M-7700 operations manual manual rev a page 1 ldg m-7700 external meter for icom ic-7700 ldg electronics 1445 parran road st. Leonard md 20685 phone: 410-586-2177 fax: 410-586-8475 ldg@ldgelectronics.Com www.Ldgelectronics.Com.
Page 2 table of contents introduction 3 jumpstart, or “real hams don’t read manuals!” 3 specifications 4 getting to know your m-7700 4 front panel: 4 back panel: 5 installation 6 setup 7 initial calibration 7 meter parameter selection 8 operation 9 application notes 9 base station use 9 remote use 9...
Page 3 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 ...
Page 4 specifications • giant, 4.75” (diagonal) 500 µa analog meter movement. • s-meter on receive, drive current, drive voltage, power output, swr, compression level, and alc on transmit. • externally powered cool blue backlighting with adjustable brightness. • on/off switch for backlight. • dimens...
Page 5 back panel: the rear panel of the m-7700 has two jacks, a rocker switch, and two access holes for adjustments. The dc coax jack accepts a 2.5 x 5.5mm coaxial dc power cable, 12v, 250ma, center positive. External power is only required if use of the internal backlight is desired. The meter fun...
Page 6 installation the m-7700 is intended for indoor use only; it is not water-resistant. If you use it outdoors, (qso party outdoor barbecue, for example) you must protect it from rain. Place the m-7700 in a convenient location near the ic-7700. The included cable has a three foot reach. The meter...
Page 7 setup icom included two menu items in the setup menu system of the ic-7700 transceiver, to allow configuring an external meter such as the m-7700. Initial calibration as shipped from the factory, the m-7700 is calibrated, but may require some adjustment due to shipping or other factors. When ...
Page 8 meter parameter selection with the transceiver still in the acc menu, on the external meter output item, rotate the main tuning knob to choose which radio parameter is displayed on the m-7700 during operation. There are eight options from which to choose: external meter output selection meani...
Page 9 operation operation of the m-7700 is completely transparent. Simply operate the transceiver as usual, and the m-7700 will display the selected parameters during transmit and receive operation. If the display of different parameters is desired, simply repeat the meter parameter selection as re...
Page 10 care and maintenance the m-7700 tuner is essentially maintenance-free. The outer case may be cleaned as needed with a soft cloth slightly dampened with household cleaning solution. As with any modern electronic device, the m-7700 can be damaged by temperature extremes, water, impact, or stat...
Page 11 two-year transferrable warranty your product is warranted against manufacturer defects in parts and labor for two full years from the date of purchase. This two-year warranty is also transferable. When you sell or give away your ldg product give the new owner a copy of the original sales rec...
