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Old Oct 24, 2009, 03:21 PM
Skywise
Guest
n/a Posts
Looking for radio reviews/comparisons

I lost my easyglider today. I was going for a little more altitude
than I have in the past and apparently lost radio contact. I almost
brought it back but it finally went straight down really fast and
toasted everything. Complete loss except for the two wing mounted
servos.

Why do I suspect the radio? Because in searching the net a bit
today I find that the Spektrum 6100e receiver I had is considered
a park flyer receiver, and apparently that doesn't just mean size,
it can also mean receive range. Live and learn.

I'll still use the DX6i with the Blade 400 heli it came with. I
don't even get past 50 feet away with that. But I want something
better for the next plane.

Anyway, I am looking for web sites that compare and review radio
systems. I'd also like to find real world range tests. Currently
I'm looking at either a Spektrum or Futaba 7ch 2.4ghz system,
leaning towards Futaba at the moment provided I find info that
the zero id problem has been nixed. I'm also open to other brands.

TIA

Brian
--
http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism
Seismic FAQ: http://www.skywise711.com/SeismicFAQ/SeismicFAQ.html
Quake "predictions": http://www.skywise711.com/quakes/EQDB/index.html
Sed quis custodiet ipsos Custodes?
Old Oct 24, 2009, 05:31 PM
Vance Howard
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

On 2009-10-24, Skywise <into@oblivion.nothing.com> wrote:
> I lost my easyglider today. I was going for a little more altitude
> than I have in the past and apparently lost radio contact. I almost
> brought it back but it finally went straight down really fast and
> toasted everything. Complete loss except for the two wing mounted
> servos.
>
> Why do I suspect the radio? Because in searching the net a bit
> today I find that the Spektrum 6100e receiver I had is considered
> a park flyer receiver, and apparently that doesn't just mean size,
> it can also mean receive range. Live and learn.
>
> I'll still use the DX6i with the Blade 400 heli it came with. I
> don't even get past 50 feet away with that. But I want something
> better for the next plane.
>
> Anyway, I am looking for web sites that compare and review radio
> systems. I'd also like to find real world range tests. Currently
> I'm looking at either a Spektrum or Futaba 7ch 2.4ghz system,
> leaning towards Futaba at the moment provided I find info that
> the zero id problem has been nixed. I'm also open to other brands.
>
> TIA
>
> Brian


Hi,
Why not just keep using the Spektrum DX6i? You can get full range
Spektrum rx's that will work with it. The range isn't a limitation of
your transmitter. True, the DX6 was a park flyer radio, but the DX6i is
full range.
Old Oct 24, 2009, 07:05 PM
Skywise
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

Vance Howard <Vance@example.invalid> wrote in news:hbvv8e$sp7$1@news.eternal-
september.org:

> Hi,
> Why not just keep using the Spektrum DX6i? You can get full range
> Spektrum rx's that will work with it. The range isn't a limitation of
> your transmitter. True, the DX6 was a park flyer radio, but the DX6i is
> full range.


Well, I'm getting the impression that the frequency hopping method of
the Futaba radios is more robust than the dual fixed frequencies of
the Spektrum system. I do realize both are different forms of spread
spectrum.

What I'm kinda hoping for (but not really expecting) is some technical
discussion of the systems as it applies to RC. I have a background in
electronics so I know the theory. But theory and reality are often
different, so I'm more interested in the reality of the radios.

I have found typical product reviews of these radios which are nice
and do provide some information, but they don't get more technical
than regurgitating the manufacturer provided specs.

What we need is a "consumer reports" for R/C.

Brian
--
http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism
Seismic FAQ: http://www.skywise711.com/SeismicFAQ/SeismicFAQ.html
Quake "predictions": http://www.skywise711.com/quakes/EQDB/index.html
Sed quis custodiet ipsos Custodes?
Old Oct 24, 2009, 09:56 PM
Martin X. Moleski, SJ
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

On Sun, 25 Oct 2009 00:05:00 GMT, Skywise <into@oblivion.nothing.com> wrote in <MCMEm.133144$w01.89959@newsfe08.ams2>:

>What we need is a "consumer reports" for R/C.


I think there is a website called "RCuniverse" that might
have something like that. Or "RC Universe"?

I visit it a lot through Google.

I prefer newsgroups for daily chatter.

Marty
--
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See http://www.big-8.org for info on how to add or remove newsgroups.
Old Oct 25, 2009, 12:46 AM
Skywise
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

"Martin X. Moleski, SJ" <moleski@canisius.edu> wrote in
news:TdudnQ3NS5HjI37XnZ2dnUVZ_radnZ2d@supernews.co m:

> On Sun, 25 Oct 2009 00:05:00 GMT, Skywise <into@oblivion.nothing.com>
> wrote in <MCMEm.133144$w01.89959@newsfe08.ams2>:
>
>>What we need is a "consumer reports" for R/C.

>
> I think there is a website called "RCuniverse" that might
> have something like that. Or "RC Universe"?


http://www.rcuniverse.com

Thanks for the tip.

And for those technically inclined, I also found the following
were very interesting comparing the spectrum use and data bursts
of various 2.4 Ghz systems:

http://www.flyelectric.ukgateway.net/24ghz.htm
http://www.flyelectric.ukgateway.net/24scanner.htm

Brian
--
http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism
Seismic FAQ: http://www.skywise711.com/SeismicFAQ/SeismicFAQ.html
Quake "predictions": http://www.skywise711.com/quakes/EQDB/index.html
Sed quis custodiet ipsos Custodes?
Old Oct 25, 2009, 07:16 AM
PCPhill
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

I routinely speck out my gliders with spektrum RXs with no issues, as do
many others. I don't use the 6100 for this, but many people get away with
it. There may be other issues that caused the problem. If you ran the
motor more than you usually do, you may have overheated the ESC, or run the
battery low enough to brown out the RX. Was it your first climb of the day,
or well into the pack?

PCPhill

--------------------------------------------------
From: "Vance Howard" <Vance@example.invalid>
Sent: Saturday, October 24, 2009 6:31 PM
Newsgroups: rec.models.rc.air
Subject: Re: Looking for radio reviews/comparisons

> On 2009-10-24, Skywise <into@oblivion.nothing.com> wrote:
>> I lost my easyglider today. I was going for a little more altitude
>> than I have in the past and apparently lost radio contact. I almost
>> brought it back but it finally went straight down really fast and
>> toasted everything. Complete loss except for the two wing mounted
>> servos.
>>
>> Why do I suspect the radio? Because in searching the net a bit
>> today I find that the Spektrum 6100e receiver I had is considered
>> a park flyer receiver, and apparently that doesn't just mean size,
>> it can also mean receive range. Live and learn.
>>
>> I'll still use the DX6i with the Blade 400 heli it came with. I
>> don't even get past 50 feet away with that. But I want something
>> better for the next plane.
>>
>> Anyway, I am looking for web sites that compare and review radio
>> systems. I'd also like to find real world range tests. Currently
>> I'm looking at either a Spektrum or Futaba 7ch 2.4ghz system,
>> leaning towards Futaba at the moment provided I find info that
>> the zero id problem has been nixed. I'm also open to other brands.
>>
>> TIA
>>
>> Brian

>
> Hi,
> Why not just keep using the Spektrum DX6i? You can get full range
> Spektrum rx's that will work with it. The range isn't a limitation of
> your transmitter. True, the DX6 was a park flyer radio, but the DX6i is
> full range.


Old Oct 25, 2009, 09:57 PM
Skywise
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

"PCPhill" <ptr@beadbimbo.com> wrote in news:4ae44194$1@news.bnb-lp.com:

> I routinely speck out my gliders with spektrum RXs with no issues, as do
> many others. I don't use the 6100 for this, but many people get away
> with it. There may be other issues that caused the problem. If you ran
> the motor more than you usually do, you may have overheated the ESC, or
> run the battery low enough to brown out the RX. Was it your first climb
> of the day, or well into the pack?


I'd say I was only in half way to 3/4'ths. I don't know exactly as
I didn't bother to look at the timer on my Tx after I heard the thud.
I use 2100mAh 20c packs and with my flying style was getting about
20-25 minutes before I got the pulsing motor warning. Motor was an
Eflite Park 480 1020kv outrunner on an Eflite 30 amp esc. The only
setting I changed on the programmable esc was to enable the motor
brake to keep the prop from windmilling on glides.

I doubt it was a brown out as it happened after I throttled down,
and I never had brown outs before on this setup. I did once but
that was on the old brushed motor and esc. The voltage sense in
the new esc has always seemed to work.

On this climb I was going for some more altitude than before, about
a 60 degree climb. I figured I was pushing range so I turned her back
to me. She nosed down right after throttle off but I thought I just
stalled it. Response suddenly became sluggish and then she nosed dived.
This happened twice and each time she recovered I pulled it up level
which was towards me. The final time it just never came back. It must
have gone straight down from about 150 ft altitude. Figuring it was
range I thought that since each recovery brought it closer to me it
would eventually come back for good. The crash site was about 520
ft away (via google maps), so I know I was further than that at first.
I guesstimate altitude at 300-400. Even so, that's line of sight less
than 1000. I was definately higher and further out than I had ever
been before.

The Rx may have survived the crash, and I kinda intend to check if
it lives. If so, I'm going to do a range check at full Tx power and
see how far I get. Even if it survived, I won't chance the part in
a new bird due to how hard she hit.

My first bird died spectacularly.

Brian
--
http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism
Seismic FAQ: http://www.skywise711.com/SeismicFAQ/SeismicFAQ.html
Quake "predictions": http://www.skywise711.com/quakes/EQDB/index.html
Sed quis custodiet ipsos Custodes?
Old Oct 26, 2009, 04:09 PM
Nigel Heather the-heathers.co.uk>
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

I think you'll find that if you look at Spektrum, Futaba or JR you will find
them all pretty similar.

You may find one has features that you particularly like and others that you
don't.

Each brand has it's own loyal following so it's very unlikely you will find
a cold mathematical breakdown of which is best.

As for frequency hopping versus dual channel - I think you'll find that all
full range receivers are pretty robust.

I've not made the jump to 2.4GHz and even though I have a PCM TX, most of my
RXs are PPM and I've never experienced a serious glitch.

The only comment I would add is that in my experience Spektrum are cheaper
so you will get more features for your buck than with Futaba or JR.

Cheers,

Nigel



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Old Oct 27, 2009, 05:37 PM
Morgans
Guest
n/a Posts
Re: Looking for radio reviews/comparisons


"Skywise" <into@oblivion.nothing.com> wrote

> My first bird died spectacularly.


That is not unusual for a first bird, in my experience. Come to think of
it, not for some of your future planes, too! :-)

To me, it is like saying, " I found it the _last place_ I looked for it!"
Of course it was in the last place you looked, because when you find it, you
stop looking! Duh!

Same thing holds for RC planes. If you fly them, you will crash them beyond
repair, eventually. That's what happens to me, and I don't think I am in
the minority. Every day they live, our planes are one day closer to their
death. If you have several planes, it may take a few years for it to
happen, though.

Good luck in your search for your search for a new plane and system.
--
Jim in NC


Old Oct 27, 2009, 09:43 PM
Skywise
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

"Morgans" <jsmorgan@charterJUNK.net> wrote in
news:qCKFm.44154$eF1.39752@newsfe24.iad:

>
> "Skywise" <into@oblivion.nothing.com> wrote
>
>> My first bird died spectacularly.

>
> That is not unusual for a first bird, in my experience. Come to think
> of it, not for some of your future planes, too! :-)


Very true. Although I must say this happened much sooner than I
expected. It may have been my first bird, but I've been a sim
pilot for a loooooooong time. One of these days, the real thing,
I hope. So I had very little learning curve. A few scrapes on
my first couple flights but that was just getting a feel for
the handling.

<Snipola>
> Good luck in your search for your search for a new plane and system.


Thanks. I'm doing 'research' (aka drooling), but haven't decided
on anything yet. Right now I'm leaning towards something very
sporty which would likely stay closer to me, and keeping the
DX6i in use (besides on the heli). But later I'd still like to
get the Futaba radio as I really like the technical specs, and
I anticipate needing more than 6 channels for future use.

Brian
--
http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism
Seismic FAQ: http://www.skywise711.com/SeismicFAQ/SeismicFAQ.html
Quake "predictions": http://www.skywise711.com/quakes/EQDB/index.html
Sed quis custodiet ipsos Custodes?
Old Nov 28, 2009, 08:08 AM
Ed Anderson
Guest
n/a Posts
Re: Looking for radio reviews/comparisons

I have flown my Easy Glider Electric with an AR6100, and taken it to
great distances with no problems at all. I am primarily a glider
pilot so I am very used to fly little distant dots in the sky. But if
you are concerned about range, then get the AR500 or the AR6200. If
you can see the plane, then you can fly it.
 


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