Alk-2 operations manual manual rev a page 1 ldg electronics 1445 parran road st. Leonard md 20685-2903 usa phone: 410-586-2177 fax: 410-586-8475 ldg@ldgelectronics.Com www.Ldgelectronics.Com ldg alk-2 two-port audio/linear/key switch.
Table of contents introduction 3 jumpstart, or “real hams don’t read manuals!” 3 specifications 3 important safety warning 4 getting to know your alk-2 4 front panel 4 rear panel 5 pinouts 5 block diagram 6 installation 7 operation 7 desktop / local operation 7 remote operation 7 application informa...
Introduction 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. Congratulations on selecting the ldg...
Important safety warning never install antennas or transmission lines over or near power lines. You can be seriously injured or killed if any part of the antenna, support or transmission line touches a power line. Always follow this antenna safety rule: the distance to the nearest power line should ...
Rear panel the rear panel of the alk-2 features three ports. Each port consists of an 1/8” stereo jack wired in parallel with two rca jacks. Each rca jack connects to one of the two circuits in the 1/8” stereo jack. When using a mix of 1/8” stereo plugs and rca plugs, the alk-2’s rca jacks follow th...
Page 6 for each of the three ports, port 1, port 2, and common, the 1/8” stereo jack pinout is as follows: block diagram the following is a block diagram of the alk-2:.
Installation to install the alk-2, attach either a 1/8” stereo plug or pair of rca plugs to each of the two switched ports, and also to the common port. Attach the supplied 12vdc coaxial power plug to the 2.5 x 5.5mm power jack, and apply 12vdc at 100 ma. The center pin of the dc power jack is posit...
• scanner or radio serial interface • receiver antenna selection • qrp transmit antenna switch or t/r switch. Note : if transmitting rf through the alk-2, keep swr less than 3:1 and power level no greater than 5 watts. Operation is not guaranteed above 30 mhz. It is recommended not to transmit rf th...
Returning your product for service returning a product to ldg is easy. We do not require a return merchandise authorization. Visit the customer support center and download the ldg product repair form. On the repair form tell the ldg technicians exactly what happened or didn’t happen and why you beli...
