Some transmitters don't have a lanyard loop at the top (where it should naturally be) so I designed this in Tinkercad. Use some mounting tape or hot glue or snot to stick to your transmitter. Note: for the SLT2 transmitter in the pic, the top of the Tx is not flat, but rather has a peak. To account for this, use two strips of mounting tape and mount them on the outward edges, so that there's no tape in the middle. That will account for the peak, and allow the plate to mount flat. Use a piece of color-matching paracord or your shoelaces for the ring.

Made a few color changes in the model to make the text stand out and make it pop a little.

Plate is natively 1"x1.5". Resize to your needs