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Summary of Contents for LDG TW-2
- Page 1 LDG TW-2 Talking Wattmeter For VHF and UHF LDG Electronics 1445 Parran Road, PO Box 48 St. Leonard MD 20685-2903 USA Phone: 410-586-2177 Fax: 410- 586-8475 ldg@ldgelectronics.com www.ldgelectronics.com...
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Page 2: Table Of Contents
LDG pioneered the automatic, wide-range switched-L tuner in 1995. From its laboratories in St. Leonard, Maryland LDG continues to define the state of the art in this field with innovative automatic tuners and related products for every amateur need. -
Page 3: Jumpstart, Or "Real Hams Don't Read Manuals
Jumpstart, or “Real hams don’t read manuals!” Ok, but at least read this one section before you transmit: 1. Attach the RF input jack (right connector when viewed from back) to your transmitter or transceiver with a 50 ohm coaxial jumper cable. 2. -
Page 4: Getting To Know Your
Band Selection: FWD and SWR buttons pressed together for more than 1 second sets the frequency band Readout resolution is 0.1 watt. There is no range switch; the TW-2 auto-ranges from 0 to 250 watts. There is no On/Off switch; the TW-2 automatically powers up when you press a button,... - Page 5 On the rear panel, there are two SO-239 RF connectors. The right-hand connector is the RF input (labeled "Radio") for connection to your radio, and the left-hand connector is the output to your tuner, amplifier or antenna (labeled "Antenna"). The 2.5 x 5.5 mm jack coaxial DC power connector is on the lower right.
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Page 6: Installation
Your TW-2 requires 12 volts DC at 200 ma. Connect a suitable power supply to the 2.5 x 5.5 mm coaxial DC input jack using the provided 2.5 x 5.5 mm jack coaxial power connector (center positive). -
Page 7: Volume
FWD and SWR together for about a second. When the speaker plays a fluttery tone, release both buttons; the TW-2 will announce the next band: 54, 144, 220 or 440 MHz. To check the presently set band, press FWD and SWR together for less than 1 second and release before the fluttery tone;... -
Page 8: Voice Operation
SWR. To place your TW-2 in Tone mode, simply press and hold any of the three buttons for more than 1 second before applying RF. The TW-2 will play a fluttery beep to indicate it has changed to Tone mode;... -
Page 9: Application Notes
After 30 seconds with no RF present, the TW-2 automatically reverts to Speech mode (verbose or terse, whichever you have set). You can also manually reset it to Speech mode by pressing and releasing any of the buttons. The TW-2 will beep to indicate that it has returned to Speech mode. Application Notes The TW-2 is primarily intended for visually impaired hams, and those of us more "experienced"... -
Page 10: Care And Maintenance
If you need to return your TW-2 to us for service, package it carefully, keeping in mind that we will re-use your packaging to return the unit to you. A self-addressed return-shipping label, while not required, will help insure speedy and accurate delivery of your repaired unit.
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