The Building Blocks!
Passive Air Band
✔ Monitors the entire aircraft band without tuning!
Monitors The Entire ✔ Passive design, can be used on aircraft, no local
Band For Activity... oscillator, generates and creates no interference!
Without Any Tuning! ✔ Great for air shows
✔ Patented circuit and design!
For decades we have been
known for our novel and
creative product designs.
Well, check this one out!
An aircraft receiver that
receives all nearby traffic
without any tuning. It gets
better... there is no local
oscillator so it doesn't produce, and can't produce,
any interference associated
with all other receivers with
an LO. That means you can
use it onboard aircraft as
a passive device! And
what will you hear? The closest and strongest traffic, mainly, the one you're sitting in! How unique is this? We have a patent on it, and that says it all!
This broadband radio monitors transmissions over the entire aircraft band of 118-136 MHz.
The way it works is simple. Strongest man wins! The strongest signal within the pass band of the radio will
be heard. And unlike the FM capture effect, multiple aircraft signals will be heard simultaneously with the
strongest one the loudest! And that means the aircraft closest to you, and the towers closest to you! All without any tuning or looking up frequencies! So, where would this come in handy?
1. At an air show! Just imagine sitting there listening to all the traffic as it happens
2. Onboard aircraft to listen to that aircraft and associated control towers
3. Private pilots to monitor ATIS and other field traffic during preflight activities (saves Hobbs time!)
4. Commercial pilots to monitor ATIS and other field traffic as needed at their convenience
5. General aircraft monitoring enthusiasts
Wait, you can't use a radio receiver onboard aircraft because they contain a local oscillator that could generate
interfering signals. We have you covered on that one. The ABM1 has no local oscillator, it doesn't, can't, and
won't generate any RF whatsoever! That's why our patent abstract is titled "Aircraft band radio receiver which
does not radiate interfering signals". It doesn't get any plainer than that! Available as a through hole hobby
kit or a factory assembled & tested SMT version.
ABM1 Passive Air Band Monitor Kit
ABM1WT Passive Air Band Monitor, Factory Assembled & Tested SMT Version
118 MHz to 136 MHz
Patented Passive Detector
Less than 2 uV for detectable
700m W, 8-24 ohms
3.5mm stereo phone
Headphone cord coupled
2.25” x 2.8” PC Board
2.5” x 4. 6” x . 9” Case
4 oz. with battery
High Resolution Air Pressure
And Elevation Sensor
Measures ✔ Pressure resolution greater than 0.0001kPa! Elevation To ✔ 128 x 64 pixel graphical display! ✔ Shows realtime elevation & pressure changes!
A Third Of An ✔ USB computer interface for easy data transfer!
Inch & Air ✔ 13,824 samples of FLASH storage available!
Pressure In ✔ Special pilots menu
9 Formats! ✔ Multiple built-in alarms
We really did it this time! The UP24 is one of our most advanced kits to date, and an absolute MUST for anyone serious about the environment around us! But the applications only begin there. The unique design
allows unprecedented super high resolution measurements and display of absolute atmospheric air pressure.
The UP24 senses ambient air pressure and critically calculates elevation with unheard of precision! Using a
highly sensitive sensor and 24-bit A/D converter in a special noise-immune design, less than 1/3" of an inch
of elevation resolution is achieved! YES, we said 1/3 of an inch! This high accuracy and resolution opens the
door to a host of sophisticated environmental air pressure monitoring applications.
Unlike your normal run-of-the-mill barometer, air pressure is sensed in Pa's or kPa's. What are those you may
ask? Pascals or KiloPascals. However, don't be afraid, for your convenience, and to fit any application you
may have, it is also displayed in millibars, bars, PSI, atmospheres, millimeters of mercury, inches of mercury,
and feet of water! Take your pick! The range of the UP24 is 15kPa to 155kPa.
We've talked about air pressure, now let's talk about elevation! The incredibly precise 24 bit A/D converter in
the UP24 looks at the air pressure and converts it to elevation above sea level. In both graph and text, the
elevation is displayed to a resulution of 1/3”! Yes, I said 1/3 of an inch! The applications for the super accurate elevation meter are endless. From watching and recording elevations during hiking trips to measuring
and recording the wave heights on boats! Let your imagination take over from there!
What if you're in the field and you want to save data captured in your UP24? The built-in FLASH storage provides 13,824 samples of storage. Then you can transfer your data to your PC with a standard USB interface.
While the UP24 is small enough to be kept in your coat pocket it boasts a large 2.78" x 1.53" 128x64 pixel
LCD display screen making viewing easy. Display modes include both realtime pressure and elevation graphs
as well as pressure and elevation statistics. There are 12 user selectable sample rates from 1/10th of a second
all the way up to every 15 minutes.
Needless to say, you cannot put all the specs and screen shots in the limited space of this ad! Visit our website at www.ramseykits.com for full specs and information. If you're looking for the finest air pressure and elevation sensor, check out the UP24, truly a marvel in the industry! Available in a ready-to-build kit or a factory
assembled and tested version. Check our website at www.ramseykits.com for more information!
UP24 High Resoultion Air Pressure/Elevation Sensor Kit
UP24WT High Resolution Air Pressure/Elevation Sensor, Factory Assembled & Tested
The kit has a pulsing 80 volt
tickle output and a mischievous blinking LED. And who
can resist a blinking light! Great
fun for your desk, “Hey, I told you not to touch!”
Runs on 3-6 VDC
TS4 Tickle Stick Kit $12.95
Super Snoop Amplifier
Super sensitive amplifier that will
pick up a pin drop at 15 feet! Full
2 watts output. Makes a great “big
ear” microphone. Runs on 6-15 VDC
BN9 Super Snoop Amp Kit $9.95
Produces a very pleasant, but
obnoxious, repetitive “plink, plink”
sound! Learn how a simple transistor
oscillator and a 555 timer can make such
a sound! Runs on 4-9 VDC.
EDF1 Dripping Faucet Kit $9.95
Our #1 Mini-Kit for 31 years!
Alternately flashes two jumbo red
LED’s. Great for signs, name badges,
model railroading, and more. Runs on 3-15 VDC.
BL1 LED Blinky Kit $7.95
Senses temperature and
changes the chirp accordingly. Can actually determine
temp by chirps! Runs on
9VDC battery. Speaker included.
ECS1 Cricket Sensor Kit $24.95
Produces the upward and downward wail of a police siren.
Produces 5W output, and will drive
any speaker! Runs on 6-12 VDC.
SM3 Electronic Siren Kit $7.95
Build anything from a time delay
to an audio oscillator using the
versatile 555 timer chip! Comes
with lots of application ideas. Runs on
UT5 Universal Timer Kit $9.95
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! Runs on
6-12 VDC and drives a 100 mA load.
VS1 Voice Switch Kit $9.95
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. Runs on 5-12 VDC and
will drive any load up to100 mA.
TD1 Encoder/Decoder Kit $9.95
Super broadband preamp from
100 KHz to 1000 MHz! Gain is
greater than 20dB while noise is less
than 4dB! 50-75 ohm input. Runs on 12-15 VDC.
SA7 RF Preamp Kit $19.95
Touch on, touch off, or momentary
touch hold, your choice! Uses CMOS
technology. Runs on 6-12 VDC and drives any
load up to 100 mA.
TS1 Touch Switch Kit $9.95