Background andConflicts of interest: In addition to amateur radio, the OP has also become involved in the postcard exchange community.
QSL cards are typically mailed in envelopes, but since a QSL card is essentially a postcard, it can be designed directly as a postcard. Therefore, I have designed one that...Priority should be given to sending via postcards.The information fields performed well during actual shipping tests. However, the address field is designed for domestic shipping and may require slightly more compact entries for international addresses, although it can still be filled in for international shipments. We plan to improve this in the next version.
In the design, fixed positions are allocated for both standard mail barcodes and postage stamps, as well as space for applying postmarks.
The postage for sending postcards nationwide costs only 0.8 yuan. The stamp in the picture cost 1.2 yuan because it was being sent to a friend, so I chose a nice one.
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