Register to reply

Use 433MHz transmitter for video rca?

by Tesladude
Tags: 433mhz, transmitter, video
Share this thread:
Tesladude
#1
Apr27-14, 10:00 PM
P: 135
Hi I want to transmitt a video rca signal with dome of the 433mhz transmitter and receiver modules you can get on ebay for cheap.

I have used them alot and have accomplished transmitting data through picaxe microcontrollers successfully.

But could I use it to transmitt a video rca signal so that the output can be connected to a television?

I think I read that rca is at only a few khz and I have been transmitting data at 4mhz so there should be no problem with clarity.
Has anyone done this?
Will it work?
Phys.Org News Partner Engineering news on Phys.org
Student develops filter for clean water around the world
Developing the next evolution in underwater communication
Compact vibration harvester power supply with highest efficiency opens door to "fix-and-forget" sensor nodes
davenn
#2
Apr28-14, 01:03 AM
Sci Advisor
PF Gold
davenn's Avatar
P: 2,465
the video will most likely still be pretty crappy
a standard video signal is ~ 7MHz bandwidth

Also 433MHz isn't really for that sort of thing ...that ISM band is mainly for narrow bandwidth/low data rate applications at a low power level

cheers
Dave
Tesladude
#3
Apr28-14, 04:11 PM
P: 135
do you know any way to accomplish this without buying an expensive rca transmitter?

dlgoff
#4
Apr28-14, 06:19 PM
Sci Advisor
PF Gold
dlgoff's Avatar
P: 2,701
Use 433MHz transmitter for video rca?

What distance?
davenn
#5
Apr28-14, 06:26 PM
Sci Advisor
PF Gold
davenn's Avatar
P: 2,465
Quote Quote by dlgoff View Post
What distance?
yeah that's a good Q

most of those433 MHz modules are only ~ 10 mW
and 10mW spread across 7MHz is not going to go far


You mite want to look at 2.4 GHz modules
There's already a mass of 2.4GHz A/V sender and receiver units on the market
.... no point in making it hard for yourself

a lot of electronics retailers sell complete units ready to use

ohhh and by the way, Tesladude, get used to using the correct notations, it saves confusion
MHz NOT mhz


Dave
berkeman
#6
Apr28-14, 06:50 PM
Mentor
berkeman's Avatar
P: 40,652
Quote Quote by davenn View Post
ohhh and by the way, Tesladude, get used to using the correct notations, it saves confusion
MHz NOT mhz
Yeah, a 433 milliHertz channel is going to be mighty slooooooooowwwwww....

(I fixed the thread title to MHz now.)
davenn
#7
Apr28-14, 07:51 PM
Sci Advisor
PF Gold
davenn's Avatar
P: 2,465
cheers
Mike

D
Tesladude
#8
Apr29-14, 10:23 PM
P: 135
Yes!
Mhz, not mhz.
I hate it when others make that mistake so I probably should not be making it!



I use a 433"M"hz transmitter that is 1.5 watts and is supposed to reach about 3Km.
I would like to transmit the video signal as close to 3Km as I can get.
meBigGuy
#9
Apr29-14, 11:44 PM
P: 1,072
"I think I read that rca is at only a few khz"

Not sure where you got that from.

How do you plan to modulate the signal? Wide bandwidth composite video onto the 433MHz carrier? No audio, I assume.
davenn
#10
Apr30-14, 05:46 PM
Sci Advisor
PF Gold
davenn's Avatar
P: 2,465
Yes!
Mhz, not mhz.
I hate it when others make that mistake so I probably should not be making it!
NO not Mhz

its MHz Hz = Hertz after Mr Hertz

Dave
davenn
#11
Apr30-14, 05:48 PM
Sci Advisor
PF Gold
davenn's Avatar
P: 2,465
Quote Quote by meBigGuy View Post
"I think I read that rca is at only a few khz"

Not sure where you got that from.
not sure what you are referring to ?

rca should be RCA as in the plug/socket, not ideal but commonly used for composite video signals

Dave
meBigGuy
#12
Apr30-14, 11:13 PM
P: 1,072
I was refrerring to the OP's statement in post 1 "I think I read that rca is at only a few khz"


Register to reply

Related Discussions
What is the difference between NANC transmitter and co-transmitter? Biology 1
Editing a video, the rendered video is way too big Computers 11
Cool Video, human powered flight, first video General Discussion 1
Reducing RF power of video transmitter Electrical Engineering 32
Video Requests, Do These Video Tutorials Exist? Math & Science Learning Materials 2