Tx / Rx problem !
#1
Thread Starter
Tech Rookie
Joined: May 2010
Posts: 3
Hi,
as a small project for my nephew's birthday i putting a Kyosho trainer 40
together for him and found a Hitec Focus 4 without reciever and from a friend
of mine i got a HFS-04MI+ without crystal so i ordered a pair from UK with No name spec : FM35.060Mhz - UK ch66 marked T/R 27,
Something is very wrong couse when hooked them up with a pair of cheap
servos they went completly nut's
So far i know is the black lead to the right side on Rx but not sure !
So what have i done ? hooked up wrong , wrong type of X's - bad Tx - Rx ?
I would be extremly greatful for a reply in this matter,
Regards
Kjell.
as a small project for my nephew's birthday i putting a Kyosho trainer 40
together for him and found a Hitec Focus 4 without reciever and from a friend
of mine i got a HFS-04MI+ without crystal so i ordered a pair from UK with No name spec : FM35.060Mhz - UK ch66 marked T/R 27,
Something is very wrong couse when hooked them up with a pair of cheap
servos they went completly nut's

So far i know is the black lead to the right side on Rx but not sure !
So what have i done ? hooked up wrong , wrong type of X's - bad Tx - Rx ?
I would be extremly greatful for a reply in this matter,
Regards
Kjell.
#2
Tech Initiate
Joined: May 2007
Posts: 24
From: Auckland N.Z.
Hi, as a small project for my nephew's birthday i putting a Kyosho trainer 40 together for him and found a Hitec Focus 4 without reciever and from a friend of mine i got a HFS-04MI+ without crystal so i ordered a pair from UK with No name spec : FM35.060Mhz - UK ch66 marked T/R 27, Something is very wrong couse when hooked them up with a pair of cheap servos they went completly nut's
So far i know is the black lead to the right side on Rx but not sure ! So what have i done ? hooked up wrong , wrong type of X's - bad Tx - Rx ? I would be extremly greatful for a reply in this matter, Regards Kjell.
So far i know is the black lead to the right side on Rx but not sure ! So what have i done ? hooked up wrong , wrong type of X's - bad Tx - Rx ? I would be extremly greatful for a reply in this matter, Regards Kjell.1. If TX & RX are say 41 or 72 Mhz, then the 35 Mhz crystals will not be compatible.
2. If both TX & RX are labelled for the 35 Mhz band, then if the receiver crystal has a blue tip, it is dual conversion and will not operate your single conversion 5ch receiver.
sub Section "Glitches & Jitter in Receiver, Servo & ESC - causes and cures " under
"Radio Systems, Accessories, Alterations and FAQ." at:
Alan's Hobby, Model & RC FAQ Web Links may assist.
Regards
Alan T.



