World R/C Radio history

[Takao Shimizu]

I hope you could read this Japanese.
It is very interesting.

http://www.gem.hi-ho.ne.jp/no-koshobu/cradiocontrol/cradiocontrol.htm

Takao

[John Kim]

It is a remarkable collection of antique radios. It reminds me of my own R/C history.

I started R/C in 1960s before transistors came out. I used home-made radios and flew single channel rudder-only plane. My first plane was called Mini Mambo, a kit made by Sterling Model (now out of business). Those were the days when R/C hobby was more interesting than today's ready made everything.

[GTOVR4]

well ~~ looks likely we come from long lomg way.... look at today's Computer radio
and Digital Servo...... cant image how did your guys control airplane by that kind
radio system!!

[Takao Shimizu]

Hi Jorn,

I would like to explain my RC radio experiment, too.

Regrets, I had a few.
I had tried to make the RC superregenerative receiver when I was a junior high school student (40 years ago).
It was working, but I could not know how does it work so well, and still now.
I know how it works, but I could not confirm by SPICE simulation with such very sensitive in noisy back groud noise so far. It means I could not make improved superregenerative receiver design.

I spent a few years to study about the superregenerative receiver. Finally, I made it by FET when I was 16 years old.
But, Still I could not understand why it is working so well with very bad S/N like FM reciver without tuned.
This could be very attractive design for future receiver system, I think.

http://www.ee.umd.edu/~taylor/Electrons4.htm

Takao

[RAY GWS]

I hope you could read this Japanese.
It is very interesting.

http://www.gem.hi-ho.ne.jp/no-koshobu/cradiocontrol/cradiocontrol.htm

Takao
hi Takao,

Very Interesting !!

share a few of photos with you also.

I was told by Mr. Colby Evett that this is the oldest receiver at West Coast in the US. He is around 86 years old. He used to own and operate the Service Station at his shop for Futaba. This receiver he used was long time ago. The shop he has is the oldest Hobby shop in Los Angeles in the US -- more than 57 year and sill open.

The work bench you see in the photos is the equipment he used for repair and test TX and RX. He has a lot of antique too. He is a serious modelist. He used to make models for movies also.

My boss,Mr. Lin, CEO of GWS, my high school teacher also, also collect a lot of RC antique TX and RX.


Ray from GWS

[Takao Shimizu]

Wow Ray!

>He is around 86 years old.

I have no idea to say for own such a incredible RC system.

>more than 57 year and sill open.

I have to be there.

ps
The attached photo shows my recent development for Li-Po control.

Takao

[RAY GWS]

Wow Ray!

>He is around 86 years old.

I have no idea to say for own such a incredible RC system.

>more than 57 year and sill open.

I have to be there.

ps
The attached photo shows my recent development for Li-Po control.

Takao

I will show Mr. Colby the link you posted here. He will be very glad to see it.

another photo of the shop from Janpanese RC magazine.

[John Kim]

Shimizu-san,

Nice to know you. You must be a senior citizen too, in 60s?

I had similar experience in early days when I built transmitters and receivers from Ace kits. With wide band regenerative receivers, my plane was often shot down by interference from citizen band radios operating in the same band. As a solution, I ordered custom made crystals with freuency 1 mhz away from citizen band and managed to get away from interference.

Don't you think our hobby was more interesting in those days? Now, electronics is so advanced and complicated, that we, amateur radio fans, can not touch them anymore.

[John Kim]

Ray GWS,

I know Colby for long time. He may be the oldest living R/C fan. I bet his life was satisfying because he combined his hobby with occupation.

I used to drop by his hobby shop whenever I went to fly gliders at Hughs Hill nearby but after Hughs Hill was closed, I haven't seen him for several years now. I am surprised to hear that he is still active.

[RAY GWS]

Ray GWS,

I know Colby for long time. He may be the oldest living R/C fan. I bet his life was satisfying because he combined his hobby with occupation.

I used to drop by his hobby shop whenever I went to fly gliders at Hughs Hill nearby but after Hughs Hill was closed, I haven't seen him for several years now. I am surprised to hear that he is still active.

Hi John,

He is still doing well and healthy. He is still a serious modelist. The photo is the toy he is working on.

Ray

[Harpye]

Hi Guys!

Very interesting! Unfortunately in Germany the usage of selfregenerative RX is not allowed - without having a permission - because of the radiated emission.- I`d also like to build one of this ultralight receivers for 27 MHz - digtally protocolled and for usage in my 20 Gram Me109 but also EMI documents ( TEM Cell measurement) were refused and a reference measurement at the German Post costs very much -have you guys any idea??

SUPERHET is too heavy I routed a single super - using a Melexis Transceiver IC but this this is too big and to expensive!!!

Merry Cristmas -

Hansjoerg

[Harpye]

Hi Guys!

Very interesting! Unfortunately in Germany the usage of selfregenerative RX is not allowed - without having a permission - because of the radiated emission.- I`d also like to build one of this ultralight receivers for 27 MHz - digtally protocolled and for usage in my 20 Gram Me109 but also EMI documents ( TEM Cell measurement) were refused and a reference measurement at the German Post costs very much -have you guys any idea??

SUPERHET is too heavy. I routed a single super - using a Melexis Transceiver IC but this is too big and to expensive!!!

Merry Cristmas -

Hansjoerg

[RAY GWS]

Hi Harpye,

I chat with my friend. I think pretty much the same in the US , you also need to be approved by FCC. In the old days, they just used it.

Wherever the passion went, they just did it.

Can get a lot of story from those flyers.

Ray

[RAY GWS]

http://www.modelaircraft.org/museum/bio/Good-Walt.pdf

FYI

[Takao Shimizu]

http://www.iomclass.org/regattas/The%20first%20RC%20Boat%20211003.pdf

Takao

[RAY GWS]

Hi Takao San,

that is really old!!!

Ray

[kavana]

very good

[sfsjkid]

Thanks for the look back! There are old though relatively recent car radios here, which I found interesting also.

http://www.asahi-net.or.jp/~gj4h-ooid/

[RAY GWS]

Thanks for the look back! There are old though relatively recent car radios here, which I found interesting also.

http://www.asahi-net.or.jp/~gj4h-ooid/

A very good link..

I think my boss also collect some TXs like those.

Ray

[GWS4CEO]

Yes, I had collect a lot of many old time TX, RX and servos... ;)

http://www.rcgroups.com/forums/showthread.php?t=529630