Radios
10-18-2006 | 06:13 PM
#1
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From: Sherwood, AR
Radios
I've looked through the pages and I couldnt find an answer so I'm going to ask it: Is there anything that needs to be matched up between the transmitter and the reciever? Thanks.
10-18-2006 | 06:18 PM
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From: Poland,
OH
RE: Radios
Yes,
Channel, shift and on some Futaba receiver high or low band.
Futaba and Hitec use negative shift, Airtronics and JR use positive shift. Some recievers are shift selectible or auto shift and can be used with any Transmitter.
Then there is the PPM and PCM stuff to make things even more confusing.
Channel, shift and on some Futaba receiver high or low band.
Futaba and Hitec use negative shift, Airtronics and JR use positive shift. Some recievers are shift selectible or auto shift and can be used with any Transmitter.
Then there is the PPM and PCM stuff to make things even more confusing.
10-18-2006 | 06:24 PM
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From: richmondbc, CANADA
RE: Radios
I am not sure what you mean by your question, but just for your info
Your Crystal should be of the same channel in both your receiver and transmitter.
Also if your radio is set on PCM make sure your receiver is pcm compatable and not FM otherwise not it will not work.
Ellaborate more on your question.
zain
Your Crystal should be of the same channel in both your receiver and transmitter.
Also if your radio is set on PCM make sure your receiver is pcm compatable and not FM otherwise not it will not work.
Ellaborate more on your question.
zain
10-18-2006 | 07:06 PM
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From: Sherwood, AR
RE: Radios
Hmm I'm basically saying that I don't know anything about channels or mhz or if you have to have certain channels or mhz on your transmitter and reciever to communicate. Thanks again.
10-18-2006 | 10:39 PM
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From: Sherwood, AR
RE: Radios
Ummmmm....Hello? Is there anything that needs to be the same to make the transmitter and reciever to communicate? <--- more understandable version (I hope)
10-18-2006 | 11:05 PM
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From: Corona, CA
RE: Radios
ORIGINAL: ShakeandBake
Ummmmm....Hello? Is there anything that needs to be the same to make the transmitter and reciever to communicate? <--- more understandable version (I hope)
Ummmmm....Hello? Is there anything that needs to be the same to make the transmitter and reciever to communicate? <--- more understandable version (I hope)
Yeah, that'll get you lots of help. Try yelling next time.
10-19-2006 | 01:03 AM
#10
My Feedback: (13)
RE: Radios
your still not too clear, hope this helps,typically you want a matched receiver,example futaba radio/futaba receiver, also the receiver needs a christal to match the freq. of the transmitter the receiver christal can be changed relatively easy the transmitter not so you have to send it to the factory to have it done.
some brands will work with others but mostly you want to stick to one brand.
there are several transmitters that you can program, for flying multiple planes using one radio (one at a time of course) all you need to get is a flight pack for each plane your using, a flight pack has battery, receiver,and 4 servos,you can add more if needed mixing brands will work sometimes, your better off with sticking with one brand though. your question didn't have much info I was making a assumption. if you go into more detail I am sure you will find there is plenty of help out there in RCU land.
some brands will work with others but mostly you want to stick to one brand.
there are several transmitters that you can program, for flying multiple planes using one radio (one at a time of course) all you need to get is a flight pack for each plane your using, a flight pack has battery, receiver,and 4 servos,you can add more if needed mixing brands will work sometimes, your better off with sticking with one brand though. your question didn't have much info I was making a assumption. if you go into more detail I am sure you will find there is plenty of help out there in RCU land.
10-19-2006 | 01:04 AM
#11
My Feedback: (5)
RE: Radios
Hey Shake. Mind if I call you Shake? Well, too bad. Anyway, as far as getting a radio setup, your best bet I think is to buy a 'set'. This includes the transmitter, matching receiver, servos, batteries, and some other accessories. This way, you don't need to worry about whether the pieces will work together. Here are some examples:
http://www2.towerhobbies.com/cgi-bin...&I=LXEFJ4**&P=
http://www2.towerhobbies.com/cgi-bin...&I=LXKJD8**&P=
http://www2.towerhobbies.com/cgi-bin...&I=LXHYK7**&P=
There are countless other examples of course, but when you're just starting out you don't need anything too complicated.
Now, if you already have a transmitter or a receiver and want to get the other part to match, that will require a little more research. I would start by looking at equipment from the same manufacturer. Then look at the kind of signal it uses (AM, FM, PCM, etc.) Then start looking for the number of channels (or functions) that you need to control. (A standard trainer type airplane uses four: Ailerons, Elevator, Rudder, and Throttle).
Hope this is helpful...
http://www2.towerhobbies.com/cgi-bin...&I=LXEFJ4**&P=
http://www2.towerhobbies.com/cgi-bin...&I=LXKJD8**&P=
http://www2.towerhobbies.com/cgi-bin...&I=LXHYK7**&P=
There are countless other examples of course, but when you're just starting out you don't need anything too complicated.
Now, if you already have a transmitter or a receiver and want to get the other part to match, that will require a little more research. I would start by looking at equipment from the same manufacturer. Then look at the kind of signal it uses (AM, FM, PCM, etc.) Then start looking for the number of channels (or functions) that you need to control. (A standard trainer type airplane uses four: Ailerons, Elevator, Rudder, and Throttle).
Hope this is helpful...
10-19-2006 | 01:11 PM
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From: San Jose, CA
RE: Radios
ORIGINAL: bigtim
all you need to get is a flight pack for each plane your using, a flight pack has battery, receiver,and 4 servos.
all you need to get is a flight pack for each plane your using, a flight pack has battery, receiver,and 4 servos.
10-19-2006 | 02:08 PM
#14
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RE: Radios
ORIGINAL: JPGale
I have to say looking on the Tower site, that a futaba flight pack will cost 112.99 with out the crystal (which cost 12.99), so I am simply going to buy the 4 channel futaba radio that has the same receiver that came with my 6 channel futaba, includes the crystal and only costs 119.99, and it includes a spare charger so I can charge the 2 batteries at the same time, and I can use the transmitter battery as a spare for my 6 channel transmitter, I can not see the point of a flight pack when it cost more to get the same personally, although this is a bit OT
ORIGINAL: bigtim
all you need to get is a flight pack for each plane your using, a flight pack has battery, receiver,and 4 servos.
all you need to get is a flight pack for each plane your using, a flight pack has battery, receiver,and 4 servos.
Ken
10-19-2006 | 03:53 PM
#15
RE: Radios
Make sure that if you are buying the radio set to fly rc airplanes you need to make sure that any radio set you buy is for aircraft use. This is using frequincies in the 72 mhz band. there are losts of channels in this band so that more than one pilot can each have their own channel while flying so as not to interfere with each others planes. You just have to make sure that both the transmitter and reciever are on the same channel ie. channel 52. [8D]
10-19-2006 | 07:58 PM
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From: Hamilton,
ON, CANADA
RE: Radios
just be careful when you ask a question there are so many replies ity can become confusing fast 
,so let me add something that may help if you dont under stand.
1. you need 2 crystals 1 for your reciever, channel 11 to 35 or so. is low band 35 or so and up is high band. with your reciever you can actually change the crysatl (as long as its the same band)
2. you need a different kind of crystal for your transmitter. you can't change to a different crystal with the transmitter. but you can chnge it to replace it if its faulty. (reciever and transmitter channels must be the same).
3.shift There is a positive shift and a negitive shift. (futaba and Hitec is one shift and Airtronics and JR is another) (you can mix match these (if you want) to have an airtronics or JR reciever or transmitter, or you can have a futaba or hitec reciver or transmitter).
Dave trimmer
,so let me add something that may help if you dont under stand.1. you need 2 crystals 1 for your reciever, channel 11 to 35 or so. is low band 35 or so and up is high band. with your reciever you can actually change the crysatl (as long as its the same band)
2. you need a different kind of crystal for your transmitter. you can't change to a different crystal with the transmitter. but you can chnge it to replace it if its faulty. (reciever and transmitter channels must be the same).
3.shift There is a positive shift and a negitive shift. (futaba and Hitec is one shift and Airtronics and JR is another) (you can mix match these (if you want) to have an airtronics or JR reciever or transmitter, or you can have a futaba or hitec reciver or transmitter).
Dave trimmer
10-19-2006 | 11:30 PM
#18
My Feedback: (13)
RE: Radios
wow! that statement was taken totally out of context read the entire post fellas. if you have a transmitter that can be programmed for 6 planes why would you want a bunch of extra transmitters laying arround.
if they are diff. channels then you can not use them with your programable radio.
if they are the same freq then why have a bunch of transmitters in your car to get confused with.better get your labeler ready.
each one serves a individual plane they have slightly different clibrations and need to be set up for a individual plane thats why radios have multi model memory to set each plane up individually on there own set up #.
secondly transmitters that have multi model memory are computer radios , and are far better than your basic 4ch sky sport radio again why buy a basic reciever when most flight pcks come with 7 or 8 ch recievers not 4ch and can be used for advanced models if needed.
dave you live in Canada mabee you guys in the great white north can change your freq. christals but in the U.S.A. it is illegal to do so, you have to send your transmitter in for freq. change and recalibration at the factory this is the law for a good reason.
my post was for the questioner and to provide some information to vague and non specific question from his post it sounded like he had a transmitter and needed a reciever or vise versa.
if they are diff. channels then you can not use them with your programable radio.
if they are the same freq then why have a bunch of transmitters in your car to get confused with.better get your labeler ready.
each one serves a individual plane they have slightly different clibrations and need to be set up for a individual plane thats why radios have multi model memory to set each plane up individually on there own set up #.
secondly transmitters that have multi model memory are computer radios , and are far better than your basic 4ch sky sport radio again why buy a basic reciever when most flight pcks come with 7 or 8 ch recievers not 4ch and can be used for advanced models if needed.
dave you live in Canada mabee you guys in the great white north can change your freq. christals but in the U.S.A. it is illegal to do so, you have to send your transmitter in for freq. change and recalibration at the factory this is the law for a good reason.
my post was for the questioner and to provide some information to vague and non specific question from his post it sounded like he had a transmitter and needed a reciever or vise versa.
10-20-2006 | 07:13 AM
#19
RE: Radios
ORIGINAL: Dave trimmer
you can't change to a different crystal with the transmitter. but you can change it to replace it if its faulty.
you can't change to a different crystal with the transmitter. but you can change it to replace it if its faulty.
I've never heard of a TX crystal becoming defective in an RC set. Have you? Most crystal damage is due to crashes and not many TX's crash.
10-20-2006 | 08:54 AM
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From: Callahan,
FL
RE: Radios
The FCC does allow you to change crystals on your transmitter. The stipulation is, if you change the crystal, you must have the transmitter retuned and recertified by an authorized repair facility(FCC licensed). Receivers are center tuned to the 72mHz band so any crystal will work and be close enough. Transmitters are discreetly tuned to the specific frequency of the particular channel. Crystals are only an approximate of the desired frequency and the electronics within the transmitter or receiver are what tune the equipment to the specific frequency/channel. Changing the crystal on a transmitter will effectively detune the transmitter and move it off frequency, possibly enough to affect your or other's receivers. Change the crystal in your receiver and you are only affecting yourself, change the frequency in your transmitter and you may be affecting others.
But, all this notwithstanding, it is illegal, so don't do it.
Regards,
doubledee
But, all this notwithstanding, it is illegal, so don't do it.
Regards,
doubledee
10-20-2006 | 02:26 PM
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From: San Jose, CA
RE: Radios
ORIGINAL: bigtim
wow! that statement was taken totally out of context read the entire post fellas. if you have a transmitter that can be programmed for 6 planes why would you want a bunch of extra transmitters laying arround.
if they are diff. channels then you can not use them with your programable radio.
if they are the same freq then why have a bunch of transmitters in your car to get confused with.better get your labeler ready.
each one serves a individual plane they have slightly different clibrations and need to be set up for a individual plane thats why radios have multi model memory to set each plane up individually on there own set up #.
secondly transmitters that have multi model memory are computer radios , and are far better than your basic 4ch sky sport radio again why buy a basic reciever when most flight pcks come with 7 or 8 ch recievers not 4ch and can be used for advanced models if needed.
dave you live in Canada mabee you guys in the great white north can change your freq. christals but in the U.S.A. it is illegal to do so, you have to send your transmitter in for freq. change and recalibration at the factory this is the law for a good reason.
my post was for the questioner and to provide some information to vague and non specific question from his post it sounded like he had a transmitter and needed a reciever or vise versa.
wow! that statement was taken totally out of context read the entire post fellas. if you have a transmitter that can be programmed for 6 planes why would you want a bunch of extra transmitters laying arround.
if they are diff. channels then you can not use them with your programable radio.
if they are the same freq then why have a bunch of transmitters in your car to get confused with.better get your labeler ready.
each one serves a individual plane they have slightly different clibrations and need to be set up for a individual plane thats why radios have multi model memory to set each plane up individually on there own set up #.
secondly transmitters that have multi model memory are computer radios , and are far better than your basic 4ch sky sport radio again why buy a basic reciever when most flight pcks come with 7 or 8 ch recievers not 4ch and can be used for advanced models if needed.
dave you live in Canada mabee you guys in the great white north can change your freq. christals but in the U.S.A. it is illegal to do so, you have to send your transmitter in for freq. change and recalibration at the factory this is the law for a good reason.
my post was for the questioner and to provide some information to vague and non specific question from his post it sounded like he had a transmitter and needed a reciever or vise versa.
To sum it up to get that same things for both systems from Tower would cost (I check the price has gone up might be a glitch but it was 7 bucks cheaper)
Flight pack 119.99 (includes RX battery) Crystal 12.99, Wall charger 16.99 spare TX battery 22.99 Total 172.96
4Channel radio pack 119.99 Total 119.99
That is a difference of 52.97 to get like for like.
As I said orginally this is a little off topic for this thread maybe we should split it.
J
10-20-2006 | 05:42 PM
#22
My Feedback: (13)
RE: Radios
a full radio set and flight pack with a 4 ch receiver with no expansion capabilities is what you get, that was my point.
if you already have a comp. radio then do you need a charger and a inferior reciever? to each his own of course.
for me it works buying a flight pack for each plane with a 7 or 8 ch reciever.
most of my planes require at least 5 to 7 servos. 4 don,t get it done except for my trainer which has not been flown for a while, all my other planes require more channels than 4 . I have 2 chargers and rarely do I need to use more than one at a time.
this subject was beaten to death 2 months ago on another thread
if you already have a comp. radio then do you need a charger and a inferior reciever? to each his own of course.
for me it works buying a flight pack for each plane with a 7 or 8 ch reciever.
most of my planes require at least 5 to 7 servos. 4 don,t get it done except for my trainer which has not been flown for a while, all my other planes require more channels than 4 . I have 2 chargers and rarely do I need to use more than one at a time.
this subject was beaten to death 2 months ago on another thread
10-20-2006 | 06:37 PM
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From: San Jose, CA
RE: Radios
ORIGINAL: bigtim
a full radio set and flight pack with a 4 ch receiver with no expansion capabilities is what you get, that was my point.
if you already have a comp. radio then do you need a charger and a inferior reciever? to each his own of course.
for me it works buying a flight pack for each plane with a 7 or 8 ch reciever.
most of my planes require at least 5 to 7 servos. 4 don,t get it done except for my trainer which has not been flown for a while, all my other planes require more channels than 4 . I have 2 chargers and rarely do I need to use more than one at a time.
this subject was beaten to death 2 months ago on another thread
a full radio set and flight pack with a 4 ch receiver with no expansion capabilities is what you get, that was my point.
if you already have a comp. radio then do you need a charger and a inferior reciever? to each his own of course.
for me it works buying a flight pack for each plane with a 7 or 8 ch reciever.
most of my planes require at least 5 to 7 servos. 4 don,t get it done except for my trainer which has not been flown for a while, all my other planes require more channels than 4 . I have 2 chargers and rarely do I need to use more than one at a time.
this subject was beaten to death 2 months ago on another thread
I am not trying to tell other people what to do, but I was trying to give information, this is just a place to give information it is upto the readers to decide which to follow if any.
Now I think we have done this one to death.
J
10-20-2006 | 07:01 PM
#25
My Feedback: (13)
RE: Radios
cheaper than a 99$ flight pack for sure, guess I will have to buy a sky sport after all and part it out.
call me a cannibal , still 20$ more but for a new tx battery and the extra dust collector(charger) guess thats where I will have to go .always looking to save $guess I should have checked prices every time I go to tower I spend more $$
call me a cannibal , still 20$ more but for a new tx battery and the extra dust collector(charger) guess thats where I will have to go .always looking to save $guess I should have checked prices every time I go to tower I spend more $$
