Ultrabeam 6 Band Beam UB-20MX, 3/2 El. Moxon

Ultrabeam UB-20MX, RCU-06, 30m cable
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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 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. For other diameters see below.

Controller and cable included

The antennas are shipped with the RCU-06 controller with a a colour touch display, and 30m control cable with connectors installed ready to use. Other length see below.

Get in touch with us


Tel.: +49 (0)7276 9668–0
Monday to Friday
09-12 am / 02-05 pm

Technical Data
Weight [kg] 19.00 kgs
Boom Size 60 x 60
Rotation Radius (m) 3.5
Front/Back Ratio 14 MHz (dB) 25
Front/Back Ratio 21 MHz (dB) 27
Front/Back Ratio 28 MHz (dB) 30
Mono-/Multiband Multiband
Number of active Elements 18 MHz 2.0000
Number of active Elements 14 MHz 2.0000
Number of active Elements 28 MHz 3.0000
Number of active Elements 24 MHz 3.0000
Number of active Elements 50 MHz 3.0000
Number of active Elements 21 MHz 3.0000
Bi-directional mode Yes, on 15, 12, 10m
180° Direction Reversal Yes, on 15, 12, 10m
Gain 14 MHz [dBi] 7.9
Gain 10 MHz [dBi] 7.9
Max. Power [W] 3500 W
Boom length [cm] 290 cm
Supported Bands 10m, 12m, 15m, 17m, 20m, 6m
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