DATAKITS® from the Datak Manufacturing div. of LKG Industries, Inc.
copyright ©2003 LKG Industries, all rights reserved.

This is the 14th KITS page
(from page 211 in New 2003 Philmore catalog)
 (Click on any photo for larger view)


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Our audio amplifier kit works very well, but if your input is a tape head, magnetic phono cartridge or electric mike, the input level may be too low to do the job. This small preamp can be used in these applications; plus, we have included a mike that may be used with the circuit. Power at 6V to 12V (current at 12V is 3mA, only 2mA at 9V). The gain is more than 40 dB.

No. 80-980 Preamp kit



17-1/2 Watt Mono Amplifier

A high quality audio amp that can operate on a low voltage, 12 V DC recommended. Uses the Hitachi HA13001 IC and a dozen external components for a compact and powerful monaural amplifier. Builder must supply his choice of speaker (4 or 8 ohm) and some heat sink grease to apply between the IC and the heat sink. Includes PC board and all parts. Build two for stereo.

No. 80-1105 Amplifier kit.


Variable Power Supply

The kit comes "complete", which means the transformer A.C. power cord and a fuse holder are included. Most power supply kits leave finding such things to the builder. Output via screw terminals, making this a good bench supply for the kit builder. Voltage may be varied from a volt up to about 24 volts DC and is well regulated; i.e. voltage is very stable. Using the LM317T I.C. and including the Philmore TR241 (24 volt, 1 amp) transformer permits an output range from about a volt to 21 volts. Higher current is available at the higher voltages but lower voltage are at lower currents; for example, around 5 volts output maximum is around 350 mA. Maximum current is available in the 18 to 22 volt range . Ripple (on line noise) is finite, making this a good kit for those audio and R.F. projects where you do not care to hear power line noise. Note: We do not recommend a beginner build this kit unless he has some experienced supervision to help. Any kit that connects to the A.C. power line is potentially dangerous to the inexperienced builder.

NO. 80-970 Variable Power Supply


R.F. Bug Sniffer
(Hidden Transmitter Locator)

If someone put a BUG (listening device) in your meeting room, would you know it? Today’s small circuits make listening devices too easy to conceal to ignore. You may want to assemble this one for resale to nervous and needy users. A high quality circuit, should be considered even by the professional. It will detect any transmitter sending A.M. or F.M. or just C.W. at frequencies anywhere from ten to 450 MHz; peak sensitivity is in the 80 to 120 MHz portion where many bugs would be found. The signal strength is indicated on a bargraph, so the closer to the source you get, the higher the indication. With some practice, you should be able to find a covert transmitter to within a few inches of its location. "Professional" bugs, placed by serious operators can be found easily. Operation on 9 Volt battery for portability.

No. 80-990 Bug Sniffer kit

(Click on photo for lager view of the board. The Black and white photo shows the ‘bottom" board; the top board is mounted on spacers above that board and contains the LCD readout and the entry keypad for entering the frequency. The top board is shown below. )

PLL-VFO Experimenter Package (experienced builder only) 440Khz to 185mHz.! This new VFO Circuit is a two part (two board) system for the experimenter. The "Bottom Board" (photo) is the PLL and VFO, complete with an area for the experimenter to add whatever circuit he desires; such as a transmitter, receiver, transceiver etc.. The "Top Board"  (photo not here yet) is a controller with a keypad for frequency entry and an LCD digital readout that displays frequency. The Top Board controller communicates with the MC145170 chip on boards may be stacked with spacers and will mount neatly in a Philmore No. PB107 plastic case (not included). Not intended to be a complete kit, this circuit pair is intended to provide a highly flexible platform for the experimenter, student or Ham radio builder etc.. The circuits provide Rock-Solid frequency control with a very easy to use human interface (that’s fancy for push-bottom keypad and readout). Included are circuit ideas, in schematic form, including a forty-meter transmitter and a radio receiver circuit. The prototyping area is large; the user can build a simple or multi-stage AM or FM receiver, CW rig, signal generator etc. The circuit may be used with various oscillator designs from 440Khz to 185Mhz. The circuit employs an MC145170 PLL IC which provides drift-free tuning with considerable stability. Operates on 12 volts DC. You will need up to 100mA to power the kit plus don’t forget to add enough current capability to handle your own addition to the PC board.

No.80-1401 PLL Exp. kit

NOTE: This is the end of the fourteen page kits section.
Don’t miss the new kits page with the kits just introduced in 2003.

Back to Kits Index page HERE  

DATAKITS® from the Datak Manufacturing div. of LKG Industries, Inc.
copyright ©2003 LKG Industries, all rights reserved.