Ultrabeam UB-20MX 6 – 20m
SKU Part Number: 12212
Ultrabeam UB-20MX 6 – 20m 2.9m boom length 7m max. element length 3 elements on 6-15m 2 elements Moxon on 17-20m Square boom...
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£3,415.44 £2,846.20
Availability: In stock

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Ultrabeam UB-20MX 6 – 20m

  • 2.9m boom length
  • 7m max. element length
  • 3 elements on 6-15m
  • 2 elements Moxon on 17-20m
  • Square boom 60x60mm

This is the smallest Ultrabeam antenna manufactured by WiMo. The UB-20MX is a very compact antenna solution for the bands from 6 to 20m. The antenna is only 2.9m long, the max. width is 7m and the weight only 19 kg. This is ideal for terraced house or other situation where very short antenna elements must be fitted into the available space. On 17 and 20m the UB-20MX works as a 2 element 'Moxon' antenna, on 6 to 15m as a fullsize 3 element beam. The Moxon construction still yields a respectable gain of 5.8 dBi with an excellent fron/back ratio. On the other bands this antenna is performing nearly like a traditonal 3 element beam.

For switching between the configuration as 3 element (6-15m) and 2 element beam (17 & 20m) a coaxial relay is included. This relay is automatically engaged by the controller, it requires two additional wires in the control cable.

6m Option

For this yagi we offer an optional one element 6m kit. This turns the 3 element Yagi into a 4 element for 6m. The gain and front to back ratio is improved on the 6m band. Of course you can use this antenna also on 6m without this kit. The optional 6m element is not variable in length, it is made of conventional aluminium tubes. On the other bands this passive element does not influence the pattern negatively.

  • Included in shipment
  • Antenna 12212
  • 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.


We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.


If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:

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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.

Warranty Terms and Conditions

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