RC mission Antenna holder for SANWA RX-491 receiver
Also with 2.4GHz the guidance of the antenna is important.
Certainly it is possible to place the antenna "somewhere" (see receiver without external antenna). However, for the best possible range and immunity to interference, it is best to simply route the antenna out of the receiver to the top.
That is not always possible. However, with this antenna holder, it is very simple.
Simply stick the holder to the side of the receiver with double-sided adhesive tape and you have a suitable foot for a short piece of antenna tube