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```python
# AI Dev Tool: RadioGear API Integration Wrapper
# =============================================
# A production-ready API integration wrapper for managing radio equipment listings,
# exempting ham-band-only gear, and integrating with eBay APIs.

import os
import requests
from typing import Dict, List
from pydantic import BaseModel

# Define the RadioEquipment model
class RadioEquipment(BaseModel):
    """Model for radio equipment listings."""
    title: str
    description: str
    price: float
    is_ham_band_only: bool

# Define the eBay API client
class EBayApiClient:
    """Client for interacting with the eBay API."""
    def __init__(self, api_key: str, api_secret: str):
        self.api_key = api_key
        self.api_secret = api_secret
        self.base_url = "https://api.ebay.com"

def get_token(self) -> str:
        """Obtain an access token for the eBay API."""
        auth_url = f"{self.base_url}/oauth2/token"
        headers = {
            "Content-Type": "application/x-www-form-urlencoded",
            "Authorization": f"Basic {self.api_key}"
        }
        data = {
            "grant_type": "client_credentials",

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