import requests
import json
import re


url = 'https://wireless2.fcc.gov/UlsApp/UlsSearch/searchLicense.jsp'
r = requests.get(url)
s = requests.session()
urlcallresults = "https://wireless2.fcc.gov/UlsApp/UlsSearch/results.jsp"

values = {
      'fiUlsSearchByType': 'uls_l_callsign',
      'fiUlsSearchByValue': 'kn4azq',
      'x': 22,
      'y': 14,
      'hiddenForm': 'hiddenForm',
      'jsValidated': 'true', }

testing = s.post(urlcallresults, data=values)
print(testing.content)