Simple Tx, Complex Problem, Pls Help

[MicroHeli-Nut]

Spilopterus and I encountered a major radio problem with the old Colco 6Ch Transmitter on 35,040MhZ.

1) Transmission is only smooth when u put your hand or finger in contact with the antennae.

2) Throw on aileron[Channel2] is uneven even when trimming is done.

How? Should we send it back to the Sanwa Uncle again?

[Super-Hornet]

Sounds like your TX is not transmitting radio wave properly. It could be your antenna wire (From PCB to Whip Antenna) is dry joint/broken/loose or it could be your Radio Transmitter Power Transistor burn out liau.

Hey... it could your TX battery flat or weak or dying off liau.

Super-Hornet

[spilopterus]

could it be the whip antennae alone that is spoiled? I went back and tried again. It's not consistent though certain channels tend to work better. Sometimes it works perfectly fine, and then the next, it goes kownky. I actually tried to put my thumb near the tip of the whip antennae. It started transmitting well if my thumb is just a very small distance away but not touching it, but my thumb got a little burnt in the process. I think sparks must have been generating between my thumb and the antennae.

may go sim lim to get one replaced.

[MicroHeli-Nut]

Frank tells me it's a grounding problem.... But hold do we ground Antennaes?

[HZM]

yup, likely grounding issue. When your hand touches and the prob is gone shows that the noise runs thru yr hand to ground.

Mike

[Super-Hornet]

Hi all

I not sure about the grounding but according to what I know on Radio Transmission, if u ground antenna, u got either no transmission or very very low transmission. If u know how to open up your TX, please check the wire that goes to your whip antenna. See whether is it loose or dry joint.

Super-Hornet

[spilopterus]

Well, it's definitely not loose cause micro and I soldered it together that day. But what is a dry joint?

Anyway, I bought a new antennae. It seems to work better but there is still some slight noise. Not as bad as the other day, i could mysteriously move two servos with a single move of the joystick.

So like Mr. Bean huh...