Herb,
Just reading your post, I think you have the procedure backwards.
First - Set the Transmitter to the Frequency and channel you want. Hold Frequency button until it flashes and then continue to press it and the frequency will move across the screen. After picking a frequency, say 6, don’t touch anything until it quits flashing. Your TE is now on frequency 6.
Next set the channel by pressing one of the two buttons closest to the top, when it flashes you can change the channel by moving the light of the diodes from left to right if you hold down the left button or right to left if you hold down the right button. When you get to the channel you want, say 7, you can wait until it quits flashing or hit any of the regular buttons like fast, slow, change direction or whatever other than the two channel buttons or the frequency button.
Your TE is now on Frequency 6 and Channel 7.
You can link a receiver to this frequency and channel by holding the resync button down on the receiver until it LED lights up. When it lights up on the receiver hit A on the transmitter, the LED on the receiver will start flashing. Then hit the A again and the light on the receiver will go solid and it is linked. You can check it by trying to change directions. You can change the speed of the transmission response by choosing A thru E. I always use A.
This receiver is now linked to Frequency 6, channel 7 on any Aristo Transmitter of the same frequency 27 or 75 mhz.
Your receiver and transmitter either both have to be 27 mhz’s or 75 mhz’s.
I hope this is clear. Ask more questions if it is not.