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Model Forum / Radio Controlled / Helicopters / March 2008Crystal's
Could someone please tell me if I had two sets of crystals on say channel 66, would the one transmitter crystal work on two models without problem. i.e. the crystal sets aren't marched any other way. Just to save swapping crystals all the time. Should say matched > Could someone please tell me if I had two sets of crystals on say channel > 66, would the one transmitter crystal work on two models without problem. > i.e. the crystal sets aren't marched any other way. Just to save swapping > crystals all the time. I'm trying to run my cp pro with a Jr 8103. I replaced the e-flit reciever with a pos shift jr 610. I have my e-flite 72 Mhz crystal installed in it, but the heli doesn't respond at all. I was told i might be the crystals. Does anyone know the reason these crystals won work, and which ones I need -- chiprace > I'm trying to run my cp pro with a Jr 8103. I replaced the e-flite > reciever with a pos shift jr 610. I have my e-flite 72 Mhz crystals > installed in it, but the heli doesn't respond at all. I was told it > might be the crystals. Does anyone know the reason these crystals wont > work, and which ones I need? A standard JR crystal I should imagine  SignatureKevin R Reply address works >> I'm trying to run my cp pro with a Jr 8103. I replaced the e-flite >> reciever with a pos shift jr 610. I have my e-flite 72 Mhz crystals [quoted text clipped - 3 lines] >> > A standard JR crystal I should imagine And your imagination would prove to be 100% spot on too. SignatureBeav VN 750 Zed 1000 OMF# 19 > I'm trying to run my cp pro with a Jr 8103. I replaced the e-flite > reciever with a pos shift jr 610. I have my e-flite 72 Mhz crystals > installed in it, but the heli doesn't respond at all. I was told it > might be the crystals. Does anyone know the reason these crystals wont > work, Because they're different. > and which ones I need? I'm going to let you try to work that one out for yourself. SignatureBeav VN 750 Zed 1000 OMF# 19 | I'm trying to run my cp pro with a Jr 8103. I replaced the e-flite | reciever with a pos shift jr 610. I have my e-flite 72 Mhz crystals | installed in it, but the heli doesn't respond at all. I was told it | might be the crystals. Does anyone know the reason these crystals wont | work Probably because most JR RXs are single conversion, and most E-Flight RXs are dual conversion. The crystals for the two have very different values even for the same channel. SignatureDoug McLaren, dougmc@frenzied.us `It's overkill, of course. But you can never have too much overkill.'-Anonymous >Probably because most JR RXs are single conversion, and most E-Flight >RXs are dual conversion. The crystals for the two have very different >values even for the same channel. E-Flite Rx on my CP's 4-in-1 is definitely single conversion. I stuffed in a Futaba single conversion crystal and got it talking to my 9C a long time ago. Yes, the transmitter should work with any receiver that has a crystal on the same channel. Transmitter and receiver crystals are identified to work on a specific channel but are not matched as such. I use one transmitter for 10 or more different models each with their own receiver and crystal. Regards Peter > Could someone please tell me if I had two sets of crystals on say channel > 66, would the one transmitter crystal work on two models without problem. > i.e. the crystal sets aren't marched any other way. Just to save swapping > crystals all the time. Thanks for that Peter > Yes, the transmitter should work with any receiver that has a crystal on > the same channel. Transmitter and receiver crystals are identified to work [quoted text clipped - 7 lines] >> i.e. the crystal sets aren't marched any other way. Just to save swapping >> crystals all the time. I'm thinking of buying 2 new receivers. they are dual conversion. they will be in 2 different planes. so I know they have to be on different channels if they are on the field together. my problem is I see dual conversion RX crystals for sale but I only see single conversion TX crystals. does this mean all TX are single and will work with duel conversion RX crystals. the reciever https://www.unitedhobbies.com/UNITEDHOBBIES/store/uh_viewItem.asp?idProduct=3828 the RX crystals https://www.unitedhobbies.com/UNITEDHOBBIES/store/uh_viewItem.asp?idProduct=5056 TX crystals https://www.unitedhobbies.com/UNITEDHOBBIES/store/uh_viewItem.asp?idProduct=3921 transmitters are fm futaba conquest fp-t4nbf. thanks for the help in advance. you looked like you knew what you were talking about. >Yes, the transmitter should work with any receiver that has a crystal on the >same channel. Transmitter and receiver crystals are identified to work on a [quoted text clipped - 7 lines] >> i.e. the crystal sets aren't marched any other way. Just to save swapping >> crystals all the time. Except that Channel 66 (in the USA) is a surface frequency at 75.51Mhz - not aircraft! ------------------------------------------------------------------------------------------ > Could someone please tell me if I had two sets of crystals on say channel > 66, would the one transmitter crystal work on two models without problem. > i.e. the crystal sets aren't marched any other way. Just to save swapping > crystals all the time. > Except that Channel 66 (in the USA) is a surface frequency at > 75.51Mhz - not aircraft! So it's lucky he's not in the USA! In the UK channel 66 is an aircraft frequency, 35.060Mhz SignatureJohn P. - who flies on Epsom Downs, UK. http://www.flyrc.org.uk/ I'm sick of spam, so replace 'nojunkthanks' with 'john' if you want me to read any e-mailed reply! R A Wrote: > Could someone please tell me if I had two sets of crystals on sa > channel [quoted text clipped - 3 lines] > swapping > crystals all the time. Hey RA, Funny thing happened to me Sunday at the flying field. I have my Futab set up as my heli radio on US channel 21, and a JR set up as my fixe wing radio US channel 21. I figure I'll never fly a heli and a airplane at the same time right? So Isaac gets to the field and I le him fly my heli (E-Flite Blade). I watch a little while, then start t prep my trainer...yep! turned on my JR and promptly shot down my ow heli!!! No damage except to my ego! Davi -- tiol >R A Wrote: >> Could someone please tell me if I had two sets of crystals on say [quoted text clipped - 16 lines] > >No damage except to my ego! hahaha.. I hate when I do stuff like that... There's not enough "duh" in the work "duh" to describe that feeling... :) |
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