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Poll Question : Have you totally switched to a 2.4 radio system?
Poll Choice Votes Poll Statistics
622 [ 58.96% ]
433 [ 41.04% ]
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Avatar User Offline CorsairWolf
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Posted: April/01/2010 at 3:39pm  Quote
 
I have a futaba 7cap that I bought last year and I like it, will start switching over recivers as I build more planes. I only have two planes that are still on 72.

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Avatar User Offline groovy67
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Posted: April/02/2010 at 4:01pm  Quote
 

I stiil fly 72mhz from horror stories I have heard and planes that I have seen go down.After hearing all the possible causes of failure it seems that most come to the conclusion that voltage is the main culprit.The other culprit being that the receiver itself was not installed in the proper location as per instructions.

 I will be switching to 2.4ghz as soon as I start my next scale build.Though nothing is bulletproof,I'm sure that this technology will be better than the old way.Hopefully by then all issues will have been worked out and I will have more confidence in them.



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Avatar User Offline M_Callahan
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Posted: April/03/2010 at 1:27am  Quote
 
I made my first flight(s) with a 2.4 gig radio today.

Plane was a TF GS Corsair.  Engine Fuji 50cc EI
Radio was Futaba 7C FAAST
Futaba 3010 servos on all flight control surfaces
(8 3010 servos + 2 standard for throttle and retracts)
Airborne batteries  (2) 4.8v 1900mAh Nicad, redundant set-up

Battery starting voltage (500 ma load) batt A 5.20 v  batt B  5.18 v

All testing and flying was done with both batteries on.

Total flight time of about 45 minutes.  Total radio on time of about
2 hours(range testing, engine adjustments, taxi tests and flying)
Total time off the charger was about 8 hours.

Ending battery voltages (500 ma load) batt A 4.94 v  batt B 4.91 v

I was really expecting to find a dead spot where the engine blocked the signal from the tx.
But I walked a full circle around the plane, about 50 paces out.  Plane on a starting bench
at the same level as the tx.  There was no loss of signal that I could see.  Did same test
with engine running with the same results.  Was going to do the same at the low power setting
but it don't stay in low power mode long enough for me to go all the way round the circle so
I stood at the planes 12 o'clock, 50 paces out, solid contact all the way.

The best thing, at least for me about switching this plane to 2.4 gHz from 72 is that
the electronic ignition on my fuji engine is very noisy(electronicly speaking).  On 72mHz
you could be standing next to the plane with the TX antenna fully extended and the engine
running and the servos would all be moving with no sticks being moved on the TX.  I guess
I'm lucky it did not retract the gear.  I tried all the usual fixes for curing rf interference
problems.  I tried different receivers and even changed channels (38 to 56) with no luck.
Dual conversion, single conversion made no difference.  Now with the 2.4,  no interference
at all.  Miracle might be too strong of a word but today was the first time I was willing to
 put my Corsair up with that engine.

I think I am sold on 2.4 but as they say in the car commercials.....
     "your mileage may vary"

Mike




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Avatar User Offline ghostrider69
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Posted: July/03/2010 at 5:40pm  Quote
 
No question - 2.4 Mhz is save,

what else matters??

P.S.: Did you ever atted an accident or did you have an accident?



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Avatar User Offline legion1967
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Posted: July/19/2010 at 6:21pm  Quote
 

Just read that Horizon (UK) have recalled their AR6250 receiver!  they have received reports of customers loosing RF link ... 'mostly in carbon fibre applications'

 A good while ago i bought 2 of these rx's which failed to bind! they where replaced asap! Now all rx's of this type have to be sent back to Horizon..  I would guess the large demand for 2.4 of all types has affected quality controll at source?  Any USA users having problems with Spektrum/JR 2.4?   C.


 
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Avatar User Offline 50+AirYears
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Posted: July/28/2010 at 4:09pm  Quote
 

Let me try this again.  I lost my reply when I hit the watch post for replies.

I voted no.  I have 2 planes and one transmitter on 2.4, a Park Zone P-51 and Sukhoi Su-26 micro.  I have plenty of others on 27 and 72.  I have had almost no radio related troubles since 1962 except:

2 in-flight battery failures.

one failed switch

one failed crystal socket.

A number of metal-to-metal issues

Three cases of interference from other radios on the freq I was using.

One untraceable sudden loss of range.

Two cases of image interference.

Lost one battery when it fell out during a split S.

Two servo failures.

One Electrolytic capacitor failure in a transmitter.

2 gimbal failures.

One reciever capacitor failure on the ground during taxi.

One reciever failure because of picking up water into the fuse during taxi.

Flyaways because I forgot to rewind escapement rubber.

Lots of dumb-thumbing, even though Im a pincher.

This includes flying with the old Super Regerative recievers.

And, I've seen two cases of swamping because of reflections, once with an old Sampey 404 getting too close to a radio tower around 1964, and more recently at our field, on channel 46 FM only when the operators of a nieghboring land fill left a crane on the property line with the boom up.  No problem on my 46 AM.

Besides, I'm newly retired, and immediately replacing my current equipment with perhaps 2 transmitters an 12 to 15 recievers doesn't make any economic sense.  And to me, computer radios are more work than their worth.


 
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Avatar User Offline Ichy
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Posted: July/29/2010 at 11:53am  Quote
 

Good grief 50+!  How do you remember all that?  I have trouble figuring out what I did yesterday! 

 

I just got me a new 2.4!    Happy so far, but trying to get used to not pulling out the antenna . 

 

 


 
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Avatar User Offline 50+AirYears
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Posted: July/29/2010 at 12:54pm  Quote
 

At my age, I am starting to find that it's easier to remember things from 15years ago than 15 minutes ago.  I guess I might remember most of those because they were so few, and often under memorable situations.  Like losing the battery in the split S was after getting caught up in the Right HAnd/Left Hand landing approach arguement.  My solution was to split S into the landing.  Just being a SA.  And most of of what I might have been tempted to  call interference or radio problems really probably fall under the guise of dumb thumbs.

I haven't had any problem with not having to extend the antenna with the 2.4.  I am more worried about forgetting to extend the antenna on my other radios.  I have caught myself at the flightline with the engine running ready to taxi out and still having the antenna retracted.  It can be very easy to become lazy.


 
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