SG-303/307 WHIP ANTENNA MANUAL
© SGC 2007
HIGH PERFORMANCE HF SSB ANTENNA FOR MARINE AND MOBILE USE
ITEM # 55-27: SG-303 W/ MOUNT / ITEM # 55-67: SG-303 W/O MOUNT
ITEM # 55-28: SG-307 W/ MOUNT / ITEM # 55-69: SG-307 W/O MOUNT
DESCRIPTION
The SG-303 and the SG-307 are designed to radiate efficiently at HF frequencies from 2-30 MHz.
Both antennas provide reliable long range communications. Their short length permits
communication from a vehicle in motion (60 MPH or 100 KPH speed maximum). The antennas
must be used with an antenna coupler (SG-230 or any coupler with a similar specification).
SPECIFICATIONS
Specification
SG-303
SG-307
Maximum Input Power.
500 Watts PEP or CW
150 Watts PEP or CW
Operating Range.
2-30 MHz
2-60 MHz
Primary Loading Resonance:
11 Mhz
8 Mhz
Secondary Loading Resonance
22 MHz
25 MHz
Mounting
High Voltage, 4-way
Ratchet
High Voltage, 4-way
Ratchet
Ratchet mount material:
Stainless Steel
Stainless Steel
Maximum vehicle or boat speed:
60 MPH/100 KPH
(when erect)
60 MPH/100 KPH
(when erect)
Radiation:
Omnidirectional
Omnidirectional
Shipping weight:
10 pounds
8 pounds
Maximum total height:
9 feet
7 feet
Maximum shipping length
4.5 feet
7.5 feet
ITEMS SUPPLIED
1.
Loaded whip antenna (in two sections of 4 ft each for the SG-303)
2.
3 iinch, high voltage Delron insulator
3.
4-way stainless steel ratchet mount
4.
Special SGC heavy duty, rubber encapsulated base spring
5.
3 ft. of high voltage wire, one end terminated by a ring lug
6.
High voltage wall feed-through bushing (hole = .890 inch)
7.
3 ft of
¾
inch wide braided copper ground strap for coupler grounding
8.
12 releaseable tie wraps
9.
Lug to connect high voltage wire to coupler
10.
Manual