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Frontline Hobby - Electronics

Solder Kit - Soldering Starter Kit Here it is! Your first kit. Use this kit to learn how to solder. A good solder connection is critical to the funtioning of any project you build. Too much solder can bridge between connections creating a short. Too little solder makes a weak connection that could break. Too little heat when making a solder joint and you may not get a connection at all. The kit comes with a soldering iron and very clear instructions on how to solder. The LED Blinker may be used with a bicycle, etc. It includes jumbo LEDs. It includes a green and red one, solder and all parts needed to complete the project.	MP3 / Walkman FM Mono Transmitter with Power Supply (Fully Assembled) (Special Deal) This mono FM transmitter can be connected to any type of audio source with a headphone or line output such as a computer, laptop, portable MP3 Player, Walkman or Discman in order to transmit the sound to any FM receiver. A stereo cable is included. The circuit can be powered with an adapter or using a car cigarette lighter adapter. A DC jack is incorporated right on the board for easy connection. Frequency: 88 - 108 MHz. Typical range: 100 feet. Supply voltage: 9 - 12V DC @ 50mA. Recommended power supply: Kit CK341V12 / UK341V12.	Ding Dong Sound Effect Generator (Door Chime) (Module) - Fully Assembled This unit uses an advanced IC which has been pre-programmed to create a realistic 'Ding Dong' sound. Once its power is connected, it will produce a 'Ding Dong' twice. It is a useful unit having many applications such as door bells, alarms, telephone ring, clocks, timers, shop entrance bell, etc. Supply voltage: 3V DC @ 50mA. Includes 2 x AA size battery holder.	2x7W 12V Walkman Stereo Amplifier Kit This kit can change your Walkman into a stereo system. Using a pair of sophisticated LM380's, it will deliver up to 14 Watts of audio power/ 7 Watts of power audio per channel. Has features like temperature compensation, and output short-circuit overload protection. In addition, the circuit has low/high impedance inputs which can be connected to any stereo audio source such as a Walkman, portable CD players, portable MP3 players, etc.
Clearance Item - Hidden Tormentor Game Kit (Limited Stock) Want to have some fun tonight? Build this kit and hide it and watch the excitement as everyone tries to find it. Itputs out a high pitched tone for a few seconds and shuts off. Just when you are about to find where the sound iscoming from, it shuts off for 10 seconds. It turns on again and everyone is running around like crazy looking forwhere the sound is coming from. Your sides will hurt from laughing so much. How else could you have so much fun for so little money? Build one and let the fun begin! Comes with complete instructions.	2 Meter Preamp Kit Put some new 'ears' on your rig with one of these hot little preamp kits. Their high gain combined with low noise will improve most any receiver. Fully protected against overload and designed for low current and stable operation. They employ high Q tuned circuits which restrict out-of-band signals that can cause intermod blanking and over load of your radio?s front-end. Don?t be misled by GaAs FET claims! The cheap dual-gate FETs (manufactured for TV tuner usage!) used by others just don?t come close to the performance of these preamps designed with NEC microwave transistor devices. Gain is typically 16 to 20 dB and noise figure is 1 dB @ 2 Meters, 1.2 dB @ 220 MHz, and 1.4 dB @ 440 MHz. Compact design or easy installation into most any rig. Operates on 12 to 15 VDC.	DC to Pulse Width Modulator This control circuit is ideal for the accurate control of DC motors lighting levels small heaters as well as other applications. The circuit converts a DC voltage into a series of pulses such that the pulse duration is directly proportional to the value of the DC voltage. The great advantage of such a circuit is that almost no power is lost in the control circuit.	AM/FM Radio Kit/Trainer This kit includes an assembly, lesson and theory of operation manual. The actual assembly is broken into simple sections. Each section should be completely tested before moving on. This reduces difficult trouble-shooting associated with many similar kits. The kit includes a practical hi-tech blue PC board with the schematic printed on the surface, a battery, and solder. The manual is easy to understand, no previous knowledge of electronics is necessary. This radio kit PC board has been designed so that no cabinet is necessary. A special bracket provides the necessary support to use the radio in any location, displaying the work achievement of the student.
Crystal Radio Radios are all around us - playing in cars, boom boxes, space shuttles, etc. - and radio waves are all around us - literally all around us, in the very air we breathe - and now you can harness the power of both, and have a great time doing it, with the Crystal Radio! It actually operates without batteries, and comes with a book that gives you the inside scoop about radios in a fun and informative way. Simple to build, simple to learn, and very entertaining, the Crystal Radio teaches important lessons about an important part of our world. Includes tuning coil, antennas, and earphone. Batteries are not required.	Clearance Item - Dual LED Blinker Kit (Limited Stock) Here's a flasher for all occasions. Use it at home in your room as a pseudo burglar alarm system; use it on yourbike at night so you can be seen; use it for eyes of your favorite monster or teddy bear; use it to attract attentionwhen you wear it to a party. Easy to build and maintain. Will run for hours. Make several. Comes with completeinstructions. Give them as gifts to your friends.	Power amp - 2 x 10W Stereo Amplifier (Fully Assembled) A stereo amplifier that will convert your Walkman, Discman or MP3 player into a stereo system with enough power to fill a large room with stereo sound. Features include temperature compensation and overload protection. Supply voltage: 12 to 18V DC @ 1 to 1.5A.	5W 12V Audio Amplifier Kit This circuit is a compact design AF amplifier based on the TBA810 Integrated Circuit. Its low consumption and compact dimensions make it ideal for all kinds of audio amplification applications. The circuit incorporates an overload protection circuit and volume control. In addition, the circuit has low/high impedance inputs which can be connected to any audio source. The supply voltage is 12 to 16V DC with 0.5A of current. The input sensitivity is 100mV/47K Ohm and output power is 7 W Max/4 Ohm. The freqency response is between 40Hz to 18KHz (-3dB). The kit has volume control and measures 1.75" x 2.25".
Clearance Item - Queuing Counter Display (Special Deal) (Limited Stock) A digital customer turn display unit that is ideal for use in busy shops or offices in need of displaying next customer's turn. Each time the hand-held switch is pressed, the display will count up to show the next turn and a 'Ding Dong' sound will be produced twice to notify the customers. The circuit includes a reset switch and an automatic count up switch. Supply voltage: 9V DC @ 300mA. Recommended power supply: Kit CK341V12 / UK341V12.	Clearance Item - Digital Voltmeter - 4 LED's (Soldering Kit) (Limited Stock) This Digital Voltmeter contains 4 LED's.	Variable Voltage Power Supply The variable voltage is capable of 3 Fully Regulated Supplies. The options are 1.5 to 15 V @ 1A, -1.5 to -15 V @ 1A and 5 V @ 3A. This model also features short-circuit protection.	3-20V/300 mA DC Regulated Power Supply Kit Here is that perfect little power supply you need on your bench to replace batteries. It is variable from 3 to 20 VDC. Using a regulator (LM7805) it delivers voltage up to 300 mA. This make a very good regulated power supply for many applications. Build one for your bench today and stop looking all over for batteries to test circuits. Easy to build comes with complete intructions and diagrams. Can be purchased assembled.
Video Transmitter Cube, Wired and Tested (Special Deal) Perfect video transmission from a transmitter you can hide under a quarter and only as thick as a stack of four pennies - check out the size compared with a penny! Transmits color or B&W with fantastic quality -almost like a direct wire connection to any TV tuned to cable channel 59. Crystal controlled for no frequency drift with performance that equals law enforcement models that cost hundreds more! Basic 20 mW model transmits up to 300?. Units run on 9 volts and hook-up easily to most any CCD camera module. Any of our camera modules have been tested to mate perfectly with the Cubes and work great with solid, trouble-free operation! Fully assembled and tested - just hook-up power and you?re on-the-air with a killer system!	Soldering Iron (25 Watts) A great soldering iron for all your electronic projects.	Old Time' Crystal Radio Kit This little project is a sure interest grabber with students of electronics of any age! Recommended for Boy Scout Merit Badge and Cub Scout Activity for requirements. It does not require a great amount of skill, but a little application will produce a good basic radio receiver. Construction is fairly simple. This radio DOES NOT require batteries to operate; rather, it uses simple electrical principles to power itself. It does not include the Double Headset shown but does include a Crystal Earphone. Tuning is done by rubbing a piece of metal (large paper clip included in kit) across the coil of wire which is wrapped around a toilet paper tube. The best antenna for this radio is simply a really long wire, mounted as high above the ground as you can make it. Though sometimes just connecting the antenna lead to a bed spring can bring surprising results, especially in city areas, or close in to a transmitter station in the country.	0 - 18V / 0 - 1A Max Regulated Power Supply (Fully Assembled) This small power supply provides a regulated DC voltage adjustable from 0 to 18V with the maximum current adjustable from 0 to 1A. It uses the popular 723 regulator Integrated Circuit in conjunction with 2 transistors to provide a well regulated DC output with current limit and overload protection. Supply voltage: 14 to 16V AC @ 1A.

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