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308 Industrial Park Road
Starkville, MS 39759 USA
(662) 323 -953 8 FAX: (662) 32 3-655 1
INSTRUCTION MANUAL
GENERAL DESCRIPTION
The Model GPG-2B is a 5/8 wave gain ground
plane which covers the frequency range of
142-185 MHz. The design is optimized for
maximum performance in the 2-meter Amateur
band (144-148 MHz), and provides 3.4 dB
gain over a 1/4 wave ground plane antenna.
The GPG-2B, when tuned for a specific
frequency within 142-185 MHz will have a
VSWR at resonance of less than 1.4:1. Typical
VSWR at resonance within the 2-meter
Amateur band is less than 1.2:1. The 2:1
VSWR bandwidth is greater than 4 MHz.
This antenna is designed to be fed with any
standard 50 ohm coaxial cable, but for runs
over 50 feet, RG-213/U is recommended
because of its lower losses and higher power
The mechanical strength of the GPG-2B has
been greatly improved over previous models.
Also, stainless steel hardware is used in most
places on this antenna.
VSWR at Resonance................................................................................. less than 1.4:1
Power Gain .... ...
Power Input..... ..
Lightning Protection
Height(nominal).........
Wind Area.............
Maiximum Mast OD .................................................................................. 15/8 inches
(41.3 mm) Hardware..........................................................................18-8 stainless steel
5/8 Wave Ground Plane for 142 -185 MHz
Ph:
SPECIFICATIONS
.... ................................................... 3.4 dB over quarter wave
................................................................................100 watts'
. ........................................................................... DC ground
... ..............................................................................50 inches
....................................................................0.30 sq. ft. (.03 sq m.)
GPG-2B
The GPG-2B will mount on mast sizes up to 1
5/8 inches in diameter.
Figure 1
Overall View - GPG-2B
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Summary of Contents for Hy-Gain GPG-2B
- Page 1 (662) 323 -953 8 FAX: (662) 32 3-655 1 INSTRUCTION MANUAL GENERAL DESCRIPTION The GPG-2B will mount on mast sizes up to 1 5/8 inches in diameter. The Model GPG-2B is a 5/8 wave gain ground plane which covers the frequency range of 142-185 MHz.
- Page 2 CAUTION'' ASSEMBLY Unpack the antenna and check the parts against Do not rotate the base insulator when the Parts List and drawings. orienting' radials. Breakage of wire can occur. It is best to always leave one screw in Remove the two (2) screws that are placed place while installing the radials.
- Page 3 871674 BaseAssembly,GPG-2B w/lower assembly ………..........1 179690 Radials, GPG-2B…...………………………………..........4 Radiator, diameter upper radiator...……...........1 175030 3/8" 871675-1 Parts Pack, GPG-2B ..................1 455655 Caplug, 3/8......……...............1 543792 U-bolt, 5/16" x 15/8" x 2 1/4"……..............1 555747 Nut, 5/16" - 18 hex ......……............2 554071 Nut, #10-24, hex ....…..............5 567080 Lockwasher, 5/16", split..................2...
- Page 4 Hy-Gain Warrants to the original owner of this product, if manufactured by Hy-Gain and purchased from an authorized dealer or directly from Hy-Gain to be free from defects in material and workmanship for a period of 12 months for rotator products and 24 months for antenna products from date of purchase provided the following terms of this warranty are satisfied.
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