Synthesized FM Stereo Transmitter
✔ PLL synthesized for drift free operation
✔ Front panel digital control and display of all set
tings and parameters!
✔ Professional metal case for noise-free operation
✔ EMI filtering on audio and power inputs
✔ Super audio quality, rivals commercial broacasts
✔ Available in domestic kit or factory assembled
For nearly a decade we’ve been the leader in hobbyist FM radio transmitters. We told our
engineers we wanted a new technology transmitter that would provide FM100 series quality without the
advanced mixer features. They 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 25m W output very similar to our FM25 series. Then the engineers 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 only market!
All settings can be changed 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 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
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 brought out to 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 FM30B and FM35BWT operate on
13. 8 to 16VDC and include a 15VDC plug in power supply.
(Note: After assembly of this do-it-yourself hobby kit, the user is responsible for complying with all FCC rules & regulations within the US, or any regulations of their respective governing body. FM35BWT is for export use and can only be
shipped to locations outside the continental US or valid APO/FPO addresses or valid customs brokers for end delivery
outside the continental US.)
FM30B Digital FM Stereo Transmitter Kit, 0-25m W, Black
FM35BWT Digital FM Stereo Transmitter, Assembled, 0-1W, Black (Export ONLY)
Ultimate 555 Timers
This new series builds on
the classic UT5 kit,
but takes it to a
whole new level!
You can configure
it on the fly with easy-to-use jumper settings, drive
relays, and directly interface all timer functions with
onboard controls or external signals.
All connections are easily made though terminal
blocks. Plus, we've replaced the ceramic capacitor of
other timer kits with a Mylar capacitor which keeps
your timings stable over a much wider range of voltages! Available in through hole or surface mount versions! Visit www.ramseykits.com for version details.
UT5A Through Hole 555 Timer/Osc Kit $24.95
UT5AS SMT 555 Timer/Osc Kit $26.95
USB PIC Programmer
Finally, a compact USB PIC
Programmer with a 20 pin ZIF
socket for easy programming of most
Microchip PIC Flash devices that does not
require low voltage programming. Plus it uses USB
therefore no more RS232 compatibility blues!
CK1301 USB PIC Programmer Kit $34.95
Doppler Direction Finder
Track down jammers and hidden
transmitters with ease! 22. 5 degree
bearing indicator with adjustable
damping, phase inversion, scan and
more. Includes 5 piece antenna kit.
Runs on 12VDC vehicle or battery power.
DDF1 Doppler Direction Finder Kit
Retro Nixie Tube Clock
Genuine Nixie tubes popular in
the 50’s brought back in one of
the neatest digital clocks around
today! Hand made teak maple base, 12/24 hour for-
mat, soft fade-out, auto-dim, and a crystal time base at
20ppm! Tube kits also available.
IN14TM Teak Maple Nixie Clock Kit
Electrocardiogram ECG Heart Monitor
Use the ECG1C 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 documentation with
the ECG1C 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 along with an adjustable level audio speaker output that supports both
mono and stereo hook-ups. In addition, a monitor output is provided to connect to any standard oscilloscope to
view the traditional style ECG/EKG waveforms just like you see on ER... or in the ER! 10 hospital grade re-usable
probe patches are included together with the matching custom case set shown. Safe 9V battery operation.
ECG1C Electrocardiogram Heart Monitor Kit With Case & Patches $44.95
ECG1WT Electrocardiogram Heart Monitor, Factory Assembled & Tested $89.95
ECGP10 Electrocardiogram Re-Usable Probe Patches, 10-Pack $7.95
✔ Visible and audible display of your heart rhythm!
✔ Bright LED “Beat” indicator for easy viewing!
✔ Re-usable hospital grade sensors included!
✔ Monitor output for professional scope display
✔ Simple and safe 9V battery operation
HV Plasma Generator
Generate 2” sparks to a handheld
screwdriver! Light fluorescent tubes
without wires! This plasma genera-
tor creates up to 25kV at 20kHz from a
solid state circuit! Build plasma bulbs from
regular bulbs and more! Runs on 16VAC or 5-24VDC.
PG13 HV Plasma Generator Kit $64.95
Speedy Speed Radar Gun
Our famous Speedy radar gun
teaches you doppler effect the
fun way! Digital readout dis-
plays in MPH, KPH, or FPS. You
supply two coffee cans! Runs on
12VDC or our AC125 supply.
SG7 Speed Radar Gun Kit
Digital Voice Changer
This voice changer kit is a riot! Just
like the expensive units you hear the
DJ’s use, it changes your voice with a multitude of
effects! You can sound just like a robot, you can even
ad vibrato to your voice! 1.5W speaker output plus a
line level output! Runs on a standard 9V battery.
MK171 Voice Changer Kit $14.95
Steam Engine & Whistle
Simulates the sound of a vintage steam
engine locomotive and whistle! Also pro-
vides variable “engine speed” as well as
volume, and at the touch of a button the
steam whistle blows! Includes speaker.
Runs on a standard 9V battery.
MK134 Steam Engine & Whistle Kit
Broadband RF Preamp
Need to “perk-up” your counter or
other equipment to read weak sig-
nals? This preamp has low noise and
yet provides 25dB gain from 1MHz to well
over 1GHz. Output can reach 100m W! Runs on
12 volts AC or DC or the included 110VAC PS. Assmb.
PR2 Broadband RF Preamp $69.95
Laser Trip Senser Alarm
LTS1 Laser Trip Sensor Alarm Kit $29.95
True laser protects over 500
yards! At last within the
reach of the hobbyist, this neat kit uses a standard
laser pointer (included) to provide both audible and
visual alert of a broken path. 5A relay makes it simple
to interface! Breakaway board to separate sections.
Liquid Level Controller
Not just an alarm, but gives you a
LED display of low, middle, or high
levels! You can also set it to sound
an alarm at the high or low condition. Provides a 2A 240VAC rated
relay output. Runs on 12-14VAC or 16-18VDC.
K2639 Liquid Level Controller Kit $21.95
Is Always Fun!
✔ Build It!
✔ Learn It!
✔ Achieve It!
✔ Enjoy It!
3-In-1 Multifunction Lab
The handiest item for your
bench! Includes a RoHS
compliant temp controlled
soldering station, digital mul-
timeter, and a regulated lab power supply! All in one
small unit for your bench! It can’t be beat!
LAB1U 3-In1 Multifunction Solder Lab
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