page of the Norcim club website….
future reading. Thanks!
SOME USEFUL LINKS………
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Page (Page 1)
- History of the
beginnings of the norcim website related to the
founders of Micron Radio Control in the UK 1970s.
- Visit map showing recent
visitors to the Norcim website….care of
- Links to other pages of
the Norcim website.
- Fault finding notes
regarding Micron receiver kits of the seventies to nineties.
- Micron transmitter
history and fault finding notes.
- Micron dual conversion
receiver technical notes including circuit diagram and method of working.
- Vacuum de-soldering tool
- An R/C transmitter
output tester circuit for use at up to ten metres distance.
Norcim page 2
the Micron FET receiver on the 40MHz band. Simple component value changes
- Micron transmitter
details on 40MHz and the use of Futaba crystals.
word or two about Micron transmitter output strength and how it can be
of Micron transmitter transmit sections with their various plug-in coder
integrated circuit servo amplifiers using the World Engines WE3141 IC. Use
of pot lube to prevent servo twitching.
after your transmitter telescopic aerial. A necessary maintenance using
27, 35, 40, and 72MHz transmitters.
of an ‘on board’ glow plug energizer to allow heating of a four stroke
plug at low revs. Better tick-over.
on-board circuit to detect the charge state of receiver batteries.
- A circuit
to power 2volt glow plugs from a 12 volt battery for engine starting.
Pratt talks about his PIC based encoder conversion of a Micron
Norcim page 3
- A 35MHz and 40MHz radio
control transmitter circuit.
- Electric powered V tail
glider designed by the late Barrie Allen.
- R/C receiver servicing
tip from George Beeler (NASA research labs).
- A historic experiment to
determine the effect of engine vibration on a radio control receiver.
- Words from Malcolm Perry
about using the 459MHz Radio Control band.
- Joystick wiring circuit
used by many radio control transmitters.
- A servo fail-safe
details by Allen Pratt.
- Mohamed Shiraz Kaleel talks about D.I.Y construction of brushless
- A tribute to the RCC
Radio Control Council of the UK. Also detail of UK. EU. And world radio
Norcim page 4
Electric Flight. Detail of simple speed controller and inexpensive 540
size electric motor.
servo tester circuit costing less that one UK£.
on Fast Charging of Nickel Cadmium and Nickel Hydride battery packs. Basic
circuit for -∆V cut off.
- Circuit for checking 27,
35, 40 and 72MHz Transmitter output at 10 metres distance.
for checking 2.4 Gig transmitters from Dave1993 at RCGroups.com
constant current circuits for charging Nickel Cadmium and Nickel-Metal
Hydride battery packs.
relay switch circuit for electric flight brushed motors.
model alarm circuit using an LM555 timer IC.
details of early Galloping Ghost systems. Gallatrol
transmitter details. Early joystick mechanics. Receiver pictures. Model
type. DIY actuator details using the popular Mighty Midget geared electric
motor of the 1950s.
proportional rudder systems (history) with suggestion of modifications to
reduce actuator (servo) current.
circuit suggestion from David Caudrey for a fast rudder only pulser or a rudder/elevator for ‘Smoothed’ Galloping
of the first Analogue Feedback servos.
circuits that may have helped Analogue servos.
taper charge circuit for 2 volt glow plug batteries. (Lead Acid sealed
security awning light. OK an odd input for the site but some modellers do
have a caravan. My excuse anyway!
- A transmitter
circuit from Randal Munroe. (Randal’s circuit components will need much
use of Google).
Norcim page 5
- Radio Receiver Testing
(Now historic) by the late R/C Guru, Dave McQue of
Bletchley Park UK and UK Radio Control Council.
Norcim page 6
- Brief History of model
- The Doug Spreng and Don Mathes digital control system.
- A seven channel digital
transmitter encoder circuit for radio control using easy to get parts.
- Plug-in channel mixer
circuit module for V tail and Delta model aircraft. Possible use with twin
electric motor model boats.
- Digital receiver encoder
circuit using easy to get parts.
- Another simpler digital
transmitter encoder from Harry Lial.
- A digital receiver
decoding circuit from Harry. Easy to get DIY parts.
- Comments on Airborne
Radio Control Equipment from the late Dave McQue.
RCC Radio Control Council.
- Thoughts on Single and
Dual Conversion radio control receivers.
- Further thoughts
regarding Single Conversion R/C receivers.
Norcim page 7 (This page tends to
cover commercial news and products)
1. News from Micron
Radio Control a small UK based R/C company that began
2. Kymodel’s Lobmaster radio control Fishing
Boat Review. A ready to go package complete with all radio control components.
3. The Art-Tech ‘Wing
Dragon’ ARTF flying model, complete with R/C equipment……Review.
4. Flight Simulator
from Art-Tech Review.
precision engineered micro servos review.
6. RFCandy….a superb electronics component supplier using minimum
7. Just Engines…UK
supplier of model engines and accessories.
8. Aerial Photography?…you need to go to this site First.
9. Review of the RadioLink 2.4Gig transmitter and receiver for radio control
Norcim page 8
from the Long Marston Airshow 2012. (Stratford
- Mike Hawkins
Retro Valve Radio Control equipment. With link to early valve circuitry.
- David Caudrey with his
early 27 MHz valve transmitter memories.
early model aircraft using a two valve receiver.
Hill Two Valve receiver details.
Norcim page 9
of David Caudrey. Fellow writer of the Norcim
website. Includes background history of UK radio control systems.
- Skyleader transmit section
- Skyleader coder circuit using Signetics NE5044.
- Skyleader Transmitter Nicad arrangement.
- Skyleader mains charger circuit.
- Skyleader servo circuit using the
Mitsubushi MC51660L chip.
- J.R. 35MHz transmitter section circuit.
35MHz Competition receiver circuit.
35MHz transmitter section circuit.
XP NE5044 encoder circuit (basic).
XP joystick input circuits.
XP ancillary controls circuit.
AM 27MHz transmitter circuit.
motor switch circuit.
Norcim page 9
Rx to Servo circuit. (produces 5volts). Original
Design by DC.
line converter circuit for speed controllers to work with the Futaba FASST
2.4Gigahertz system. Original Design by DC.
- Digifleet XP-FM standard receiver
- digifleet XP-FM mini receiver 4
servo circuit and PCB layout.
4 Chan FM ‘Attack’ transmitter coder circuit.
4 Chan FM ‘Attack’ transmitter RF transmit section.
27MHz AM transmitter circuit.
- Gallatrol Galloping Ghost
Valve signal generator circuit.
- Proxxon mini circular saw drive
speed control circuit.
battery monitor circuit.
- A -∆V
(peak detect) charger for Nicad and NMHydride batteries.
Norcim page 10
timed constant voltage battery charger circuit.
LIPO battery charger circuit.
Zero Volts Drop Diode circuit.
- Testing Rig for brushed
and brushless electric flight motors.
Sensor circuit for RPM.
to Voltage conversion circuit.
to Current conversion circuit.
circuit for Digital Tachometer.
Amp Shunt construction details.
Garden Lamp circuit (for interest).
transmitter coder circuit.
transmit circuitry. (RF section)
M23 six channel receiver notes plus circuit.
Mystery single channel Tone transmitter circuit circa 1960.
Norcim page 11
Peak Charger circuit for NICAD and NIMH batteries.
circuit for 2 or 3 Cell LiPo batteries.
- A six
cell commercial NC/NH charger circuit.
Receiver battery monitor.
Mini Receiver circuit.
speed controller circuit.
tester and speed controller tester circuit.
detector circuit. Possible speed gun for models.
- Nicad re-cycling circuit.
Reduce memory effect of batteries.
- A 50MHz frequency meter circuit.
Norcim page 12
1. Excellent Hobby
Reviews from R/C Universe with video content.
Norcim page 13
1. OPERATIONAL AMPLIFIERS.
Their use and applications.
2. Fleet R/C systems
servo reverse and throw circuitry.
3. A simple servo throw
and reverse circuit.
4. An AC millivolt
5. Frequency to phase
6. Rate of change
circuit. -∆V Charger use ?.
7. The Wien Bridge
circuit history and operation.
8. Voltage to current
9. Experimental charge
circuit based on 8 above.
The non-inverting Integrator circuit.
Norcim page 14
discussion about tuned circuits used in radio Control.
Pi-network Filter matching circuit in mathematical detail.
Norcim page 15 DAVID CAUDREY’s in depth look at discrete transistor amplifiers, both
Bipolar and Field Effect (JFET) types are covered In great detail.
Norcim page 16 (fragmented notes from the Norcim
Allen with a wonderful group picture from Tasmania.
AM 27MHz receiver circuit.
of Micron’s PCB receiver.
- DC in
thinking mode of the Micron Dual conversion receiver.
Coles info re the Dorfler
Caudrey’s reverse engineered Dorfler
historic electrified Kiel Kraft Ladybird.
British model engine manufacturers that have bitten the dust!
re the RCM+E Eaglet being electrified.
Anodising of engine parts. Great detail by David Coudrey.
Gascoin’s conversion notes of a vintage JR radio
Norcim page 17
Regenerative Receivers History. (A David Caudrey Discussion).
details and working concept.
filled valve circuit.
super regen circuits.
early ‘IVY’ valve carrier wave receiver details.
Hill Two Valve receiver circuit and photo.
Norcim page 18 (notes from Email activity).
versa FM on early 27MHz and 35MHz radio control systems
about dual pulse proportional systems (after Galloping Ghost).
about how ‘FM’ frequency modulation is done in Transmitters.
are there no ‘Home Brewed’ radio control systems now ?
- R/C Magazine advertising of yesteryear.
kits and DIY.
from Peter covering his 2.4MHz conversion of a JR transmitter and
modified West Wings Toucan model.
saga of ‘black wire corrosion’ .
2.4 Gigahertz R/C all it’s cracked up to be ?
…..a discussion from Barry Lennox.
Gig problem from Michael.
powerful commercial 2.4 Gig transmitters.
Bipe just built from 70 year old kit. By David
design electric glider by David C.
the model Rx aerials for 27,35, 72 MHz Barry
- plug-in crystals operation and
Norcim page 19
Mystery 35MH Transmitter circuit !
Caudrey’s Retro Receiver Project. An attempt to
re-create a very early valve receiver but with an interesting twist for
Mk11 Guidance System Receiver plus schematics.
Mk11 Guidance System Transmitter notes and schematic.
and findings of the above early radio control system.
early Valve Receiver circuits used by manufacturers.
Retro-Receiver project by David Caudrey with improvements that could have
been used at the time.
notes and findings of the above project as it developed.
Norcim Page 20
Berry looks back to the ‘Single Stick’ flying days and could we get back
to R/C transmitter controls offering the nearest thing to full size
with single stick transmitter layout.
solution to the above.
to the joystick saga with thoughts of an ‘electronic’ joystick with no
moving parts !
Puppeteer ! A project of replacing a 40 size glow
motor with similar power brushless motor.
Newcomers Guide about the 2.4 Gigahertz Radio Control Band
interesting facts about our well used model control frequencies
Spectrum radio control systems by Guru Barry Lennox. The surprising
history of 2.4Gig radio and its future is discussed.
Norcim Page 21
Whitehead’s Retro radio control project. A taste of yesteryear.
R/C model background of John Whitehead.
about a DIY transmitter using the 35MH R/C waveband.
novel method of circuit board production using an Epson SX210 ink jet
tips for etching a printed circuit board.
Overhead Projector film for PCB production.
and assembled printed circuit boards for the Retro transmitter.
simple four channel PPM coder for the Retro transmitter with servo
section for the ongoing project above.
details of the exciting nordaveVTU. Device for
altitude assist in model aircraft. Dave Caudrey’s
latest invention (with a twist!).
revamp of Vic Smeed’s ‘Tomboy by David Caudrey
Norcim Page 22
- A 2.4
Gigahertz transmitter output detector. (Wave Checker Device). By David
micro ammeter project. (Capable of measuring tiny current flow). By David
blast from the past…former Micron customer updates vintage R/C
transmitters with leading edge technology. By Paul Luby.
analogue servo design that equals the performance of the normal ‘digital’
versions. By Jean-Marie Piednoir.
Retro Galloping Ghost model using up to date actuator and electronics. By
Norcim Page 23
Increase the range of your transmitter with an
aftermarket high gain antenna ? Robert Coggan
discusses the implications.
Converting a scale Mustang slope R/C model to electric flight. David Caudrey’s latest project.
Norcim Page 24
Flame Wheel F550 hexacopter from Brian Boyde. (includes the Aldi Toy
Norcim Page 25
DIY anodizing notes from David Caudrey.
Superman 2. You will be astounded at the picture! Thanks to Rob Green.
flying infra-red transmitter details from Georg Bohmeke.
David Caudrey’s Nucleonics website is only a click away !
with more diversified content. Worth a visit.
documents of possible interest :-
Who else is
using your Radio Control Frequency ? A list of commercial and
industrial devices that use your Radio Control Frequency.
Vintage Model Control Valve Circuits from Mike
Newcomers guide of 2.4 Gigahertz model control.
A simplified non-technical document listing the many advantages of using 2.4
About me, the originator
of this norcim website… my real name is
Terry Tippett but I often use the word ‘norcimguy’ to
associate with the website.
The UK Free
Light Bulb Fiasco how people in the UK were charged a billion pounds
for Free energy saving light bulbs that didn’t work !
End Of Life Concerns. The beginnings of chatter about the end of life and the
help that could be available.
solution but expensive.
draconian UK solution and heart-breaking
http://www.finalexit.org/final-exit-book.html a DIY
alternative providing no other person helps.
Dignity in Dying massive
groundwork done by this UK
charity from early days with Sir Ludovic Kennedy
(wife Moira Shearer). Sir Terry Pratchett and Sir Patrick Stewart together with
many other eminent patrons are now involved.
Genocide began in the UK Aug 2013
And now restarted in September 2015. Has
proved to be a barbaric method.
Disclaimer: Note that the above documents are included by
the norcim webmaster, Terry Tippett. They are not
necessarily the views of any contributors co-Authors
of the norcim website. I hope that they do not offend
in any way…..if they do please
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Thanks for reading !