Testing Receiver
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Testing Receiver
I was given a box of "stuff". In this box was a Circus Hobbies(i think, don't have it in front of me) receiver by jr. It said hi-band, so I tried to test it out with a 60 crystal. I couldn't get anything to work. Is there a method for testing to see if it is bad, other than what I've done? Did I use the wrong crystal?
Thanks for the help,
Darrin
Thanks for the help,
Darrin
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RE: Testing Receiver
I'm pretty sure it's FM. It had a 72.630 crystal in it. That is channel 42 if I looked it up correctly. Any other ideas, or am I just out of luck?
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RE: Testing Receiver
I think it still could be AM.
I know I may be corrected on this, but I think the frequencies are the same for 72 mhz in AM and FM. The difference is the type of modulation. I'm thinking you have a RX on 72mhz channel 42 AM. Both AM and FM frequencies are reserved for RC use within a specified range of the 72mhz band.
If it turns out to be an AM rx, you can still use it, but I wouldn't if it were mine. I have some AM stuff, but I don't know why I keep it.
I know I may be corrected on this, but I think the frequencies are the same for 72 mhz in AM and FM. The difference is the type of modulation. I'm thinking you have a RX on 72mhz channel 42 AM. Both AM and FM frequencies are reserved for RC use within a specified range of the 72mhz band.
If it turns out to be an AM rx, you can still use it, but I wouldn't if it were mine. I have some AM stuff, but I don't know why I keep it.
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RE: Testing Receiver
Why not use the Am, I've(and 1000's of others) have used it for years. It actual works quite well. I dosn't have the interference that you maybe thinking of, like your car radio when you drive under a bridge. Just because its AM doesn't make it bad.
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RE: Testing Receiver
You're right about AM being usable and legal and just plain fine. I don't use it because all, (both), of my computer radios are FM/PCM only I still have an analog AM tx that works fine, (got it in college for my Gentle Lady, RIP). I just think that someone who is beginning the hobby would be better-off going with something that can be used with newer, more common radio equipment.
Darrin,
This information would have been more useful in your first response:
"it's FM says it right on the label, I just looked at it. I've tried it numerous times. I guess it's just bad. "
Good Luck!!
Darrin,
This information would have been more useful in your first response:
"it's FM says it right on the label, I just looked at it. I've tried it numerous times. I guess it's just bad. "
Good Luck!!
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RE: Testing Receiver
ORIGINAL: DarrinD
it's FM says it right on the label, I just looked at it. I've tried it numerous times. I guess it's just bad.
it's FM says it right on the label, I just looked at it. I've tried it numerous times. I guess it's just bad.
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RE: Testing Receiver
I would've put that info in if I had the receiver in front of me at the time. Sorry about that.
I'm using a jr 6102 to test, and i've tried PCM, PPM. I don't know of any other way to test it. No big deal, I'll just get another one, I was just trying to use the stuff in a trainer I was setting up to teach my neices to fly.
I'm using a jr 6102 to test, and i've tried PCM, PPM. I don't know of any other way to test it. No big deal, I'll just get another one, I was just trying to use the stuff in a trainer I was setting up to teach my neices to fly.
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RE: Testing Receiver
Yup Darrin...at this point I wouldn't risk it even if I could find a way to make it work. Hitec makes some low-cost shift selectable receivers. Get an 8 channel or more and your nieces can use it forever in different planes.
Good luck!!
Good luck!!