WISCO international (Sinclair- Antennas/ SG217/SG238)

SG217

The SG217 is a low cost frequency-adjustable antenna with omnidirectional radiation pattern and 3 dBd gain.
The SG217 is field adjustable to resonance over the frequency ranges 118-136 MHz or 138-174 MHz.
The SG217 is an ideal antenna for leased system service, being quickly and easily adjusted to each new frequency as needed.
It is an excellent antenna to stock for reuse or resale. Contact your Sinclair representative for detailed specifications on low band version (118-136 MHz).

SG238

The SG238 is a broadband omnidirectional antenna offering a low VSWR over the 118-136 MHz frequency range.
Constructed of selected aluminum alloy and stainless steel, the SG238 is designed to withstand winds of 110 mph while supporting 0.5 inches of radial ice.
The antenna is at DC ground potential for lightning protection.

Electrical		SG217	SG238
Frequency Range	MHz	138-174	118-136
Bandwidth 1.5:1 VSWR 2.0:1 VSWR	MHz	1% N/A	N/A 15.6%
Polarization	dB	Vertical
Pattern		Omnidirectional
Nominal Gain	dBd	2-3	Unity
Vertical Beamwidth (nom.) (half power points)	Deg	40	71
Power Rating	Watts	250
Lightning Protection		DC Ground
Termination		'N' Male

Mechanical		SG217	SG238
Height	in (mm)	96 (2,438)	67 (1,702)
Width	in (mm)	46 (1,168)	26.5 (673)
Weight	lb (kg)	6.5 (3.0)	6.0 (2.7)
Rated Wind Velocity	mph (km/h)	125(201)
Rated Wind Velocity with 0.5 in (12.7mm) radial ice	mph (km/h)	85 (137)	110 (177)
Horizontal Thrust at rated wind velocity and ice load	lb (kg)	47 (21.3)	65 (29.5)
Mounting Information	Two clamps are provided to mount antenna on a 0.75 in (19.05 mm) to 2.38 in (60.3 mm) O.D support pipe