fang Here's a recommended configuration:
* X6100 (used, around 2700 RMB on Erniu)
* K4EDF 20-meter antenna (138 RMB)
* Power bank (one that supports fast charging, so you don't have to buy one)
* Type C to DC 5521 13.8V coax cable (20 RMB)
* 5-meter M-to-M coax cable (50 RMB)
* M female to BNC adapter (10 RMB)
* OTG adapter cable (10 RMB)
* Type C data cable (you already have, so no need to buy)
* Android phone (you already have, so no need to buy)
* FT8CN (free)
With this setup, you can spend under 3000 RMB and start using FT8. You can also use it for CW and SSB, although I haven't tried SSB yet; the low power might make it a bit challenging.
This radio is sufficient for FT8, and the antenna is very important. The 6100 allows you to obtain a local license with an internal antenna adjustment; carrying this along with a backpack is ideal for field use.
If you want to increase the power output, you could get a power amplifier.
Purchasing high-power equipment also requires obtaining a national license, which takes a long time. Also, it seems difficult to set up operations from outside the region if you don't have experience doing so locally.