Eton G3 Optimizing Shortwave Reception, Tuning SSB Single Side Band, Using the DX/LOCAL Switch

GLOBE TRAVELER G3 OWNER’S MANUAL GLOBE TRAVELER G3 OWNER’S MANUAL

OPTIMIZING SHORTWAVE RECEPTION continued

BAND	MEGAHERTZ (MHz)	KILOHERTZ (KHz)
120 m	2.300-2.495 MHz	2300- 2495 KHz
90 m	3.20-3.40 MHz	3200- 3400 KHz
75 m	3.90-4.05 MHz	3900- 4050 KHz
60 m	4.750-5.1 MHz	4750- 5100 KHz
49 m	5.73-6.3 MHz	5730- 6300 KHz
41 m	6.89-7.60 MHz	6890-7600 KHz
31 m	9.25-9.95 MHz	9250-9995 KHz
25 m	11.5-12.2 MHz	11500-12200 KHz
22 m	13.57-13.87 MHz	13570-13870 KHz
19 m	15.005-15.825 MHz	15005-15825 KHz
16 m	17.48-17.9 MHz	17480-17900 KHz
15 m	18.9-19.02 MHz	18900-19020 KHz
13 m	21.45-21.85 MHz	21450-21850 KHz
11 m	25.67-26.1 MHz	25670-26100 KHz

TUNING SSB (Single Side Band)

SSB enables listening to shortwave two way communications using the single-sideband mode such as amateur radio, Morse code, weather-fax transmissions and other signals often referred to as ‘utility’ signals. The Internet and your local library are great resources to learn more.

To experiment with SSB, turn on the G3 and position yourself near a window if you’re in a building with stories above you. Tune to the 20 meter Amateur band, by pressing 14150 KHz with the keypad and then pressing the AM button to enter it. Turn on the SSB circuit by pressing the SSB button twice (don’t select SYNC). Note that SSB appears in the display and USB or LSB are to the right. Select upper sideband (USB) with sequential presses of the U/LSB button. Set the FINE tuning knob to its approximate center position. Put the sensitivity switch, on the left side of the radio, to the DX position. Fully extend the antenna and with the tuning knob tune slowly from 14150 to 14350 KHz, listening for anything that sounds like a human voice. Use the tuning knob to coarse-tune the SSB signal, then fine-tune with the –FINE+ knob.

TUNING SSB (Single Side Band) continued

This SSB circuit allows tuning of both upper and lower sideband signals. For best clarity of some extremely strong SSB signals, placing the DX/LOCAL switch (left side panel) in the LOCAL position (down) may be desirable.

USING THE DX/LOCAL SWITCH

The DX/LOCAL switch (left side panel) adjusts sensitivity. Use DX (up) as the default setting for maximum sensitivity to signals. If strong stations or SSB signals seem distorted, then use LOCAL (down). This switch does not function in FM mode.

USING THE SYNCHRONOUS DETECTOR

The synchronous detector can be used when listening to AM (medium wave) and shortwave broadcast stations. It may help to minimize inter- ference and to improve the signal quality. While listening to a station press the SYNC button. SYNC appears in the display as does USB or LSB to the right. You can sync on the Upper or Lower sideband by pressing the U/LSB button and noting which selection gives the clearer reception or improves the audio. Turn the synchronous detector off while tuning stations or when it’s not needed. Using the WIDE/NARROW button may also help. Using the synchronous detector does not always minimize interference or improve the signal. To turn the synchronous detector off, press the SYNC button.

WIDE/NARROW SWITCH

This is a selectivity switch on the right side of the radio, under the TUNE knob. Use WIDE when there is no adjacent frequency interference for the best audio fidelity. Use NAR. To reduce adjacent frequency interfer- ence, but minimizing audio fidelity.

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