MODEL PRO-57-B - PRO-57-B-3 (3" OD BOOM)
  • 10, 12, 15, 17, 20, Meter
  • 7 Element
  • 3 Elements on 12, 15, 17, 20
  • 4 Elements on 10
  • No measuring
  • Pre-drilled
  • Color coded
  • 18-8 & 300 series Stainless Steel
    •
    Frequency, MHz
    		 28, 24, 21, 18, 14
    Power Rating, watts CW
    		 2500
    Power Rating, watts SSB
    		 5000
    Power Rating, AM/FM
    		 600
    Power Rating, RTTY/AMTOR
    		 600
    VSWR at frequency
    		 1.0/1 to 1.6/1
    Forward Gain, dBd 10 meters
    		9.4
    Forward Gain, dBd 12 meters
    		8.3
    Forward Gain, dBd 15 meters
    		 8.5
    Forward Gain, dBd 17 meters
    		8.5
    Forward Gain, dBd 20 meters
    		8.5
    Front-to-Back Ratio, dB 10 meters
    		20
    Front-to-Back Ratio, dB 12 meters
    		15
    Front-to-Back Ratio, dB 15 meters
    		20
    Front-to-Back Ratio, dB 17 meters
    		23
    Front-to-Back Ratio, dB 20 meters
    		20
    Boom Length
    		24 ft 7.32 m
    Maximum Element Length
    		 27.5 ft 8.38 m
    Turning Radius
    		 18.33 ft 5.59 m
    Mast Size hardware (equipped)
    		 2 in 5.08 cm
    Assembled weight
    		 92 lbs 41.73 kg
    Assembled weight (3" OD Boom)
    		 106 lbs 48.08 kg
    Wind Surface Area
    		 11 sq ft 1.02 sq m
    Wind Load, EIA Standard 80 MPH
    		 280 lbs 127.01 kg
    Warranty
    		2
    Recommended Coax
    		Belden RG-8 / RG-213
    Options (E-mail for details.)
    		30, 40 Meters, 3" boom

    KS1S's Mosley PRO-57-B

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    "Such a compact little monster!..."  WX3K
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    "Great job to everyone at Mosley!  Thank you for my PRO-57-B."  KB6JOX
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    "This antenna is as good today as it was the first day I mounted it on my tower back in the summer of 1991..." KS1S
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    UPGRADE  YOUR PRO-57-B!

    Conversion to 40 or 30 meters is possible. Add a rotatable dipole or two active elements.  See Conversion Kits for more details. 
     

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