Ramsey Kits Are Always Cool, Even In The Summer Heat!
Laser Trip Sensor
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.
LTS1 Laser Trip Sensor Kit $29.95
Practice Guitar Amp & DI
Practice your guitar without driving your family or neighbors nuts! Works with any electric,
acoustic-electric, or bass guitar. Plug your
MP3 player into the aux input and practice to
your favorite music! Drives standard headphones and also works as a great DI!
PGA1 Personal Practice Guitar Amp Kit $64.95
Passive Aircraft Monitor
The hit of the decade! Our patented receiver
hears the entire aircraft band without any
tuning! Passive design has no LO, therefore
can be used on board aircraft! Perfect for air-
shows, hears the active traffic as it happens!
Available kit or factory assembled.
ABM1 Passive Aircraft Rcvr Kit
USB Experimenters Kit
Get hands-on experience developing USB interfaces! 5 digital
inputs, 8 digital outputs, 2 analog
I/O’s! Includes diagnostic software and DLL for use with Windows based systems.
The mystery is solved with this kit!
K8055 USB Experimenters Kit
Laser Light Show
Just like the big concerts, you
can impress your friends with
your own laser light show!
Audio input modulates the laser
display to your favorite music!
Adjustable pattern & speed. Runs on 6-12VDC.
LLS1 Laser Light Show Kit $49.95
Exactly duplicates the upward and
downward wail of a police siren.
Switch closure produces upward wail,
releasing it makes it return downward.
Produces a loud 5W output, and will drive any speaker! Horn speakers sound the best! Runs on 6-12VDC.
SM3 Electronic Siren Kit $7.95
Build a time delay, keep something on
for a preset time, provide clock pulses
or provide an audio tone, all using the
versatile 555 timer chip! Comes with circuit
theory and a lots of application ideas and schematics
to help you learn the 555 timer. 5-15VDC.
UT5 Universal Timer Kit
The famous RF preamp that’s been
written up in the radio & electronics
magazines! This super broadband preamp
covers 100 KHz to 1000 MHz! Unconditionally stable
gain is greater than 16dB while noise is less than 4dB!
50-75 ohm input. Runs on 12-15 VDC.
SA7 RF Preamp Kit
20 Watt Mini Audio Amp
Delivers a super clean 20W output
from one SMT package! Ultra efficient class D design produces no heat.
PCB can be snapped into a small circle for
special applications. Runs on 18VDC for rated
output, or down to 10VDC for reduced output.
UAM2 20W Subminiature Amp Kit $34.95
Xenon Tube Strobe Light
Create amazing effects with an
authentic Xenon tube strobe light!
Creates a super bright white
FLASH with a variable speed of
2 to 20 flashes second. Just connect 110VAC
and and you have a complete strobe light!
K5300 Xenon Tube Strobe Light Kit
Air Blasting Ion Generator
Generates negative ions along with a
hefty blast of fresh air, all without any
noise! The steady state DC voltage
generates 7.5kV DC negative at 400uA,
and that’s LOTS of ions! Includes 7 wind
tubes for max air! Runs on 12-15VDC.
IG7 Ion Generator Kit
Stereo Ear Super Amplifier
Ultra high gain amp boosts audio 50
times and it does it in stereo with its
dual directional stereo microphones!
Just plug in your standard earphone or
headset and point towards the source.
Incredible gain and perfect stereo separation!
MK136 Stereo Ear Audio Amp Kit
Voice Activated Switch
Voice activated (VOX) provides a
switched output when it hears a
sound. Great for a hands free PTT
switch or to turn on a recorder or light!
Directly switches relays or low voltage loads up to
100mA. Runs on 6-12 VDC.
VS1 Voice Switch Kit
Touch on, touch off, or momentary
touch hold, it’s your choice with this
little kit! Uses CMOS technology.
Actually includes TWO totally separate touch circuits
on the board! Drives any low voltage load up to
100mA. Runs on 6-12 VDC.
TS1 Touch Switch Kit
42 Watt Mini Audio Amp
The big brother to the UAM2, it delivers 42W of crisp clear stereo power all
in a 2½” board! One single SMT device
operating 87% efficient creates virtually no
heat! Selectable gain, pop filter and a lot
more! Runs on 10-18VDC (18VDC for full output).
UAM4 42W Subminiature Amp Kit $69.95
RF Actuated Relay
Just what you need when
adding a preamp or power amp
in line with an antenna! Auto
senses RF and closes an on-board DPDT relay that’s
good to UHF at 100W! Also great to protect expensive
RF test equipment. Senses as low as 50m W!
RFS1 RF Actuated Relay Kit
The kit has a pulsing 80 volt tickle
output and a mischievous blinking LED. And who can resist a
blinking light and an unlabeled
switch! Great fun for your desk,
“Hey, I told you not to touch!” Runs on 3-6 VDC.
TS4 Tickle Stick Kit $12.95
SMT Multi-Color Blinky
The ultimate blinky kit! The 8-pin microcontroller drives a very special RGB LED
in 16 million color combinations! Uses
PWM methods to generate any color with the micro,
with switchable speed selection. SMT construction
with extra parts when you lose them! 9V battery.
SBRGB1 SMT Multi-Color Blinky Kit $29.95
Encodes OR decodes any tone 40 Hz
to 5KHz! Add a small cap and it will go
as low as 10 Hz! Tunable with a precision
20 turn pot. Great for sub-audible “CTS” tone squelch
encoders or decoders. Drives any low voltage load up
to 100mA. Runs on 5-12 VDC.
TD1 Encoder/Decoder Kit
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 Nixi Tube Clock
One of the neatest retro
clocks available today! Nixie
Tubes made their debut in
1954 and we brought them
back in 2008! Brilliant 12/24 hour . 7” orange display,
soft fade, and more. Hand crafted teak and maple.
IN14TM Nixi Tube Teak Maple Clock Kit $329.95
HV Plasma Generator
Generate 2” sparks to a handheld
screwdriver! Light fluorescent tubes
without wires! This plasma generator 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
Broadband RF Preamp
Got the DTV blues? Does the new
UHF signal just not make it to your
house? This little preamp covers
1MHz to 1GHz! Our proven PR2 provides
over 25dB of gain with a 50-75 ohm input impedance. Great fix for DTV! Assembled & tested.
PR2 Broadband Preamp, Asmb
IC AM/FM Radio Lab
Learn all about AM/FM radio theory, IC theory, and end up with a
high quality radio! Extensive
step-by-step instructions guide you
through theory, parts descriptions, and the hows and
whys of IC design. Runs on a standard 9V battery.
AMFM108K AM/FM IC Radio Lab Kit $34.95
USB DMX Interface
The mystery of professional stage lighting
solved! It’s called DMX,, and it provides
up to 512 channels of control over a
daisy chained XLR audio cable! Control
lights, lasers, fog machines, or any other effect with
DMX control from your laptop! USB controlled.
K8062 USB DMX Interface Kit $62.95
3-In-1 Multifunction Lab
The handiest item for your
bench! Includes a RoHS
compliant temp controlled
soldering station, digital multimeter, 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