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HOME     KIT BUILDER NOTICE:   We have more than ONE HUNDRED other kits! On this page are just the newest kits to be offered this year. See the Philmore-Datak catalog at your local distributor for the entire list.    Need to contact us?
announced in 2002        

PLL-VFO Experimenter Kit (Experienced builder only) 440Khz to 185mHz.!! !wpeA.jpg (5191 bytes)

This new VFO Circuit (kit) is a two part (two board) system for the experimenter. The "Bottom Board" 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" 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 the Bottom (PLL-VFO)board. The two boards may be stacked with spacers and will mount neatly in a Philmore no. PB107 plastic case (not included). (The "Bottom Board" is shown to the right and the "top board" is shown immediately below.)

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 (meaning:  push-button 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.

Philmore Stock Number.. 80-1401   Suggested list price $ 99.99 complete kit.

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        70 WATT MONO AMPLIFIER KIT. 12 VDC operation

A POWERFUL amplifier with excellent quality output. The amplifier was designed for 12 to 14 volt DC use so that it could be powered from a car or truck battery for use during outdoor functions such as ballgames, picnics, and even during emergencies such as forest fires. Be sure to use adequate speakers; seventy watts is a lot of power. You could parallel two Philmore trumpet speakers no. WP-20. Although rated at 30 watts each, they should be adequate unless you plan to turn the volume up all of the way and play hard rock (then, find bigger speakers).

Designed for normal, line-level inputs such as CD Players, radios, etc; but if the input will be a single microphone, you could use the 80-104 Stereo preamp and tie the two channels together (0r use just one channel) as you will need a preamplifier for small inputs such as a magnetic mike. The preamp also operates on 12 volts. DC.

Plan on using at least a 5 amp power supply if you don’t use on an auto battery; six or seven amps is better, or peaks may distort. The circuit has all the modern features, such as thermal shut down protection, output short protection etc.

Stereo PLL Transmitter Kit………. Part no. 80-052    sugg. price: $ 33.99

wpeD.jpg (6546 bytes)   PLL controlled FM Stereo Transmitter Kit
                                                            – top of the line.

the finest in Stereo transmitters, broadcast anywhere in the
standard FM Broadcast band in excellent stereo sound.

An FM Stereo Transmitter with the best features that our designers could think of. In addition to clean, accurate stereo, the PLL provides stability that is simply not available in most transmitters. AND, the Unit has an LCD display with an EEPROM memory to retain frequency setting even if powered down.

The top board is the controller, with the keypad switches and LCD readout. The bottom board is the transmitter, employing an NJM2035 for the stereo generator, buffered tuning from the PLL for quiet performance and an RF amp stage on the output. The circuit can be tuned in 5K steps, for fine tuning. wpeE.jpg (7017 bytes)

You will want to use a very "clean" power supply for this circuit; batteries (12 volts DC, at least 75 mA.) are a perfect source of power. Or, a well filtered power supply to be sure to eliminate power line hum. The circuit can broadcast any line-level input, such as a computer sound card, CD player, tape player etc. far enough to provide excellent reception around an average house and yard.

The top board size is 5 1/2" long and 3.3" in width; the finished unit fits neatly into a Philmore no. PB170 plastic case (which is not in the kit, sold separately). The unit will function on voltages as low as 9 volts and as high as 14.9 volts. While assembly is easy and straight forward, we suggest the kit only for builders with some experience in kit building.

PLL controlled Stereo FM transmitter Kit……no. 80-057 Suggested List $ 119.99


Set a quantity, up to 9,999 and count down to zero. The inputs can be a relay, switch or something more sophisticated such as an wpe23.jpg (4671 bytes)optical counter. The circuit could be used to count small parts. You could count persons entering a theatre or other building. When ‘zero’ is reached, you have options as to how the circuit will react. It can trigger a relay or simply cycle back to the preset number etc.; perhaps you want a light to come on or a hopper to stop feeding parts. A theme park may not want an event to occur until a certain number of persons has entered an area. The fastest count rate is about 30 counts per second.

A debounce circuit eliminates switch/relay input problems, that make other circuits less reliable. Operates on 9 to 12 V DC and current runs between 20mA and 40mA depending upon the displayed digits. A 150mA (small) 12 volt AC wall adapter works fine. Documentation is thorough, explains options etc.

DOWN COUNTER kit…………………………….Part no. 80-154 Sugg. List $ 25.95

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ALARM SIREN DRIVER KIT   for Horn speaker (speaker is not included)
Produces an incredibly loud (120dB) siren sound, the familiar rise and falling wail. The Zetex SZD100 siren driver is used for reliability. You can power this circuit on any voltage from 4 to 18 volts DC. Low current drain makes this an ideal circuit for battery use, automotive alarms, battery powered burglar alarms and so on. Use with Philmore WP4 or WP7 or similar horn speaker. This is a professional grade circuit; not a toy.
PLEASE NOTE: The circuit Photo was not available at press time;
Horn speaker is not included.

Alarm Siren Driver Kit…………………….Part no. 80-116 Suggested list $24.99

Dual unRegulated Power Supply kit.

This is a very simple circuit, which will provide a dual supply (often needed for power amplifiers) when the user supplies a center tapped, 110VAC transformer. The kit simply contains the diodes, electrolytics and a place (PCB) to connect the transformer and outputs. . In order to get a +/- 25 volt supply, you would need to use a 50V, center-tapped transformer.

 Power Supply Kit.  Part no. 80-114 Sugg. list price $16.99


PC Dual STEPPERMOTOR CONTROLLER. (Photo of bare board shown but all parts are included in the kit.)

The kit enables user to control two unipolar stepper motors via the parallel port. Four digital inputs are also included (these may be used for monitoring external switches, inputs etc.). The kit does not require external power; the motors, of course do require a power supply.

Included, an extended D-shell plastic case (RS-232 style) and all parts. A DOS based program written specifically to drive ‘steppers’ is included on diskette, complete with C source code.

Stepper Controller Kit…..Part no. 80-113 Sugg List: $29.99

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(Note that only the PC board is shown but all parts are in the kit.)

The circuit is a PC driven sampler that monitors voltage changes over periods ranging from milliseconds to months. It can even double as a low frequency ‘scope, to examine signals up to about 5KHz. Powered by connection to the parallel port, not external supply needed.

The kit is designed based upon an original article in Electronics Australia (Aug. ‘96) by Graham Cattley. The original article is included, full of useful information and applications. Here is a place to put that old ‘386 or ‘486 to use. Software is included; runs under DOS. The entire circuit fits in a compact plastic connector case, included. A good kit for serious hobbyists.

Pocket Sampler/logger kit…………..Part no. 80-112 Sugg list: $32.99

High Accuracy Multi-MODE TIMER

Using a programmable IC, the circuit revolutionizes timers in terms of flexibility and accuracy. A number of triggering options are available, ranging from tripping a switch or a voltage or a relay.

Output relay is capable of handling up to ten amps. Time delay is simply selected (and accurately) with on-board dip switches. May be programmed from seconds up to 42 hours. Turn something on or off; seven different timing modes available to the user . The heart of the circuit is an Atmel 89C2051 IC, already pre-programmed for you. A versatile circuit may be used to open the relay after a time period, close the relay or even toggle the relay on for a time and off for that same amount of time(toggling).

Multimode Timer Kit…………………………………..part no. 80-141 Sugg list $23.99

40 Second Message Recorder with Looping Option.

The circuit uses an Information Storage Devices Corp. no. ISD2540 chip to store one or more audio/voice messages up to forty seconds (maximum time). If desired, the first message can be looped so that it plays repeatedly. Non-volatile; the message(s) is retained even when the power is removed.

Output is to a User-supplied four or eight ohm speaker. The output is small, and you may wish to add an LM386 amplifier kit (no. 80-170) or another amp to increase the volume for your application. The same circuit could be used with any of the ISD25xx chips in the series up to 120 seconds record time. Operates on x volts at y milliamps maximum.

Message Recorder Kit……….Part no. 80-146 Sugg list: $25.39

4 Digit UP/Down Counter module kit. wpe27.jpg (4513 bytes)

The kit is a low cost counter, counting from 0000 to 9,999 or down from 9,999 to 0000. The overflow output pulses low when the count wraps to zero; so, two counters could be connected together to make an eight digit counter. The clock input is debounced to prevent problems when using external mechanical switches. Operation on anywhere from 9 to 15 volts DC and 20 to 40 mA (depends upon how many display segments are lighted). The AT90S1200 is preprogrammed; builder is not required to program anything. There are five pairs of pins for external connections: RESET, CLOCK, DOWN, DISABLE, OVERFLOW. A Down connections sets the unit to count down. A Disable prevents counting at all; Reset sets the counter at zero (0000), Overflow outputs a pulse low when the counter reaches 0000. The Clock contact will pulse a ‘count’, and each time a switch connected to Clock is ‘on’ the unit increments a digit. The maximum speed of counting is a bit more than thirty (30) per second. The display is red LED digital 0.6" high.

Counter up/down counter………part no. 80-129 sugg list: $25.99

That summarizes the new kits added in mid-year 2002. Need to see a copy of the catalog with all kits? Send us a note and request the latest Kit Brochure.

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