Best Range DX7 or FUTABA 72mhz FM? - RC Groups
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Mar 25, 2012, 03:41 PM
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Best Range DX7 or FUTABA 72mhz FM?

Can someone tell me which radio will have the best range for a powered EPP glider ? I have long range RX's for both.
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Mar 25, 2012, 05:47 PM
LSF303-AMA Fellow
tkallev's Avatar
Both radios will keep their link much farther than you can keep the model in sight.
Mar 25, 2012, 10:33 PM
Registered User

tkallev is absolutely correct.

I got to lab-test some first-class 72mHz transmitter/receivers a few years ago. They worked generally out to almost exactly a nautical mile, which is much, much further than you can see to control a typical RC sailplane.

Yours, Greg
Mar 30, 2012, 06:14 PM
Rocky Mountain High and Higher
PROACE's Avatar
How about 72MHZ compared to 2.4GHZ?? I have both and like both
Mar 30, 2012, 10:50 PM
Registered User
same answer....even the ancient AM sets worked farther than you could see....the advantage of 2.4 GHZ isn't range, it's interference rejection.
Mar 31, 2012, 11:51 AM
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kilwein's Avatar
Using calibrated test equipment, 20GHz scope, 26GHz, EMI chamber, both horn and conical antennas along with field tests, my 14MZ fasst (14 & 8 channel RX's) get 8k+ft , my 9ZHPS SYN 72MHz 9 channels, 11K+. Some of this was done with the equipment connected inside the RX to actually see the signal-levels. MY comfort level to see-fly the model is ~2700ft. Either one is good but the 2.4 fasst has freq switching advantage for interference as mentioned above.
Apr 01, 2012, 04:59 AM
Proud member of LISF and ESL
One point to remember is that the receiver is typically the limiting factor. Some are longer range than others. However most makers will not state a range other than to say "parkflyer", "indoor" or "full range". These terms have no numerical standard, but if you want range make sure you are flying a "full range" receiver.
Apr 01, 2012, 11:56 PM
Registered User
ozmo01's Avatar
Hard to add any usefull reply to the good info here. For me personally more range equals new glasses. I crashed a Radian last fall and found it 1.3 miles measured on Google earth.
WE (always ask for help to crash ;-) ) had it breifly at times but could not over come the winds that came up aloft and it got OOS. Likely gave some golfers a bit of excitement though!
Apr 02, 2012, 02:18 AM
Rocky Mountain High and Higher
PROACE's Avatar
Apr 11, 2012, 08:38 AM
Registered User
Futaba 72MHz is much much more reliable
You never know when spektrum will let you down.
I know from experience. I have seen and I had lockout at 200ft.

72MHz may glitch but will let you know if sometyhing is wrong
Spektrum, everything goes well until the end.

Frequency hopping is good but 2.4GHz is where all wifi systems operate and is goes much less further that 72Mhz for the same radio power
72MHz is almost exclusively for modelers, so not too much noise from other uses.

Both radio, when working, will fly you further that you can see.

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