Ultrabeam UB-50 3-Element Yagi 6 – 40m
SKU Part Number: 12215
Ultrabeam UB-50 3-Element Yagi 6 – 40m 5.3m boom length 10.6m max. element length 3 elements fullsize on 6–20m Rotary...
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£3,354.95 £2,795.79
Availability: In stock

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Ultrabeam UB-50 3-Element Yagi 6 – 40m

  • 5.3m boom length
  • 10.6m max. element length
  • 3 elements fullsize on 6–20m
  • Rotary dipole on 30 and 40m
  • Square boom 60x60mm
  • No truss, optional truss kit available

The UB-50 is a very special antenna model in the Ultrabeam range, it is a compact beam which covers the amateur radio bands from 6 to 40m. This antenna works as a 3 element fullsize beam on 6 to 20m. When working on 30 and 40m the two elements in front are retracted, the rear element becomes the radiator, a rotary dipole. To accomodate the length of a full size dipole for these frequencies the copper band is turned in parallel to the boom. The result is a good SWR and high efficiency nearly identical to a linear fullsize dipole. With the folded element the rotating radius is only 5.6m! The element holders of the UB-50 are reinforced to carry the added weight on the elements.

The UB-50 was designed - as all Ultrabeam antennas - for operations on shortwave. The antenna also works on 6m but not with very good properties. For 6m the element distance is too small, due to the short boom. Working the occasional QSO will be possible with the use of a tuner. Much better results are achieved with the optional 6m kit. This kit adds two passive elements for 6m, which are mounted on the boom between the existing elements. With these extra elements the UB-50 antenna has a gain of approx. 8.2 dB and 20 dB front/back ratio.

For switching between the configuration as 3 element (6-20m) and as rotary dipole (30 & 40m) a coaxial relay is included, it is automatically engaged by the controller. This relay requires two additional wires in the control cable.

For this antenna we offer an optional truss kit for the elements. This kit contains a support pillar, which is installed vertically on the boom, plus guying ropes with all mechanical hardware required to install the guy wires to the extremities of the boom.

  • Included in shipment
  • Antenna 12215
  • Touch Screen Controller RCU-06
  • 30m control cable with connectors, ready to use. For other lengths see below.
  • Mast Clamp for 50 mm rotor tube diameter.


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Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request.

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Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.

For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link below and return to ML&S with the faulty product.

International Warranty information

Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, sales@hamradio.co.uk