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Ramsey Electronics Kits Which Are Available!
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Works great on any rig
CW7C - CW Keyer Kit
YDI Price $34.95
Perfect CW in one night
Ideal for code practice too, and later performs well with your rig.
Basic features at a budget price
Add to your CW fun with our low cost CMOS Keyer Kit. You'll send clean code that’s a pleasure to copy; self completing dots and dashes with properly weighted spacing and timing are all programmed into the CW7’s design. Assembly of the keyer is fast, easy, and fun. Our step-by-step instructions lead you to a finished unit in only one evening. For beginners the CW7 makes an ideal code practice oscillator - learn the sound of perfectly formed CW right from the start and have a fine piece of ham gear too! Built-inside tone, adjustable pitch, front panel speed and volume controls, and convenient 9 volt operation are featured. The CW7 is the ideal companion to our QRP transmitters or any other rig you may own. You need to supply an external set of paddles. (Manual includes details on constructing economical paddles.) The custom case and knob set matches our QRP receivers and transmitters. If you’re looking for a deluxe memory keyer check out our CW-700 Micro Memory Keyer Kit. Powered by 9 V battery (not included.)
Check Your Own Heart!
ECG1C - Electrocardiogram Heart Monitor
YDI Price $44.95
Visible and audible display of your heart rhythm
Re-usable sensors included; just like visiting the lab at the hospital!
Bright LED “Beat” indicator for easy viewing
Monitor output for professional display on your oscilloscope
Simple and safe 9V battery operation
We have found many different uses for this little kit! Applications ranging from the traditional ECG/EKG monitor to the 'Newly-Wed' Love Synchronizer! One of the main reasons we designed the ECG1 was to answer a long running debate here at the shop. We wired up the 'Boss' and finally confirmed he does not have a heart! Use the ECG1 to astound your physician with your knowledge of ECG/EKG systems. Enjoy learning about the inner workings of the heart while at the same time covering the stage-by-stage electronic circuit theory used in the kit to monitor it. The three probe wire pick-ups allow for easy application and experimentation without the cumbersome harness normally associated with ECG monitors. The documentation with ECG1 covers everything from the circuit description of the kit to the circuit description of the heart! Multiple 'beat' indicators include a bright front panel LED that flashes with the actions of the heart, an adjustable level audio speaker output supporting mono or stereo hook-ups, and a monitor output to view the traditional style ECG/EKG waveforms you see on ER! The fully adjustable gain control on the front panel allows the user to custom tune the differential signal picked up by the probes giving you a perfect reading every time! Operates on a standard 9VDC battery, not included. This is NOT a medical device, it is intended for hobbyist usage only. If you experience any symptoms, seek medical help immediately! (Editors note: This kit is not intended for catalog editors and webmasters of Ramsey Electronics; it’s too late!)
FM10C - FM Stereo Transmitter Kit
YDI Price $44.95
Tunable anywhere in standard FM band... 88 to 108 MHz
Operates on 5 to 15 VDC
Settable pre-emphasis 50 or 75 uSec for use anywhere in the world
Easy to build, low cost transmitter, includes matching case set!
Here is a great entry-level kit that will teach the basics of FM Broadcast Transmission while finding many uses around the home or dorm room. The FM10C has plenty of power to cover your home, back yard, or city block. Our manual goes into great detail outlining all the aspects of antennas, transmitting range and the FCC rules and regulations. You’ll be amazed at the exceptional audio quality of the FM10C. Tunes through the entire 88-108MHz band in three separate ranges with a tuned LC circuit. Re-broadcast your favorite music commercial free and with the dynamic range the musician intended, without all that nasty compression the big boys use to make their station sound louder than the competition. Compression produces a noticeably muddier and less dynamic sound. The unit runs on internal 9V battery, external power from 5 to 15 VDC, or an optional 120 VAC adapter is also available. Includes the matching case & knob set for a professional finished look. Case size 5”W x 1½”H x 5¼”D
Low cost...easy to build!
FR146C, FR10C, FR220C
Your Choice YDI Price $49.95
Tunes any 5MHz portion of selected receiver band
Excellent performance, less than 1µV sensitivity
True Superhet Receiver with sharp ceramic IF filters
Front panel volume, squelch, and tuning controls
You get a lot for your money with any one of these dual-conversion FM receivers. In just one evening of building fun you can be snooping around the band monitoring the local repeater, checking-out new bands, or even eavesdropping in on the local police and businesses. There are no short cuts taken in the design of these units-sensitivity is equal to full size monitor receivers or scanners. Schools, scout troops, clubs and hobbyists use these receivers for teaching, monitoring, and just plain building enjoyment. Any one of these little receivers are ideal for easy chair listening-and with no big clunky box and wiring to aggravate the XYL! All four receivers can be tuned outside of the intended amateur bands. For example the FR-146 two meter receiver will tune any 5 MHz segment from 130 to 180 MHz. Choose your band and enjoy FM repeater and simplex monitoring on a budget! Help a newcomer discover the 220 MHz novice band. Listen-in on exciting 10 Meter international FM action. Rediscover the fascination of 6 Meter sporadic E band openings and uncrowded new FM repeaters. For a professional finished look, our matching case and knob set can’t be beat. Kit includes detailed step-by-step manual that carefully guides you to a finished working radio. Runs on 9V Battery. Case measures 5”w x 5 1/4”d x 1 1/2”h.
FM100B - Super Pro FM Stereo Radio Station Kit
YDI Price $269.00
Built-in mixer - 2 line inputs and one microphone input, line level monitor output
Precision active low-pass "brick wall" audio filter
Clean, filtered RF output suitable for RF amplification
Frequency range 88.0 to 108.0 MHz, 100 KHz steps
Our FM100B is the updated version of a truly professional frequency synthesized radio transmitter station in one durable, handsome cabinet. It is used all over the world by serious hobbyists as well as churches, drive-in theaters, and schools. No one else offers all of these features at this price! The included frequency display and audio level meters assist in easy operation. The "B" version now includes some additional functionality including a line level monitor output, improved stereo separation, spectral purity, audio clarity, and adjustable RF Output.
Sound quality is impressive, and equal to or better than most commercial stations. Low pass input filtering plus peak limiters put maximum "punch" in your audio, and prevent overmodulation distortion. Churches, drive-ins, schools and colleges find the FM100B to be the answer to their transmitting needs... you will too. The kit includes a sharp looking metal cabinet, whip antenna, and built-in 110/220 volt AC power supply. An external antenna connection allows hook-up to high performance antennas like our vertical and colinear models. We also offer a high power export version of the FM100B that's fully assembled with one watt of RF power, for miles of program coverage. Many islands and villages use it as their local radio station! The export version can only be shipped outside the USA, or within the US if accompanied by a signed statement that the unit will be exported. One watt units at full power cannot be used with the telescoping whip antenna and MUST be utilized with an external antenna to maintain proper VSWR.
Note: The end user is responsible for complying with all FCC rules & regulations within the US or any regulations of their respective governing body.
FM25B - Professional Synthesized FM Stereo Transmitter Kit
YDI Price $139.00
Synthesized 88 to 108 MHz for no frequency drift!
Professional quality for exercise clubs, realtors, drive-ins
Adjustable RF output power
The ideal campus or school radio station
No annoying hum - even better stereo separation than the original!
New design features Line In and Loop Out 1/8" Stereo jacks!
New version features F style antenna output
Need professional quality features but can't justify the cost of a commercial FM exciter? The FM25B is the answer! A cut above the rest, the FM25B features a PIC microprocessor for easy frequency programming without the need for look-up tables or complicated formulas! The transmit frequency is easily set using DIP switches, no need for tuning coils or "tweaking" to work with today's digital receivers. Frequency drift is a thing of the past with PLL control making your signal rock solid all the time - just like commercial stations. The FM25B's real claim to fame however is the use of the latest cutting edge stereo generator on the market. The audio quality is excellent with amazingly good stereo separation to keep even the pickiest audiophiles happy! Connections are as good as they get; use the provided cable to interface with the line output of any CD player, tape deck, computer or mike mixer. Just build it, plug it in, and you're on the air!
Foreign buyers will appreciate the high power output capability of the FM25B; many Caribbean folks use a single FM25B to cover the whole island! New and improved with clean and hum-free running on either 12VDC or 110VAC with the supplied transformer. Comes complete with case set, whip antenna, 120VAC power adapter, 1/8" Stereo to RCA patch cable and of course the world famous Ramsey assembly instructions. You'll be on the air before you know it! Case size 5”w x 1 1/2”h x 5 1/4”d.
FM30/FM35 - Digital FM Stereo Transmitter
FM30 YDI Price $199.00
All The Features You Asked For...PLUS A WHOLE LOT MORE!
PLL synthesized for drift free operation
Front panel digital control and display of all settings and parameters
Professional metal case for noise-free operation
EMI filtering on audio and power inputs
Super audio quality, rivals commercial broadcasts
Available in kit or factory assembled versions
THE LEGACY CONTINUES!
For nearly a decade we have been the leader in hobbyist FM radio transmitters. First we came out with our low cost FM10, the tunable FM transmitter that has set records as the most popular school, scouting, and first time hobbyist kit. Then we introduced the world famous FM25 series of FM transmitters. We took the basic concept of the tunable FM10, made it synthesized for rock solid and stable operation and gave it the features and performance that made it THE LEADER in low cost FM stereo transmitters. From there we introduced our FM100 series Super Pro FM Stereo Radio Station. We took the exceptional circuitry of the FM25 and built a stand-alone "radio station" around it, complete with microphone and line level audio mixers, digital control and display of operating frequency, higher RF power output options, and put it all in a professional case. To date, the FM100 series continue to be our #1 selling products!
NOW FOR 2005...
Introducing our new FM30 series transmitters! How could we make history better? First, we listened to thousands of our customers that loved the stability of the PLL synthesized FM25 series but wanted easy to change front panel control of the operating frequency and wanted to know what frequency they were transmitting on. They also wanted the capability of controlling the audio levels at the transmitter rather than changing the input levels. We thought those were very legitimate requests, and our response was to move up to the FM100 series. "But I don't need an audio mixer, I don't need all that fancy stuff built-in, I just need a small transmitter I can afford"! Here you go, designed from the ground up...the FM30 series!
Our RF engineers took it as a challenge and designed not one, but TWO transmitters! The FM30 is designed using through-hole technology and components and is available only as a do-it-yourself kit, with a 25mW output very similar to our FM25 series. Then they redesigned their brand-new design using surface mount technology (SMT) for a very special factory assembled and tested FM35WT version, with 1W output for our export market!
Both are designed around an RF tight vinyl clad metal enclosure for noise free and interference free operation. All settings are done without taking the cover off! Enter the setup mode from the front panel and step through the menu to make all of your adjustments. A two line LCD display shows you all the settings! In addition to the LCD display, a front panel LED indicates the PLL lock so you know you are transmitting. Besides frequency selection, front panel control and display gives you 256 steps of audio volume (left and right combined) as well as RF output power. A separate balance setting compensates for left/right differences in audio level. In addition to settings, the LCD display shows you "Quality of Signal" to help you set your levels for optimum sound quality. And of course, all settings are stored in the non-volatile memory for future use!
The design includes EMI filters on line level audio and power inputs, and a state of the art microstrip PCB inductor to reduce microphonics for the ultimate in alignment free operation. RF output is through a professional well shielded rear panel BNC connector for a perfect antenna match. Standard RCA connectors are used for left and right line level audio inputs.
Both the FM30 and FM35WT operate on a 13.8 to 16VDC and include a 15VDC plug in power supply. The stylish metal case measures 5.55"W x 6.45"D x 1.5"H and is a perfect match with your computer to broadcast your music files throughout your house. If you're looking for a super performer without all the features of our FM100 series transmitters, the new FM30 is for you! The FM35WT can only be shipped outside the USA, or within the US if accompanied by a signed statement that the unit will be exported. (Note: The end user is responsible for complying with all FCC rules & regulations within the US, or any regulations of their respective governing body).
Get In On The Action...For Under $40!
HR20C, HR30C, HR40C - 20, 30, 40 Meter QRP Receivers
Your Choice YDI Price $39.95
Sensitivity of approximately one microvolt rivals the big rigs!
Covers 500 KHz of selected band
Receives CW, SSB and AM
Plenty of audio output, drives any speaker or phones
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). Included case measures 5”w x 5 1/4”d x 1 1/2”h.
Many other Brands & Types of Kits Are Available!
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Prices current 3/26/2010. Prices are subject to change without notice.
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