Specifications

SMARTUNER MANUAL 39
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
© Nov2000 SGC, Inc. P.O. Box 3526, 98009 Fax: [phone] Tel: [phone]
E-Mail: [e-mail] Web Site: www.sgcworld.com
Radio HF/VHF
RF IN-OUT
RF GND
Antenna Coupler
Antenna Jack
GND
RADIO TEST PROCEDURE
1. Connect the transceiver light bulb load to the radio RF in/out jack.
2. Turn on the radio and set the CW mode.
3. Key the PTT switch on the microphone and look at the light bulb. If the light bulb
load is connected and the radio is transmitting, the light should turn on.
4. Set the power to LO.
5. Set the radio to SSB mode.
6. Key the PTT switch on the microphone and talk into the microphone. Notice that the
light turns on when you talk.
COUPLER TEST PROCEDURE
1. Connect the coupler to the radio.
2. Connect the coupler light bulb load to the SG-230 antenna jack.
3. Turn on the radio and the SG-230.
4. Set the radio to the CW mode.
5. Key the PTT switch on the microphone and look at the light bulb. The light should
turn on if the coupler has completed its' tuning cycle and if the radio is transmitting.
6. For further testing, follow steps 5-6 of the radio test procedure.
Note: The light bulb might not turn on immediately if the coupler has not yet been
tuned for the frequency of the transmitter. The output power (light-bulb brightness) is
greatest when the coupler is properly tuned.
This test will ensure that the radio and coupler are working properly.
7.0 Coupler Configuration
Schematic Q30102000, sheet 4 is the schematic diagram of the two basic coupler
networks. Note that the L network as viewed from the generator, may be configured as
either “C in” or “C out,” whichever is required by the load. In either case, the end of the
network containing the shunt C element will be the higher impedance end of the
network.
7.1 Schematic Diagrams
Schematic Q30102000, sheets 1 thru 6, are schematic diagrams of antenna coupler.
Connections to Smartuner