Related Manuals for LDG Z-11
Summary of Contents for LDG Z-11
- Page 1 Z-11 Automatic Antenna Tuner Manual Version 1.5G 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...
- Page 2 During tuning, the Z11 may draw up to 300 milliamps, but only for a few seconds. These exclusive LDG features make the Z11 ideal for portable, battery-powered HF operation.
- Page 3 - 2 - LEDs: Three LEDs show SWR while tuning or transmitting: green (6) indicates an SWR of less than 1.5, green and yellow together is 1.5 - 2.0, yellow (7) alone is 2.0 - 2.5, yellow and red togeth...
- Page 4 - 3 - and stop automatically. If the Tune button is pressed and there is less than 0.1 watts of power, the four front LEDs will flash to indicate that there was not enough RF to tune properly. The Tune button has some additional functions when used in combination with other switches. Pressing the Tune button and Ind Up switch together will set the High/Low impedance relay to the High impedance position.
- Page 5 - 4 - Set your transmitter or transceiver to transmit a continuous carrier of at least 0.1 watt and not more than 30 watts output. CW or FM are usually the most convenient modes for tuning. While transmitting the carrier, press and release the Tune pushbutton on the Z11 front panel. The tuning cycle will start, as indicated by the red Tuning LED.
- Page 6 For best results, balanced and random wire antennas should be fed through a balun such as the LDG RBA-1. The tuning bandwidth of the Z11 (usable frequency excursion before exceeding a 1.5 SWR) varies considerably with frequency band, ranging from about 75 kHz on 80 meters, to about 400 kHz on 10 meters.
- Page 7 Replace the case top; your upgraded Z11 is ready for service. You will return the old processor chip to LDG; the upgrade is sold by exchange only. The processors are recycled and reprogrammed to minimize future upgrade costs. Upgrades will cost $10-20 with chip exchange, and will be announced on our web site when available.
- Page 8 C21E C22E C21D C22D C21C 3904 RSIP1C .01uf +12sw Ind4Out Cap7Out Cap6Out Cap5Out C21F C21G CAPSIP Title Z-11 Auto Tuner Size Number Revision Version 1.4G Date: 7-Oct-2002 Sheet of File: C:\Projects\Protel\Genes_Protel_Files\Protel99SE\QRP\QRPZ131.ddb Drawn By: AA3AV C17C C17D C20C C20G C19B C19E...