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MPX2000
DIGITAL PLL FM STEREO TRANSMITTER |
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| ATV12MK2
2WATT 12 VOLT 440 MHz TV TRANSMITTER |
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MPX96
PLL FM STEREO TRANSMITTER PC BOARD |
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AM88
LP PLL AM TRANSMITTER |
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Since
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| A
quality supplier of RF and Video Transmitters and Receivers, Electronic
kits, Video Devices, Light Controllers, Books and CDROMs, And Specialty
& Related items for the Electronics Experimenter , Hobbyist, and
Craftsperson |
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for Main Index |
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Click
here For Ordering
Informationation |
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ALL
ONLINE ORDERS ARE HANDLED BY A SECURE SERVER |
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ELF "EARTH" RECEIVER NATURAL RADIO  |
VIDEO
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UNIQUE LIGHTING LIGHT
CHASERS & SEQUENCERS
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SHORT
WAVE AND RECEIVER ACCESSORIES
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RF AND ELF FIELD STRENGTH METERS  |
 FLICKER AND SPECIAL EFFECTS LIGHTING CONTROLLERS |
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NORTH COUNTRY RADIO, PO BOX 200, Hartford NY 12838-0200
Tel
518 854 9280 |
Internet
http://www.northcountryradio.com |
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SITE UPDATED 11 June 2008
PRODUCT FINDER
CLICK ON LINK TO LOCATE PRODUCT IN MAIN INDEX
CERTAIN ITEMS AVAILABLE ASSEMBLED AND TESTED
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ATV DOWNCONVERTER KITS |
| AM TRANSMITTER KITS |
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| FM STEREO TRANSMITTER KITS
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| VIDEO DEVICE KITS
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SWL AND RECEIVER KITS |
| SPECIAL EFFECT LIGHTING |
PROJECT KITS |
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ACCESSORIES FOR KITS |
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| MAIN INDEX ALL ONLINE ORDERS ARE HANDLED BY A SECURE SERVER |
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U.S. DOLLARS |
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| 2 Watt PEP Basic ATV, R/C, LPTV Transmitter For Ham TV, Radio Control applications, and export LPTV use. Has adjustable level 4.5 to 6.0 MHz audio subcarrier and will support NTSC or PAL operation. Comes with one xtal for 439.25 MHz, can be upgraded to 3 channel coverage. |
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Kit Available assembled and tested |
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Upgrade kit to convert ATV12 MK2 to 3 Channel ATV Transmitter Consists of xtals for 434.00 and 427.25 MHz, and necessary jumpers and headers. |
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| 0.5 to 1W PEP RF output miniature ATV Transmitter . Designed for radio control applications in which size is a consideration. Size is 1.75 X 2.75 inches (43 x 70 mm) and weighs 28 grams. Has audio support. Operates on 9.6 to 14.4 volt supplies. Xtal for 439.25 MHz operation included. |
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Available assembled and tested |
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| 0.5W Video Transmitter no audio (New Design). This transmitter is small enough for remote control applications in R/C models where no audio capability is necessary, and for nature study and surveillance. Size is 1.75 X 2.75 inches (43 x 70 mm) and weighs 28 grams. Operates on 9.6 or 12 volt supplies, includes xtal for 439.25 MHz operation. |
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| 1.5 W 3 Channel 902-928 MHz ATV Transmitter. This unit is based on the ATV12-440 but designed for use in the 902-928 MHz range, which includes the 33 cm. Amateur band. Operates from 11-14.4V supply Supports NTSC or PAL operation. Comes with xtals for 910.25 and 922.25 MHz. |
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Available assembled and tested |
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| Low Power Tuneable VHF TV Transmitter. Covers VHF CH 2 to 6 for hobby and home experimental use. Battery powered. Covers an average home. |
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| Miniature 0.5 W 900 MHz ATV Transmitter with audio capability. Same physical size and weight as the ATV-MINI-440 but designed for 902-928 MHz operation. Includes crystal for 910.25 MHz. |
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| 1 Watt 3 Channel 1240-1300 MHz ATV Transmitter. Higher frequency version of the ATV12-915 Transmitter. AM modulation, NTSC or PAL is supported. Comes with crystals for 1289.25 and 1277.25 MHz, with space for one additional crystal. |
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Available assembled and tested |
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| A great transmitter book "Build Your Own Low Power Transmitters" by R.Graf and W.Sheets. 291 pages describing in detail many of the transmitters offered as kits on this website, plus others. 23 chapters of good information on theory, circuitry, tuneup, applications. This book describes real transmitters with useful RF power levels and performance, not a rehash of the tired old cliches seen elsewhere. PC board diagrams, parts lists and schematics included as well as complete explanation of circuit operation. ISBN 0 -7506 -7244 -7 . A great addition to any experimenters library. |
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CHECK WITH YOUR LOCAL BOOK STORE |
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Accessories |
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| 440 MHz High Dynamic Range tuneable downconverter for reception of 420-450 MHz ATV frequencies. Has schottky diode balanced mixer assembly and MESFET RF stage for high dynamic range, useful in crowded RF environments. Converts ATV frequencies to VHF CH3 or CH4 (60-72 MHz) for reception using a standard TV receiver. |
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440 MHz ATV Downconverter |
440 MHz ATV tuneable downconverter for reception of 420-450 MHz ATV frequencies. Converts ATV frequencies to VHF CH3 or CH4 (60-72 MHz) for reception using a standard TV receiver. Can be remote tuned via DC feed using 75 ohm IF coaxial cable. |
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900 MHz ATV Downconverter |
902-928 MHz tuneable downconverter, for reception of 902-928 MHz ATV frequencies. Converts ATV frequencies to VHF CH3 or CH4 (60-72 MHz) for reception using a standard TV receiver. Can be remote tuned via DC feed using 75 ohm IF coaxial cable. |
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| 1300 MHz ATV Downconverter |
1240-1300 MHz tuneable downconverter, for reception of 1240-1300 MHz ATV frequencies. Converts ATV frequencies to VHF CH3 or CH4 (60-72 MHz) for reception using a standard TV receiver. Can be remote tuned via DC feed using 75 ohm IF coaxial cable. |
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LP AM BC Transmitter 150-1710 kHz PLL Synthesized 100 mw output into 50 ohm load. This transmitter covers all long and medium wave AM frequencies, in 1 kHz increments. It is crystal controlled and has built in AM modulator and dynamic modulation limiting. In addition it can generate up to 1 watt output below 500 kHz for carrier current broadcasting in both AM and FM modes. Use for general AM hobby part 15 broadcasting, talking sign applications, antique radio applications, or anywhere a low power AM broadcast transmitter is needed. Also usable for Part 15 LOWFER use in the 160-190 kHz band. Operates from a 12-15 V DC supply, negative ground. |
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| Carrier Current Transmitter for Audio AM and FM. This kit is for use in carrier current systems and remote surveillance using the power lines for carrying the RF signals which are in the 200 to 350 kHz range. Use with our carrier current AM and FM mode receivers. Up to 5 watts RF output. A 24 volt to 30 volt DC supply is required. |
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| PLL Stereo FM LP Xmtr |
PLL FM synthesized Stereo Transmitter. This basic transmitter is useful for Part 15 hobby broadcasting, experiments, talking signs, private music channels in schools, drive-ins, health clubs, etc. Crystal controlled MPX and RF oscillators assure stable drift free operation. channel frequency is set with DIPswitches in 100 kHz increments between 76 and 108 MHz, covering North American, European, and Asian FM frequencies. Compatible with both analog and digital receivers. |
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| Microprocessor Controlled PLL Stereo FM LP Xmtr |
Microprocessor controlled PLL FM Stereo Xmitter includes Digital Readouts. Carrier and multiplex frequencies crystal controlled. Keyboard entry of frequency allows easy programming and rapid frequency change. Bright LED frequency readout, and front panel LED bar graph style deviation meter displays modulation level. Includes auxiliary LED overdeviation and frequency lock LEDs on front panel. Covers 88.1 to 107.9 MHz in 100 kHz steps. Extended RF frequency coverage and/or 50 kHz channel spacing is available as an option for export use. RF output is also adjustable for export operation. Built-in voltage regulators for stable and hum-free operation. Operates from 15 to 20 V AC or DC wall transformer.
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Accessories |
U.S.Dollars |
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| Video Palette for real time special video effects. Generates simple analog video effects without requiring a host computer. Effects include fades to black or white, inversion of video (negative image), posterization ("cartoon effect"), pseudo-solarization (partial tone reversal similar to Sabbatier photo effect ). Simulates several photographic darkroom special effects on live video. Can be used on PAL or NTSC systems. Input and output is standard 1 volt p-p 75 ohm baseband video. Operates from 6 to 12V AC wall transformer. |
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| Private Home Cable TV System. This system allows one to place various video devices normally supplying CH 3 or CH4 video signals on other channels in the USA UHF TV band to allow simultaneous operation of VCRs, DVD players, satellite receivers, games, security cameras, and other video sources all on one cable system. By assigning a blank UHF channel to each device, the output of the system is like a private CATV system. Watch desired program by selecting with a TV receivers UHF tuner. Several sets can operate simultaneously on the same cable, tuned to different video sources. |
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Splitter 5.50 |
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| AM NTSC Video IF System 44 MHz in, Baseband Video and Audio out. Uses LSI IC for all functions, can supply AGC output for RF tuner. Operates from 12-14V DC supply. |
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| Video IF System CH3-4 in, Baseband Video and Audio out. For NTSC only. Uses LSI IC for all functions, can supply AGC output for RF tuner. Operates from 12-14V DC supply. |
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| FM Video IF System 70 MHz in, Baseband Video and Audio out. Useful for FM Television as used by microwave video links and 23cm, 13 cm, or other microwave ATV operation. Operates from 12-14V DC supply. |
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| CATALOG
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ACCESSORIES |
U.S. DOLLARS |
| Extremely Low Frequency Receiver |
Extremely Low Frequency Receiver ("Earth Receiver") for listening to atmospheric radio phenomena such as Sferics, Whistlers, Tweeks, Dawn Chorus, and Lightning effects. Receives the 500 Hz to 12 kHz ELF (Extremely Low Frequency) range. Works with any portable stereo headphones, or a speaker. An interesting science or experimental project. Kit includes case and hardware. Uses a 0.3 to 1 meter (12 to 30 inch) whip antenna, scanner or HT antenna, or use our NC1490 whip Antenna (sold separately) |
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| Low Noise Active Antenna for 10 kHz to 30 MHz AM/SW application Enables good reception of frequencies in the VLF, LF, MF and HF 10 to 30,000 kHz range. Useful where large outdoor antennas are not feasible or prohibited.. Has performance approximating a 25 to 50 ft. long wire antenna, but uses a vertical whip antenna 0.5 to 1 meter long. Often gives AM and Low Frequency reception superior to a 100 ft (30 meter) long wire antenna. Mounts in conventional PVC plastic pipe and is completely weatherproof. Has built in Isolation choke balun for lowest noise pickup. DC power fed via coaxial cable (50-75 ohm usable) for simple outdoor installation. Includes power supply transformer (120 V only) and parts for DC block assembly. |
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Export version 59.50 (no power transformer included) |
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| Carrier Current Receiver for AM systems. Use as a receiver for AM carrier current broadcasts, in conjunction with our AM88 or CCTR carrier current transmitters. Operates from 12-14V DC supply. |
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| Carrier Current Receiver for FM systems. Use as a receiver for FM carrier current broadcasts, in conjunction with our AM88 or CCTR carrier current transmitters. Operates from 12-14V DC supply. |
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Long Wave Converter for SW Receivers |
Long Wave Receiving Converter for 10 - 535 KHz reception. Enables reception on an HF receiver tuning the 4 MHz range. Xtal controlled, with high impedance active antenna input. Works with short vertical whip antenna 0.5 to 3 meters. Has DC power fed from coaxial cable via included DC Block assembly. Small size, die cast case included. Can be externally mounted for lowest noise pickup. |
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| CATALOG# |
BRIEF
DESCRIPTION |
DEMONSTRATION |
PRICE
U.S. DOLLARS |
| Flame Effect / Twinkle Controller makes any incandescent bulb or string of bulbs flicker and twinkle to simulate gaslight, candle or fire light. Also works with LEDs. Will work with 50-60 Hz AC voltages from 12 to 120, up to 2.5 amperes (300 watt load) with low or line voltage lamps. Capacity up to 10 amperes with external heatsink Completely electronic, truly random, with variable flicker rate. Employs a microcontroller that can be powered from lamp supply or separate power source. Incandescent or LED only. Small size (1.25 x 2.5 x 0.75 inches) allows mounting in most existing situations. |
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Assembled and Tested 32.95 Available in kit form |
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| Flame Effect / Twinkle Controller as above, but for DC voltages from 6V to 48V, up to 1 ampere per channel. For use with low voltage incandescent lamps or LEDs in battery and other DC applications. Completely electronic, truly random, with variable rate. Uses efficient switching circuitry for no wasted battery power. Employs a microcontroller that can be powered from DC lamp supply or separate power source. Incandescent or LED only. Small size (1.4 x 0.6 x 0.75 inches) allows mounting in most items. |
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Assembled and Tested 25.75
15.75 |
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| Flame Effect / Twinkle Controllers for one, three or six 120 Volt incandescent lamps makes 1, 3, or up to 6 incandescent bulbs or groups of bulbs flicker and twinkle independently of each other with different patterns, to simulate oil or gaslight, candle, and fire light. Will work with 100-130 Volt 50-60 Hz AC , up to 1 ampere (100 watt load per channel, 360 or 600 watts total at 120 volts) . Can be mounted in base of many existing light candelabras or decorative holiday lamps. Can be used in fireplaces to simulate a fire, using colored lamps concealed behind logs. May be used optionally with optional standard 3 way lamp switch to achieve 4 way function.. steady dim, medium, bright, and flickering. Completely electronic, uses a microcontroller chip to generate a truly random variable flicker rate. For incandescent lamps or LEDs only. Small size allows easy mounting in other equipment. |
3 CH For use with up to 3 bulbs (3 shown) |
Assembled and tested 29.95 (1 CH) 39.95 (3 CH) 54.95 (6 CH) These controllers available in kit form 19.95 (1 CH) 39.95 (6 CH) |
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6 CH For use with up to 6 bulbs (5 shown) |
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Flame Effect / Twinkle Controller as above , but for DC operation from 6v to 48V supplies. Makes up to 3 incandescent or LED bulbs or groups of bulbs flicker and twinkle independently of each other with different patterns, to simulate oil or gaslight, candle, and fire light. Will handle up to 1 ampere per channel. Can be mounted in base of many existing items Can be used in battery operated lanterns, novelties and also for automotive applications. May be used optionally with optional standard 3 way lamp switch to achieve 4 way function.. steady dim, medium, bright, and flickering. Uses switching circuitry for no wasted battery power. Completely electronic, uses a microcontroller chip to generate a truly random variable flicker rate. For incandescent lamps or LEDs only. Small size (1.6 x 1.0 x 0.75 inches) allows easy mounting in other equipment. |
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Assembled and Tested 29.95 19.95 |
| Variable Intensity Flame Effect / Twinkle Controller for DC operation from 6v to 42V supplies. Makes up to 8 incandescent or LED bulbs or groups of bulbs flicker independently of each other with different patterns, to simulate oil or gaslight, candle, and fire light. Will handle up to 6 amperes per channel. Can be used in battery operated signs, fair and parade displays, outdoor garden and pond lighting effects, novelties and also for various automotive applications such as emergency signalling and interior mood lighting. The flickering intensity is variable in 8 steps to obtain desired intensity of to suit lamps or LEDs Uses switching circuitry for no wasted battery power. Completely electronic, uses a microcontroller chip to generate a truly random variable flicker rate. For incandescent lamps or LEDs only. Small size (5.75 x 3.5 x 1.5 inches) allows easy mounting in other equipment. |
8 CH For use with up to 8 bulbs (5 shown) |
Available assembled and tested $154.95 Kit $104.50 |
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| Sound Activated Lamp Controller flashes any incandescent or LED lamp load 12V to 120V up to 2.5 amperes (300 Watts at 120V). Capacity up to 10 amperes with external heatsink Completely electronic, with variable audio sensitivity. Non-latching, follows audio peaks. Use for special effects, security, etc. Can be powered from lamp supply or separate power source. Incandescent or LED only. Small size (1.25 x 2.75 x 0.75 inches) allows mounting in other equipment. |
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Assembled and Tested 49.95 Available in kit form 32.95 |
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BRIEF
DESCRIPTION |
TYPICAL ACTIONS |
PRICE
U.S. DOLLARS |
| 8 Channel Animated Light controller and chaser system allows up to eight lamp loads to be sequenced in 32 selectable patterns or random flicker. Capacity 6 Amps 720W incandescent load any channel, 2400 W at 120V AC, 4800 Watts @ 208-240V 3 wire total load. (20A supply circuit) Can be used with 12V low voltage outdoor lighting. This microprocessor controlled system can be used for signs, displays, holiday lighting, special effects, etc. Great for Christmas lighting effects using multiple light strings. Uses ordinary incandescent lamps 12 to 240V 50-60 Hz AC only. Also works with LEDs and LED displays. Electronics portion is electrically isolated from 120 or 240 V lighting system supply for safety. |
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Assembled and tested: 154.50 Kit: |
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| NOTE BOTH AC AND DC CONTROLLERS WILL PRODUCE THE SAME PATTERNS THESE ARE EXAMPLES |
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RANDOM EFFECT
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| ANIMATED DC LIGHT CONTROLLER AND CHASER FOR 6 - 42V DC AUTOMOTIVE AND OTHER LOW VOLTAGE APPLICATIONS
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8 Channel Animated Light controller and chaser system allows up to eight lamp or other loads to be sequenced in 32 selectable patterns or random flicker. DC version of our AC controller, & produces same patterns and effects. Capacity up to 6 Amps DC resistive load per channel. Can be used with 6, 12, 24, 32, 36 or 42 volt low voltage DC supplies, such as in automotive & marine applications, special effects lighting, battery operated displays, portable signs, theatrical uses, fairs, etc. wherever battery operation is needed.. Microprocessor controlled. Also works with LEDs and LED displays. |
Assembled and tested: 154.50 Kit: 103.50 |
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Accessories |
U.S.Dollars |
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E-H Field Meter |
E-H Meter for measuring Low Frequency (LF,VLF,ELF) E and H Fields. Has a bar graph display and 3 built in sensing coils. Battery operated, Detects both electric and magnetic fields from appliances, flourescent lighting, power lines, TV and computer monitors. Will detect magnetic fields from devices that are hidden by walls and panels. Reading is relative, but can be calibrated. Input for optional external pickup loop for increased sensitivity. |
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RF Field Strength Meter |
RF Field Strength Meter / Bug Detector 100 kHz-3000 MHz. Has an active antenna circuit for increased sensitivity on AM broadcast frequencies and lower. Detects hidden transmitters and bug devices. Useful for transmitter and antenna checking, and locating sources of RF radiation. Has 20 segment Bar Graph LED meter, battery operated. |
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Infrared AudioTransmitter & Receiver System
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Infrared Transmitter and receiver for audio - Mono. Consists of a transmitter that generates an FM carrier and places this on an infrared light beam, and a receiver that detects this light beam, recovers the modulation, and amplifies it to drive a small spealer or headphone. Up to 1 watt audio output. Useful for private audio listening, infrared communication, remote sensing, security applications. Signal is undetectable visually or with a surveillance receiver. Both units operate from 9 to 12 volt DC supplies. |
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Infrared AudioTransmitter & Receiver System 2 channel |
Same as mono unit except includes separate Infrared Transmitter and receiver for two audio channels. Can be used for Stereo audio or simultaneous transmission of 2 audio channels for separate purposes, dual language applications, etc. |
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2 Minute Voice Messenger/Identifier and controller |
Voice Messenger and Identifier for PA use, or for use with a radio transmitter. Records and plays back up to a 2 minute voice message. Can operate as a one-shot, or continuous loop message. Adjustable delay between messages. A control and keying circuit activates another device such as a radio transmitter or other device during message playback. Useful for talking sign applications, public address repetitive messaging, and in Ham Radio operation to make repetitive hands-off CQ calls during contests or in weak signal VHF work, etc. |
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Electrometer amplifier system for meters |
Ultrasensitive Meter 0-30 V AC-DC 100000 Meg input. This kit uses any surplus 0-1 ma meter movement to make high impedance DC measurements. Useful for science and electrostatic experiments, static charge detection, insulation testing, etc. |
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Novel LED thermometer |
A novel thermometer using ten LEDs driven by a bar graph meter circuit, useful for temperature sensing. Has solid state temperature sensor. LED indicates temperature in 10 steps. An interesting science experiment demonstrating temperature sensors and bar graph displays. Can be calibrated over any desired temperature range between 0 and 50 deg C Outputs can be used to trigger alarms, fans, etc. |
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Security Wand |
Hand Held metal detector wand similar to those used in security inspections. Locates hidden metallic objects in subjects clothing. Battery operated, audio tone indicator. |
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CATALOG
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BRIEF
DESCRIPTION |
AVAILABLE LETTER CODE |
PRICE US DOLLARS |
| Video Modulator |
Video-audio modulator assembly. Takes standard video and audio line inputs, generates a signal on VHF Ch 3 or 4. Operates on 9 to 12V supply. For NTSC system use only. |
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| Extra crystals for kits. For operation of ATV transmitters and other devices on other frequencies than supplied with the kit. |
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| Flexible Rubber Duckie Whip Antennas for general use in the UHF spectrum. Has BNC connector used by many scanners, HTs, receivers, and low power transmitter devices. |
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| Collapsible Universal Whip Antenna with attached BNC connector. 0.5 meter fully extended. For general purpose and experimental use. |
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| 12V 0.5A Regulated DC Supply. This supply has been tested for use with many of our kits. Has regulated DC output, preventing excessive voltage output from damaging circuitry. Recommended for general purpose use where a 12V DC supply is required with good regulation and low ripple. |
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| Wall Transformer for kits requiring 12-14V AC. at up to 200 mA. Works only on kits designed for operation with AC voltage input. |
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Wall transformer designed for use with our MPX2000 FM Stereo Transmitter kit. Supplies 16V AC@ 1100 ma, 60 Hz. Also can be used for kits that work with an AC voltage input. |
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Cases and Enclosures |
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Hardware for kits |
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TECHNICAL SECTION
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NORTH COUNTRY RADIO, PO BOX 200, Hartford NY 12838-0200
Tel 518-854-9280
EMAIL: support@northcountryradio.com
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Internet: http://www.northcountryradio.com
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