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Jun 22, 2012, 10:38 AM
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hlsat's Avatar
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Vintage & Old Timer Radio Control Systems

Hi all.

I start a new theater for the old remote control systems (vintage).
If you want to stay the topic, if not to delete from administrators.
My name is Elias Greece and the nickname it seems.
My real job is Electronic Engineer with over 40 years dealing with these systems and general electronics. (Repair, construction and design of various electronic systems.)
Now I'm retired and I have much free time engaged in the hobby.
I apologize for my English but it is not my normal language.
Here I want to deal with the old remote control systems of our hobby.
Uploading photos of old systems, circuit diagrams (transmitter - receiver - servo and all electronic systems),
patent ideas, alterations, repairs, etc.
Expected to show much interest and participation from many friends.

Thanks for beginning, Elijah.
Last edited by hlsat; Jun 22, 2012 at 10:56 AM.
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Jun 22, 2012, 10:41 AM
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Beginning to some photos from my personal collection of electronic systems.

Brown color is Futaba 2ch 27 Mhz emission.

Black color is Futaba 3ch 27 Mhz emission.
Last edited by hlsat; Jun 22, 2012 at 10:48 AM.
Jun 22, 2012, 10:48 AM
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Daedalus66's Avatar
Nice to see an interest in the old stuff.

Here's a site you'll find interesting

It deals both with real old-time radios (mainly single channel and early multichannel such as reed systems) and with modern emulations.

I just finished putting together a simulated single channel transmitter that uses a Fly Dream 2.4 module. An emulator board in the transmitter makes the radio in the model (rudder, elevator, throttle) behave as though operated by a compound escapement. Press and hold the button gives right, press twice and hold gives left, press three times and hold gives "kick-up" elevator, and a very quick blip of the button changes the throttle setting.

Fun to recall the days of 50+ years ago when that was advanced control. I'm flying it in a 36" electric model that flies like the ones we had in those days.

Next project, get a 6-channel Kraft Reed system going on 27.
Jun 22, 2012, 10:56 AM
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I have many plans for radio remote control system converters.
Patience be dug from the drawers of the lab.
We will make good company here. Electrons are all my life.

Elijah Greece.
Jun 22, 2012, 01:47 PM
coriolan's Avatar
There is much interest in vintage radio systems, quite relaxing compared to the "geeky" radios we have now! Surprisingly the 27 Mhz band is now very usable since the CB madness of the 70's is over. As Daedalus66 noted it is possible to make a proportional radio behave like an escapment control while actually using a servo. But its even better to use an actual vintage radio if possible. The was a thread a long time ago on the subject:
Antique RC Radios-Their evolution (9 min 43 sec)
Last edited by coriolan; Jun 22, 2012 at 02:06 PM.
Jun 22, 2012, 03:15 PM
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I read the old theater Coriolan.

Refers to a very old electronic systems, tube transmitters, batteries huge, huge material.
I do not have such systems remote control in front of me but certainly in my old store will have something there.
Plans I have many of these systems with tubes.
The band 27 Mhz is for CB madness but 7 frequencies were free to Greece for radio control systems.

Black 26.795
Brown 26.995
Red 27.045
Orange 27.095
Yellow 27.145
Green 27.195
Blue 27.245

The signal modulation in AM.

Thanks Elijah.
Last edited by hlsat; Jun 22, 2012 at 03:33 PM.
Jun 22, 2012, 03:47 PM
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Coriolan like him.
Jun 22, 2012, 05:20 PM
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Originally Posted by hlsat
Coriolan like him.
Ah,the good old days with a couple of vacuum tubes and a pair of batteries, one of them 135v. That's 90 AA cells all soldered together in series! It's nice to be able to emulate with modern equipment, but my hat off to those who revive the real thing.
Jun 22, 2012, 09:02 PM
Registered User
Good information also available under RCU:
Golden Age, Vintage & Antique RC
and sub section "Vintage Radio Control Systems"
. Babcock Xmitter and Receiverr
. Galloping Ghost
. Golden Age, Vintage & Antique RC -
. Vintage Escapements
Alan's Hobby, Model & RC FAQ Web Links
(quick search = Ctrl+F)

Alan T.
Jun 23, 2012, 04:15 AM
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hlsat's Avatar
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A great teacher who helped me even with correspondence in those days was the principal Jim Oddino who wrote articles in the magazine RCM.
Somewhere I still have the answers to the letterhead.
Very good and helpful.

Jun 23, 2012, 06:10 AM
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They dont make them like they used to.

Jun 23, 2012, 07:30 AM
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hlsat's Avatar
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The electronic circuit of the above transmitters Futaba 27 Mhz
only the pieces of the emissions.

Elijah Greece.
Jun 25, 2012, 01:57 PM
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The plan then modulator AM Futaba 2 - 3 ch.

Elijah Greece.
Last edited by hlsat; Jun 25, 2012 at 02:39 PM.
Jun 25, 2012, 02:24 PM
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Question knowledge.

These transmitters Futaba but other brands controls, had no mandate to reverse servo.

How this was done without any intervention at all internal components.
Tx - Rx - Servo.

I expect your answers.

Elijah Greece.
Jun 25, 2012, 02:26 PM
AndyKunz's Avatar
In the old days you could get normal or reverse servos. A reversed servo had the leads reversed to the motor and potentiometer.


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