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Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384
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20
© 2001 SGC, Inc.
pressed.
D. Momentarily depress ‘SAV’ (S2) and saved settings will
be recalled from displayed RX memory bin.
End of procedure
Additional Notes:
Note 1: Saving and recalling receive only memories
The two procedures are basically the same with the ex-
ception of the auto-manual slide switch.
SET TO MANUAL SAVE
SET TO AUTO RECALL
Note 2: Fine tuning a transmit frequency
Auto tune the frequency as normal.
Switch auto-manual to manual
Fine tune settings with S3-S8
While transmitting, depress ‘SAV’ (S2) to update trans-
mit memory bin.
8.0 Do-It-Yourself Light-Bulb Dummy Load
Any time that a transmitter is used, it must be outputting into a load.
A load is anything that the output power can be pumped into. If the
transmitter is operated without any sort of load connected, the final
amplifier stage could become severely damaged. The problem is that
you should never test a transmitter on the air for the first time, if you
are unsure about how to operate it, and if you are unsure whether it is
working properly. You could create harmful interference to other
stations.
To test transmitters without actually operating into an antenna,
dummy loads were created. A dummy load is a load that will dissi-
pate the energy from the transmitter instead of emanating it into the
ionosphere. Nearly all commercial dummy loads are large oil-filled
cans. These dummy loads change the transmitted energy into heat,
which is absorbed by the oil. Because different transmitters output
different amounts of power, different sizes of dummy loads must be
used. Dummy loads for typical amateur powers (<500 watts) are
relatively inexpensive and are readily available.
SG-239 Manual
page 20
Wednesday, October 17, 2001 08:31
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