RFD-MXY4B-85, 4 Bands HF Moxon-Yagi for 40, 20, 15 and 10 m Band.

Made to order — Production begins after order confirmation, with dispatch within 20-25 days. Introducing the RFD-MXY4B-85, a 4-band HF Moxon–Yagi designed for the classic amateur bands: 40, 20, 15, and 10 meters. This unique design combines the advantages of both Moxon and Yagi configurations to create a highly efficient directional beam covering four major HF bands—something every serious ham operator aspires to have. On 40 meters, instead of using conventional loading coils, the design incorporates capacitance hats. This approach reduces the overall element width while maintaining the true performance characteristics of a full-size Moxon beam. On the 15 m band, where the antenna operates as a 2-element Yagi, a special reflector phasing method has been applied to enhance performance. A standard 2-element Yagi typically offers only a moderate front-to-back ratio; this optimized phasing technique significantly improves that characteristic. This antenna is built for serious DXers and contesters who prioritize performance above all else. It delivers strong directional gain, improved rejection, and reliable on-air confidence. Constructed with high-quality materials and a heavy-duty mechanical design, the RFD-MXY4B-85 is engineered to withstand high wind loads and demanding operating conditions. Electrical Specifications Bands 40m 20m 15m 10m Gain( Free Space) 6.08 dBi 6.01 dBi 5.91 dBi 7.12 dBi Gain ( @ 20m AGL), +5 dBi Ground Reflection 11.5 dBi 11.32 dBi 11.7 dBi 12.13 dBi F/B 29.59 dB 28 dB 17.87 dB 39 dB VSWR <1.5( 200 KHz) <1.5(350 KHz) <1.5(500 KHz) <1.5(700 KHz) Impedance 50 ohm Power rating/Matching 3 KW+/ 1:1 Maxwell choke Radiation Pattern Directional Mechanical Specifications Boom Length 7.05 m Boom Dimension 60*60mm+50mm*50mm+40*40mm Mounting Mast Diameter 2 Inch Width of the Antenna 15.9 m Tapered Elements 40 mm to 9.5 mm Connector SO-239 Turning Radius 8 m Wind speed Survival 140 Km/h Antenna Weight 60 Kg Shipping Box Dimension 2 m( 3 Boxes) Material used Aluminium 6063, 6061, SS-304, Industrial Grade Polyamide Clamp (Heavy Duty)