, through harmonics, across the HF amateur bands, and provides wideband reception from 100 kHz to 200 MHz with a simple insulated wire.
Using a ½-wave wire for 80 m combined with an antenna tuner gives access to most HF bands.
The unit features a rugged 60 mm aluminum body for superior strength and weather protection.
Equipped with a Teflon (PTFE) SO-239 chassis connector with gold-plated center pin, it ensures excellent conductivity.
Two wing screws on the top (1:49 and 1:64 outputs) make antenna wire connection easy (only one output should be used at a time).
A side screw allows connecting a short counterpoise wire (≈ 0.05 λ, e.g. 2.1 m for 7 MHz).
Versatile, durable, and ready to use – the UN4964 is the heart of your high-performance EFHW antennas.
