PDA

View Full Version : need help to buy rc transmitter



satti
10-30-2006, 11:02 AM
hi friends

iam planning to buy a general purpose R/C transmitter as in the following link
http://www.robotmarketplace.com/marketplace_rc_radioGWT4A.html

as my brother is coming from US he said he will bring one for me but i

dont know the specifications.

my purpose is to connect the remote to any robot.

plz help me out....

regards
satish

docel
10-30-2006, 02:10 PM
It will be better to buy a 6 or even 8 channel R/C, but expensive.

satti
11-01-2006, 09:58 AM
hi,

thanks docel for ur reply iam planning to get a 6 channel one but in the following link

http://www.robotmarketplace.com/marketplace_rc-radios.html

its mentioned that we cannot use it for ground robots will it be a problem

if i buy 72Mhz one why iam getting this one is iam also getting servos

with it for the same price of 75Mhz one without servos


The FCC regulates that you CANNOT legally use 72Mhz systems for ground-based vehicles, but we get a lot of requests for 72Mhz systems for those of you flying model aircraft. Now you can purchase this system on the 72Mhz frequency from us as well. PLEASE DO NOT attempt to use the 72Mhz system for a ground-controlled robot


regards
satish pathrudu

docel
11-01-2006, 11:47 AM
The FCC regulates that you CANNO

1. That is for the US...... :wink:[/quote]
2. 72MHz is VHF. Any signal >30MHz will fast approach Line-Of Sight property. This may not be good, let us say, if your Robot is behind a hill.... :)
So....Dont bother!! You may lose some range , but it happens with 27MHz too, due to interference from other 27MHz devices!!!

satti
11-01-2006, 12:56 PM
Thanks Doc