export interface FrequencyBand {
  value: number;               // MHz
  name: string;                // e.g., "Band 3"
  range: string;               // e.g., "1710-1880 MHz"
  type: 'LTE' | 'UHF' | 'VHF' | '5G' | 'Custom';
  characteristics: {
    range: 'short' | 'medium' | 'long';
    penetration: 'poor' | 'fair' | 'good' | 'excellent';
    typical: string;
  };
}
