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Old 04-06-2007, 01:57 PM   #1
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Default 27mhz FM Radio help

I got a 27mhz FM JR Propo XS3 which is the asia version of the JR Racing xs3.
Instead of the 6 FM channel 1-6, I got 12 channel.
I know that:
Channel 1 26.995 Brown
Channel 2 27.045 Red
Channel 3 27.095 Orange
Channel 4 27.145 Yellow
Channel 5 27.195 Green
Channel 6 27.255 Blue

But what about the other 7-12 channel?
I just bought a FM 27mhz receiver (LRP Phaser) which need crystal, just wondering which channel I have to get?
Do I need to get JR Brand or any brand crystal would work?

For some reason, I found a XS3 in an HK ebay store, and their list of 27mhz frequencies is :
Frequency: FM 27MHz
26.965, 26.975, 26.985, 26.995, 27.005, 27.015, 27.025, 27.035, 27.045, 27.055, 27.065, 27.075
Assuming from channel 1-12



I borrowed my friend's crystal 27.465mhz Central Brand.
I have no idea which channel it is.

Need help
thanks!
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Old 04-06-2007, 03:33 PM   #2
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Here you go. http://www.rctek.com/radio/rc_model_...equencies.htmlyou can use any manufacturers crystals for 27Mhz
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Old 04-06-2007, 05:18 PM   #3
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In North America; we have CH1-6 but those are actually channel 2, 4,6,8,10,12 in Asia! That means we are only using their even number channels. Your channel 12 is actually ch6 (27.255?) If you ever go to Japan, you can get the 1,3,5,7,9,11 which are going to be the "in between our channels" frequencies. A fellow racer had some of those for his KO a long time ago when he got pissed with frequency conflicts cause here we only have 6 channels on 27band.
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Old 04-06-2007, 08:36 PM   #4
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So my radio is following the UK frequency?
Num Frequency Colour
1 26.965 N/A
2 26.975 Grey/Brown
3 26.985 N/A
4 26.995 Brown
5 27.005 N/A
6 27.015 N/A
7 27.025 Red/Brown
8 27.035 N/A
9 27.045 Red
10 27.055 N/A
11 27.065 N/A
12 27.075 Red/Orange


But compare to the US frequency
UK: US:
ch4 26.995 Brown = ch1 26.995 Brown
ch9 27.045 Red = ch2 27.045 Red


Only those 2 are the same?
or I follow what TEM said without comparing the frequencies mhz #?
That Even # = US ch1-6
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Old 04-06-2007, 10:16 PM   #5
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I think your list is wrong! You have nothing on 27.1XX nor 27.2XX
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Old 04-06-2007, 11:05 PM   #6
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http://www.rctek.com/radio/rc_model_...encies_uk.html

^
I use that link minicooper posted
it has 32 numbers!!??


So any crystal with the correct frequency would work?
even futaba ones?
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Old 04-09-2007, 06:52 PM   #7
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For Japan
Chan 01 26.975MHz
Chan 02 26.995MHz
Chan 03 27.025MHz
Chan 04 27.045MHz
Chan 05 27.075MHz
Chan 06 27.095MHz
Chan 07 27.125MHz
Chan 08 27 145MHz
Chan 09 27.175MHz
Chan 10 27.195Mhz
Chan 11 27.225MHz
Chan 12 27.255MHz
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Old 04-11-2007, 08:25 PM   #8
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Quote:
Originally Posted by ah_DaN
So any crystal with the correct frequency would work?
even futaba ones?
Yes, even futaba. It's not like 75Mhz where there is a positive or negative shift.
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Old 04-11-2007, 08:56 PM   #9
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cool thx!
got myself some crystals
its all working now.
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