RCCrawler Forums

sllimj · 03-19-2005, 08:58 PM

I was told that in order to swap my crystals from an air freq to land that I have to send it in to be tuned? any help on this............

the unit is a Futaba skyport

SPEED_RACER · 03-20-2005, 02:48 AM

best thing to do is email futaba and ask if this is available for that radio and rx .it's not a tuning thats needed,it needs the frequency to be changed to a ground frequency

sllimj · 03-20-2005, 09:30 AM

the radio and reciever both have removable crystals, I don't understand what would else would be needed.....

fuzzhead · 03-20-2005, 09:57 AM

well for most ground radios the frequencies are either 27 mhz or 75 mhz. and the air ones are a bit different i think. i dont know much about planes.

SPEED_RACER · 03-20-2005, 01:30 PM

a lesson is needed

what controlls what frequency of say 27mhz or 75mhz or any other frequency isn't the crystal.it's the module on some hi-end radios and on the others it's internal and would need internal parts on the curcuit board to change the mzh frequency.
all the crystall's do is change a certain channel in that particular mzh range.in other words you can't take a setof crystals from a 27 mhz radio and put it in a 75 mhz radio or any other for that matter.crystals need to be on it's own frequincy with the radio and rx to work.
i'm sure some one can give a much better explaination of this then me.

sllimj · 03-20-2005, 07:45 PM

so it is something like this....... the radio is hardwired for either 72 or 75 on a broad
scale and the crystals control the narrow side within that....... Maybe?

all I got to say is that in my own backyard, with the mast down.....'nuf said'

thanks for the life lesson:'do my homework,buy the right stuff the first tme, and K.I.S.S. '

03-19-2005, 08:58 PM	#1
sllimj Newbie Join Date: Mar 2005 Location: . Posts: 31	reciever....air to land I was told that in order to swap my crystals from an air freq to land that I have to send it in to be tuned? any help on this............ the unit is a Futaba skyport

03-20-2005, 02:48 AM	#2
SPEED_RACER Quarry Creeper Join Date: Nov 2004 Location: MANVILLE Posts: 413	best thing to do is email futaba and ask if this is available for that radio and rx .it's not a tuning thats needed,it needs the frequency to be changed to a ground frequency

03-20-2005, 09:30 AM	#3
sllimj Newbie Join Date: Mar 2005 Location: . Posts: 31	the radio and reciever both have removable crystals, I don't understand what would else would be needed.....

03-20-2005, 09:57 AM	#4
fuzzhead Rock Crawler Join Date: Dec 2004 Location: Grand Forks, ND Posts: 620	well for most ground radios the frequencies are either 27 mhz or 75 mhz. and the air ones are a bit different i think. i dont know much about planes.

03-20-2005, 01:30 PM	#5
SPEED_RACER Quarry Creeper Join Date: Nov 2004 Location: MANVILLE Posts: 413	a lesson is needed what controlls what frequency of say 27mhz or 75mhz or any other frequency isn't the crystal.it's the module on some hi-end radios and on the others it's internal and would need internal parts on the curcuit board to change the mzh frequency. all the crystall's do is change a certain channel in that particular mzh range.in other words you can't take a setof crystals from a 27 mhz radio and put it in a 75 mhz radio or any other for that matter.crystals need to be on it's own frequincy with the radio and rx to work. i'm sure some one can give a much better explaination of this then me.

03-20-2005, 07:45 PM	#6
sllimj Newbie Join Date: Mar 2005 Location: . Posts: 31	so it is something like this....... the radio is hardwired for either 72 or 75 on a broad scale and the crystals control the narrow side within that....... Maybe? all I got to say is that in my own backyard, with the mast down.....'nuf said' thanks for the life lesson:'do my homework,buy the right stuff the first tme, and K.I.S.S. '

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Thread: reciever....air to land