HANDzCLEANx
New Member
Hi
I have a real urgent project that needs completing and I was hoping you gous can maybe help me
with some aspects.
I have electronic knowledge;I know the most of the fundementals but not full enough knowledge to
complete my project.
I am embarking on a radio/data-transmition project.
OVERVIEW:
I have 4 transmitters and one(ore more) reciever(s) wich are x distance appart.
When a button is pressed on the tx then the rx activates a digital 1 at a certain output(from there I know what to do).
Every tx,when transmitting(switch is closed), activates a diffrent output on the rx(parralel outputs).
I have no knowledge of radio(!!!), only bits and bieces.
My questions:
1))) Can I use the morse-code(CW) concept with this? I figured if I give each tx a unique
pulsed frequency(a amplifiede 555-timer), and give the rx corresponding filters(normal active rc-filter then connected to a "detector"),
then I have precisely what I want, but is it practical and will it work....??
example:
The 4 transmitters are tuned to 1Mhz, 2Mhz, 3Mhz, 4Mhz pulsed(non-ideal sine) respectively.
The 1 reciever has 4 parralel,highly selective, filters: 1Mhz, 2Mhz 3Mhz 4Mhz respectively.
When the 3Mhz-transmitter is activated, the 3Mhz-filter(or any other) is "activated" while the rest of the
filters are not(until the apropriate tx is transmitting).
2))) What antenna should I use??(please dont say dipole or unipole ..or any-pole.. )
I want as small as possible antenna.
I saw some radios with only a small wire,instead of a big "bunny-eared", for antennas, how can I implement
this??
Please please please help me, you guys are the only resources that I have for this project(and some out-dated books).
This is an educational and a much needed project, it's not for a school or varsity but for enhancing my
parents' home.
CHEERS
*******
I have a real urgent project that needs completing and I was hoping you gous can maybe help me
with some aspects.
I have electronic knowledge;I know the most of the fundementals but not full enough knowledge to
complete my project.
I am embarking on a radio/data-transmition project.
OVERVIEW:
I have 4 transmitters and one(ore more) reciever(s) wich are x distance appart.
When a button is pressed on the tx then the rx activates a digital 1 at a certain output(from there I know what to do).
Every tx,when transmitting(switch is closed), activates a diffrent output on the rx(parralel outputs).
I have no knowledge of radio(!!!), only bits and bieces.
My questions:
1))) Can I use the morse-code(CW) concept with this? I figured if I give each tx a unique
pulsed frequency(a amplifiede 555-timer), and give the rx corresponding filters(normal active rc-filter then connected to a "detector"),
then I have precisely what I want, but is it practical and will it work....??
example:
The 4 transmitters are tuned to 1Mhz, 2Mhz, 3Mhz, 4Mhz pulsed(non-ideal sine) respectively.
The 1 reciever has 4 parralel,highly selective, filters: 1Mhz, 2Mhz 3Mhz 4Mhz respectively.
When the 3Mhz-transmitter is activated, the 3Mhz-filter(or any other) is "activated" while the rest of the
filters are not(until the apropriate tx is transmitting).
2))) What antenna should I use??(please dont say dipole or unipole ..or any-pole.. )
I want as small as possible antenna.
I saw some radios with only a small wire,instead of a big "bunny-eared", for antennas, how can I implement
this??
Please please please help me, you guys are the only resources that I have for this project(and some out-dated books).
This is an educational and a much needed project, it's not for a school or varsity but for enhancing my
parents' home.
CHEERS
*******