T-25/S Vertical
Mechanical/Electrical Data

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Mechanical Data

Radiator 25 ft. 7.5m
Al Tube Radiator O.D. 1.125-.5" 30-12mm
Wall Thickness 2 x .058" 2 x1.47mm
Al- Material 6063 T6 or 832 or similar
Al-Mg-Si 0.5 or similar
Wind Surface Area 2.2 sq. ft +/- 16 sq..dm +/-
Wind Survival Rating 80 mph +/- 130km/h +/-
Weight 17 lbs. 7.7 kg
Shipping Weight 20 lbs. 9 kg
Mast Diameter 1.8.-2.0" 45-52mm
Hardware All stainless steel

Electrical Data

Frequency Range 6-30 MHz (limited gain on 1.5-6MHz)
Typical SWR 1.5 : 1
Power Rating 1.5 kW out, US legal power
Feedpoint Impedance 200 ohm + 1 : 4 UN-UN-HF-transformer
Feedline 50 ohm coax
Tuning Line (part of kit) 50 ohm coax
Radiation Angles depend on mounting height (see ARRL Antenna Book)

Typical Gain in dB/d

10-30 MHz 0 dB/d up to +2 dB/d depending on f
6-10 MHz minus 2 dB/d up to 0 dB/d depending on f
1.5-6 MHz minus 12-15 dB/d to -2 dB/d depending on f; 75/80m band about minus 6-8 dB/d +/-, depending on space for radials.

* All data typical.


[Working Principles]
[Parts Supplied]
[Mechanical/Electrical Data]

Sommer Antennas
P.O. Box 710
Geneva, FL 32732
Phone: (407) 349-9114 | Fax: (407) 349-2485