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[wideawake]

Hi there

Yes effectively an unlimited number of boats on 2.4GHz can operate omn the same pond.   Actually the limit is probably 80 (the number of channels on 2.4GHz).   The transmitter chooses its own clear channel to transmit on so will never use a channel on which it detects another signal.   

Many of the gizmops on modern equipment are available on 40MHz gear as well as the 2.4GHz stuff.   Not all are useful to everyone but once you get into chip-based gear it's usually easier to include everything than to disable some functions.   Most transmitters are programmed via menus on the unit, only a few of the cheaper sets use a computer to do the programmimg.

Keeping to the simpler things, servo reversing is useful if you find that you've fixed up the rudder linkage such that right stick is left rudder or vice versa.  I know you could redo the linkage but a quick "servo reverse" is simpler.   End point or range adjustment is really handy and avoids the need for lots of fiddling with servo linkage throws.   Just set the maximum position you need on the channel end point and it'll automatically be full throw on the stick.   I do scale sail and use a Hitec winch.   I don't neeed to think too much about how many turns the winch takes as I simply set up the transmitter channel to give me the travel I need on the sheet.

I use 2.4GHz for the convenience and because I came back into the hobby, with no gear,  after many years away and 2.4GHz was just becoming available and was clearly the way to go for someone starting from scratch.   

BTW i'm in the grumpy old man category having drawn my pension last year but I have to admit, having a background in electronics, I tend to be an early adopter of things like DAB and digital TV as ell.

HTH

Guy

[vintagent]

Hi Guy, many thanks for that.
Much clearer now.  I can see the benefit of the multiple channels and the maximum throw on servos, etc.
Pity an English manufacturer doesn't make one!

I am completely clueless on electrics. I ain't proud of it, especially as my Dad was an Radio and TV man, but it all seemed so claustrophopic to me and I can only mend things that move, so all this endless quoting of new terminology and acronyms always seems like point scoring to me, even when it isn't.

As for digital broadcasting, they need to get that sussed properly before the big change over or there'll be riots in the street.
Sometimes it works, sometimes it doesn't and our digital radio we had on our boat was a complete pain to tune.

Btw are you actually on a boat as we type?  We cruised the Midlands for 18 months on ours a while back and intend getting back on the Cut again as soon as we can afford it.
Regards,
Vintagent

[Timo2]

Hi Vintagent         and All

   Just to use the spoon a bit ,
                                           Cost wise keep low but good   ( A Scotsman at heart    )  

   Hobbyking  2.4Ghz

   Hobby King 2.4Ghz  4Ch Tx & Rx (Mode 2)                             26.95

   Hobby King 2.4Ghz Receiver 6Ch     X 2           12.74 =            25.48
  
  Turnigy 1450mAh 3S 11.1v Transmitter Lipoly                            7.51
 
   Hobby King Battery Monitor 3S                                                 3.99
 
                                                                                            63.93

                                                          Shipment                     30.52

                                                                                           $ 94.45         (  1.47 ) =   £ 64.25   the LOT !

Over ten Hobbyking / Turborix  units in our club and more Ordered      

PS  

   6 Chanel unit add     $ 6.00       Eg.   £ 4.09  

Timo2
 
  

[Peter Fitness]

One of my sons was visiting us at the weekend, and he liked the Hobby King 2.4Ghz radio so much that he ordered one on Saturday, and had it in his hot little hands by Wednesday, in Sydney. His is the 4 Channel version which has servo reversing switches on the front of the Tx like a "normal" radio, so it's not necessary to have a PC to modify the setup. One other disadvantage to these cheap radios is that they don't come with a manual, although it's easy to download one from the internet. Also, there were no instructions on how to "bind" the receiver to the transmitter, but a quick look at the Hobby King web site soon has this sorted.

I bought some low self discharge (LSD) 2200 Mah NiMh batteries from Hobby King instead of using dry cells. A Futaba charger can be used to charge the batteries while they are in the transmitter.

Peter.

[vintagent]

Timo2,

Thirty quid postage!!!!????

Two receivers with 6 functions.  Why?

If you want this stuff, are you saying there are no dealers in your own country?

Also, you need a charger, presumably and ESCs on top of that lot.  I admit, though that the cost of the basic R/C gear is almost unrealistically cheap and must be tempting if you are starting from having no gear at all.
For family and political reasons I try not to buy Eastern gear, though it is almost impossible not to and improving exponentially in quality.
For younger people I can see why it appeals.
But I remember when Britain had an industry.  Nuff said.

Thanks for the explanations on the new stuff, gents. I now feel I wouldn't be too embarrassed should I ever find myself in one of Britain's disappearing model shops.
I might make all I can, but I still get a buzz from standing amongst all the goodies!

Regards,
Vintagent

[Timo2]

Hi Vintagent

       it,s  Dollar not Pounds.     the parcel is 1.5 kg    7 =10 days  air mail .

       Some members   order  1 TX       plus     12 RX units


                    The standard  order   is  1 TX      =    3  RX      ( 2 boat power  1 Sail )

        Timo2

P.S.
        Best boat      ESC    are        ACTion units


You have a PM

[vintagent]

OK, I'm seeing the need for bigger orders if the min. is 3. 
There's me thinking you need two Rxs in one boat!

I guess for air freight of that weight, thirty dollars is reasonable.

PM received, but I saw it too late.
Left a message.
Vintagent

[dougal99]

Yes effectively an unlimited number of boats on 2.4GHz can operate omn the same pond.   Actually the limit is probably 80 (the number of channels on 2.4GHz).   The transmitter chooses its own clear channel to transmit on so will never use a channel on which it detects another signal.   

I thought the newer equipment used 'spread spectrum' technology which effectively means no limit to the number of TXs on-air at the same time? Is that not so?

[andyn]

All 2.4 giggling moggies radios use spread spectrum channel hopping, you'd be very hard pressed to find one that can't. On the Dx6i you have the option to stick to some preset frequencies, but it's still hopping across them and theres a few hundred of them, too. Using this system means that if radio contact is lost, it's very quickly regained.

[Klunk]

just blew a 2-4 receiver up, very spectacular""""!!!!!

[Martin (Admin)]

How? 

[Robert Davies]

Pictures! 

The usual way of ka-BANG-ing a receiver is to get the red and black (or buff and brown wires interchanged - it can be pretty spectacular!

-Rob

[Klunk]

new receiver, bound it outside the boat, fitted into boat with a 15a sea rover speed controller, a turborix 2.54 receiver and a futaba servo for the rudder. connected the 6v battery with becs to power it all held receiver and turned on tx then hit the power button and bang in my hand!!! Blew the speedcontroller, stripped the servo gears and  blew the receiver. stripped it all out, put a mtronik 15a speedcontroller, same 6v battery,new 3001 servo and hey presto, it works!!! no idea what caused it, all connectors and wire's were correct!

[Martin Cross]

I have a problem with my Turborix 6 chnl.  I can get it to work fine on Chnls. 1,2,3 &4.  5 & 6 will only work if mixed with another chnl.   Is there any possibility of chnls. 5 & 6 working independently?  I am using it in ACRO  and mode 2.  I look forward to some help.  Regards to all Martin Cross

[AlisterL]

I have a problem with my Turborix 6 chnl.  I can get it to work fine on Chnls. 1,2,3 &4.  5 & 6 will only work if mixed with another chnl.   Is there any possibility of chnls. 5 & 6 working independently?  I am using it in ACRO  and mode 2.  I look forward to some help.  Regards to all Martin Cross

Hi Martin,

if memory serves correctly, you need to remove the default mixing assignment first, then assign the channels to the Switches/VR's (I think SW1/SW2 and VRA/VRB).
Note that only the VR's will give a full range of servo movement - assigning to the switches produces only a minimal amount, no doubt enough for a switching device.

HTH,

[Timo2]

For those that find the factory T6 software unfathomable, this:

http://www.sgr.info/usbradio/default.htm

is rather good....

...and quite a bit prettier too

-Rob

Hi all

Try this software much better to use  

Timo2  

P.S.  so easy to set up all channels and set servo movement