The Qodosen is an excellent radio. The only thing missing is a longer telescopic antenna to get the full potential out of the tef6686, your invention comes in handy.
Yes, you are absolutly right. Therefore, I came up with an analogue of the antenna of the Tecsun An-07 extension cord- unfortunately in Russia this antenna is not sold, there is no aliexpress, and there is no Taobao. Therefore, you have to invent yourself. This is a regular eraser (sterka), it plays the role of attaching two antennas.