Tx/Rx questions

[mrmugen]

I agree with Greg....ask away.....or you'll never know. I always think of the guy who taught me most of the stuff I know (or at least the base stuff). He was a very patient and understanding guy and still get's the occasional call from me..

1. You can use any rx no matter the number of channels with any tx. I use a lot of 6 ch rx's for my planes so I can run drop mod's and such.

3. You will need a crystal for your rx and tx that are matching.
4. Most rx's are pretty much the same. Some have better filters for noise and better components. Most are basically the same. Castle creations rx's are a step above all others. They have incorporated some fancy stuff into theirs like TSR which is Transmitter signal recgnition. This feature recognises and locks into your radio. Each radio has a little different fingerprint and it will not let others interfere with your set up while in use.
5. Servo's are what they are..a little motor inside a box that gets a signal from the rx that tells it to move and how much. Servo's have many different gear types and motor's. Some servos are digital and some analog. Some metal geared, some karbonite and some nylon...etc. It all depends on the application. If you want to bash a buggy then metal gears are a must. However if you want to fly the SC nylon work fine and save weight.

Hope this helps pal. Nice to see someone asking good questions. Take care, Kevin

[crashedagain]

Well i narrowed down my Christmas list. After crashing 2 supercubs over the weekend, i decided i may NOT need another plane. In fact, what I may have needed was a simulator. I got the RealFlight G4 setup. I tried it out at the store and loved it. I loved the fact that i could use my own Tx with the program. As for the Tx I decided to get, I did a LOT of research and ended up getting the Airtronics RD8000. After everyone's input, I decided that i didn;t need a 2.4GHz unit. The only thing was that it was a bit pricier than I anticipated. Many online stores had it from the 300.00 to the 450.00 (USD) price range. I ended up buying it from HobbyPeople.net. They had it for 249.99 and i was happy to place my order with them for such a low price: that was with the 4 servos. Just in case anyone was interested, I had to buy a cable to connect the RFG4 program to the new RD8000 Tx. The cable was 4.99 and the model # was GPMZ4062.
Since i bought the Flight Sim at the store and its already home, i am being tortured by seeing it under the tree and not being able to use it till 12-25. (yeah, i didn't gift wrap it since I am the one opening it).

So have a check on HobbyPeople.net to see if they have great prices for something You might be looking for. By the way, i called them beforehand and i found out that they were the US distributor for the Airtronics Tx's.

regards all

Colin.

[crashedagain]

So far I have been readin up on some stuff and here is another quandary... What is a BEC and why would I need it? How is that different from an ESC? That Airtronics RD8000 is nicely wrapped and under the tree next to me.... its just begging of questions to be answered. Anyone have any experience with this Tx and could share some positive insight?

Colin

[duck9191]

BEC stands for battery elimination circuit. what it does is eliminate the need to a second battery to operate the receiver and servos it pulls off the main battery insted, which is good in smaller planes because they need to be lite.

[flydiver]

mrmugen said:

2. pos/neg shift basically means which direction the servo will travel when a input is made. They can be reversed with most radio's.

+/- shift is how the data stream is processed:

[The data stream from the transmitter is encoded by swinging the
frequency up (or down) a little to mark the separation and pulse lengths of each servo.

Which way the swing is, is whether its positive or negative shift.

If you use a transmitter/receiver pair on opposite shifts, they simply
don't work.]

It is true that different servos will move the opposite direction with the same signal. This can be useful if you need to reverse a servo but don't have that function on a TX.

fly

[mrmugen]

Thanks for the correct definition of shift. I was way off! Sorry if I confused anyone. Kevin

[crashedagain]

Hey MrMugen, Have you dug yourself out of all that snow yet? It was absolutely ridiculous here in SE Mich.

[mrmugen]

LOL....what snow? It snows everyday here. It's not a matter of "if" it snows it's a matter of how much. In Ishpeming we are about 850 ft higher than lake superior and only 11 miles away to the south. So with most of the winter winds being north, we get hammered. There is always a twinkle of snow in the air no matter how bright the sun shines. I am going outside to get the 4 wheeler started for the first time this winter. Time to go ice fishing. Kevin

[duck9191]

hey crash how much did you guys get, we got 8-10 in port huron. was kinda disappointed because they were saying up to 16. owell about time we got some.

[crashedagain]

we got about 8-10 here too. the roads were ridiculous!!!

[rcairplanepilot]

hello, im not gonna get indepth here, i just wanted to say "RESEARCH" very good what ever radio gear your thinking of buying, you dont want to be stuck with some gear that you cant even use, you need to consider if RX is dual or single shift, high or low band , then they have PCM, an PPM FM an AM, and if its for air,surface...etc..etc.. blah..blah..blah, you dont want to be limited to RX's that will work with your new TX also, what im trying to say is it gets "mind boggeling", but research, ask questions, dont get stuck with gear thats not what you thought it be like, or that not compatable at all with gear you have, or thinking of getting, resist impulse buying,LOL.theres all kinds stuff out there,can get confusing. and if you buy used,"you can get good deals that way" besure you understand what your buying, alot of people assume you know about what they are selling, or they dont care they just want your money, after all its not their job to hold your hand,LOL. rc

[crashedagain]

Thanks for your words of advice RC. I have already purchased the Airtronics RD8000. I feel confident in this purchase because of all that the capabilities of the unit: dual shift, Fm-PCM, FM-PPM, reverse servo, 10 plane function, and a few other doodads. I can use it with a bunch of Rx. I was initially going with a 2.4GHz system, but i didn't want to be limited to Rx by any one manufacturer (or the higher cost of the 2.4GHz Rx). And the $250. price of the unit with servos and all wasn;t a bad price either. But, like i've said before, its still under the tree... teasing me. Thanks again for your concern and advice

Merry Christmas Everyone
Colin.