spot

type Info struct {
	DXCC       *dxcc.DxccInfo     `json:"dxcc_info"`
	LoTW       *lotw.UserActivity `json:"lotw_info"`
	IsLoTWUser bool               `json:"lotw_user"` // Convenience field
}

type Spot struct {
	Spotter   string    `json:"spotter"`
	Spotted   string    `json:"spotted"`
	Frequency int64     `json:"frequency"` // In Hz (canonical storage unit)
	Message   string    `json:"message"`
	When      time.Time `json:"when"`
	Source    string    `json:"source"` // e.g., "DXCluster", "SOTA", "pota"
	Band      string    `json:"band"`   // e.g., "20m", "40m"

	SpotterInfo Info `json:"spotter_data"`
	SpottedInfo Info `json:"spotted_data"`

	// Additional data for POTA, if applicable
	AdditionalData struct {
		PotaRef  string `json:"pota_ref,omitempty"`
		PotaMode string `json:"pota_mode,omitempty"`
	} `json:"additional_data,omitempty"`
}