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Frontline Hobby - Electronics

QRP - 20 Meter Receiver Kit with case These little rigs are burning up the airwaves as young and old alike are rediscovering the fun in building their own equipment! Our detailed, step-by-step instruction manuals make building an enjoyable and rewarding experience. You're guided carefully to the completion of a unit that not only works, but will provide hours of operating pleasure. These trusty and proven Ramsey all mode mini rigs are routinely used worldwide by hams of all ages. You'll find you don't need high power - K71RK worked and QSL'd all states, plus global DX QSOs from Argentina to the former USSR with only 2 mW! You don't need hundreds of watts, thousands of dollars or massive equipment, you'll find it's more fun with less! These little receivers are based upon the hot Signetics NE-602 that we read about almost every month in all of the ham magazines and handbooks. The receivers are true superheterodyne direct conversion - a simple design that does not require the use of fancy IFs, RF filters, or exotic mixers, in short, the ideal design for easy hobby building. Only recently have high performance ICs become available that enable such circuitry to be constructed. Beginners can easily build these receivers. And, experienced amateurs and QRP enthusiasts can use them as a reliable, economical, basic foundation for modifications. Our single PC board has plenty of room for lots of modifications and hook-ups, tinker to your hearts content. Suggestions and technical info are included in every receiver manual. Isn't this what ham radio is all about? Operates on 9 V battery (not included).	Clearance Item - Audio Signal Tracer Kit (Limited Stock) This fantastic little audio amplifier can be used an an Audio Signal Tracer for repairing receivers and amplifiers. Find the problem fast and keep all your audio circuits working! Easy to build and comes complete with diagrams and instructions.	Plasma Generator Kit Have you ever wanted to play with a controlled substance? Now you can! It is called plasma, and it is easily generated by this nifty high voltage kit. This is the same, though more powerful, supply that is used in Plasma Balls and neon art, and can be used for all sorts of high voltage experiments! Turn a standard light bulb into a plasma sphere!	Adjustable Timer With Relays Output Use this timer for intermittent operation of circuits and equipment. Blinking light, video/photo single frame shooting, slide projector control, miniature models.
Clearance Item - Clap On / Clap Off Relay Switch (Fully Assembled) (Special Deal) (Limited Stock) This circuit will activate the relay when its sensitive microphone receives a sound such as for example a handclap. The relay will stay activated until the microphone receives another sound. The sensitivity of the microphone is adjustable. Relay: 3A @ 110V AC. Supply voltage: 12V DC @ 100mA.	Clearance Item - Digital Dice - Pocket Dice Kit (Limited Stock) Here is a High Tech electronic way to roll dice for Monopoly, Backgammon and any other board game you are playing. Plenty of doubles here! Very random output and fun to use at home or in the car. Hours of fun and it fits in your pocket. Make them for your friends. Movie stars have them in their limos, why shouldn't you?	Fiber Optics Technology Trainer Kit Learn to communicate at the speed of light. Fiber Optic gives you the edge on the communications systems of the future. Learn the basics of fiber optics data communications while you build this exciting kit. Comes complete with all of the necessary components, including PC board and fiber optics cable, also separate transmitter and receiver.	500 in 1 Snap Circuits Electronics Project Lab Electronic Snap Circuits PRO SC-500 has over 75 parts to build over 500 exciting projects: digital voice recorder, relay buzzer, photo relay, digital-tuned FM radio, AM radio, flashing 7 segment display, screaming fan, whistle switch and more! All parts are mounted on plastic modules and snap together easily. No tools required. Ages 8 & up. Requires 2 "AA" batteries, not included.
3-Channel IC Color Organ Kit This is an excellent item for parties, dances, etc. The circuit is based on an Integrated Circuit which provides three sharp active filters for each channel. Three independent controls vary the amount of light for low, midrange and high frequencies. In addition, a built-in microphone is incorporated which allows the circuit to capture the ambient sound and to operate without requiring a connection to your stereo system. The circuit can handle up to 200W of lights per channel at 110V AC (or 400W at 220V AC).	Install a Car Alarm - Discount Car Alarm Kit This reliable car alarm, which is easy to install, can protect your car and its contents against robbery. The alarm detects snap voltage drops of the battery, caused e.g. by the courtesy light or luggage boot light being switched on.	Clearance Item - Burglar Alarm With Reset Switch Kit (Limited Stock) This kit is perfect to protect your automobile, home or business. It will monitor normally-closed switches and normally-open switches at the same time. It is small and can be easily hidden. It will sound its own buzzer or the horn on your car. It can be connected to any large siren, etc. Comes complete with instructions.	Power Blaster Color Organ Kit Make Mood Magic With this deluxe color organ you get 5 controls, one master control and 1 for each of the 4 channels (High/Mid.High/Mid.Low/Low). Power it up and dazzle your friends with Psychodelic dancing blasting Lights. Be the hit of all the parties with your colored Musical Light Show. Mood is Everything! Quiet it down with the 5 adjustable controls for a gentle glimmering romantic mood maker. The light intensity, for each string, is controlled by the frequency and the loudness of the sound for each channel. You can connect this up to the finest stereos with total confidence that the lights will be in total control by the music. This can be used professionally as well as at home for great dance parties. This will be the best color organ you have ever built! It was designed by our color organ 'guru'. Build one today and it will last for years... Easy to build and maintain. Comes with complete instructions. Note: For the mic input use a crystal mic not a dynamic mic. A color organ is a device that makes a 'light show' from music. The channels are not strictly divided by frequency, there is a lot of cross-over to make it more interesting. David McDonald, the color organ guru that has designed all of our color organs, has tried thousands of designs and this is the best. A color organ is to be connected to an audio music source with lots of frequencies and then you adjust all the controls to give you the most interesting display of lights, depending on the type of music you are playing. Build one today and enjoy music in a whole new way!
MP3 Hi-Fi Stereo FM Transmitter (Fully Assembled) Transmit MP3s or Internet radio stations from your computer or laptop to anywhere in the house with this stereo FM transmitter. The circuit can also be connected to any other type of audio source with a headphone or line output such as for example a portable MP3 player, Walkman or Discman. Another great application is to connect the circuit to your portable MP3 Player and listen to the music while in the car using your car's FM radio. The transmitter includes everything you need, including a stereo cable with plug and two stereo audio jacks for connection to your computer and to your existing speakers. The circuit can be powered with any standard 9V DC / 50mA adapter. Frequenecy: 88 - 100 MHz. Typical range: 100 feet.	0-30V/0-1.5A DC Regulated Power Supply Kit This is a very stable and regulated power supply for all your needs with a maximum output current adjustable from 2 ma to 1.5 Amps. Heat sink is included. Comes complete instructions, and etched silk-screened circuit board. Can be ordered assembled.	Clearance Item - Digital Thermometer (Fully Assembled) (Limited Stock) This LED digital thermometer uses an LM35 National Semiconductor IC as its temperature sensor. It shows the temperature with an accuracy of 0.5 ?C on its digital display. The thermometer will measure from 0 to 99 C. Supply voltage: 5V DC @ 150mA (regulated). Recommended power supply: Kit CK341V5 / UK341V5.	RF Linear Power Booster Amplifier Kit with case Been looking for a quick and simple boost for signal generators, transmitters or other low power devices? Use this kit to add serious muscle to your signal. Broadband signal boost from 100 KHz to 1 GHz with up to 1 watt of power Up to 7000 times boost at 10 MHz. It is easy to build in a couple of hours, and uses new MMIC technology. It is great for general purpose test bench or ham applications. The R-LPA-1 is the ticket for boosting power up to 1 watt over a frequency range of 100 KHz to over 1000 MHz! Although intended for use as a lab amplifier, many users in foreign countries use the LPA-1 to boost their Ramsey FM stereo transmitters to a watt of power, capable of providing radio service through an entire town. Our clearly written instruction manual and top quality, plated PC board makes assembling this powerful amplifier quick, easy and fun. Power required is 12 to 15 volts DC at 250mA via 2.1mm male power jack. Gain of 38dB at 10 MHz, 10 dB at 1000 MHz. For a neat, professionally finished look, add the optional matching case set. Optional case size 5"w x 1 1/2"h x 5 1/4"d.
Clearance Item - Power amp - 2 x 35W (RMS) Hybrid Stereo Power Amplifier with Power Supply (Fully Assembled) (Special Deal) (Limited Stock) A complete high power, high quality, low noise stereo audio power amplifier based around the Hybrid IC STK4413. The circuit incorporates PC board mounted volume and balance controls and has a maximum music output power of 55W per channel. The circuit incorporates an on-board power supply as well as a large heat sink. Supply voltage: 30 - 42V AC @ 3A.	VU Meter - 2x10 LED Stereo VU Meter Kit This unit allows you to instantly visualize signal levels from a whole range of different audio sources. For use with mixing panels, amplifiers, CD players, radio's, etc. A special input is provided, which allows direct connection to a speaker output. You can select DOT or BAR mode, to suit your application. The kit comes with an attractive display window, which can be used both horizontal and vertical. If nescessary, the unit can be calibrated by means of a trim potentiometer.	Super Sensitive 2 x 8-LED Mono Audio Level Indicator (Fully Assembled) (Special Deal) This super sensitive LED VU-Meter incorporates its own pre-amplifier and therefore it can be connected directly to the line-out of any audio source. It uses 2 rows of 8 LEDs which creates a fantastic light display. Supply voltage: 9 � 12V DC @ 200mA. Recommended power supply: Kit CK341V12 / UK341V12.	Clearance Item - Digital LED Voltmeter (Fully Assembled) (Limited Stock) This digital voltmeter is ideal to use for measuring the output voltage of your DC power supply. It includes a 3-digit LED readout with a negative voltage indicator. It measures DC voltages from 0 to 99.9V with a resolution of 0.1V. Supply voltage: 9V DC / 150mA.

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