[Dx4win] Portable call sign entry

[Norm Covey]

Does anyone have an effective way to enter a portable call sign, so that the
accuracy of the call sign can be maintained. An example is EA4DX/HK0, when
entered in this manor, a subsequent contact with EA4DX in EA4 land, or even
in another Prefix, will not show that you have worked him in the past. If
you change the Prefix to HK0, his home is changed from EA4 to HK0 which you
might or might not catch on a new QSO.

Any ideas?

Norm
K5OS