title: 1640 AM
text: # 1640 AM
  
  The following radio stations broadcast on AM frequency 1640 kHz: 1640 AM is a Regional broadcast frequency.
  
  ## Argentina
  
  * Hosanna in Isidro Casanova
  
  ## México
  
  * XECSIB-AM in Zamora, Michoacán
  
  ## United States
  
  All stations operate with 10 kW during the daytime and are Class B stations.
  
  | Call sign | City of license | Facility | Nighttime power (kW) | Transmitter coordinates |
  | - | - | - | - | - |
  | KBJA | Sandy, Utah | 87119 | 1 | 40°42′47″N 111°55′53″W﻿ / ﻿40.713056°N 111.931389°W﻿ / 40.713056; -111.931389﻿ (KBJA - 10 kW daytime, 1 kW nighttime) |
  | KDIA | Vallejo, California | 87108 | 10 | 37°53′44″N 122°19′27″W﻿ / ﻿37.895556°N 122.324167°W﻿ / 37.895556; -122.324167﻿ (KDIA - 10 kW daytime) (daytime) 38°08′03″N 122°25′32″W﻿ / ﻿38.134167°N 122.425556°W﻿ / 38.134167; -122.425556﻿ (KDIA - 10 kW nighttime) (nighttime) |
  | KDZR | Lake Oswego, Oregon | 86618 | 1 | 45°27′14″N 122°32′47″W﻿ / ﻿45.453889°N 122.546389°W﻿ / 45.453889; -122.546389﻿ (KDZR - 10 kW daytime, 1 kW nighttime) |
  | KZLS | Enid, Oklahoma | 87168 | 1 | 36°06′55″N 97°45′23″W﻿ / ﻿36.115278°N 97.756389°W﻿ / 36.115278; -97.756389﻿ (KZLS - 10 kW daytime, 1 kW nighttime) |
  | WSJP | Sussex, Wisconsin | 87121 | 1 | 43°04′38″N 88°11′32″W﻿ / ﻿43.077222°N 88.192222°W﻿ / 43.077222; -88.192222﻿ (WSJP - 10 kW daytime, 1 kW nighttime) |
  | WTNI | Biloxi, Mississippi | 87159 | 1 | 30°28′27″N 88°51′23″W﻿ / ﻿30.474167°N 88.856389°W﻿ / 30.474167; -88.856389﻿ (WTNI - 10 kW daytime, 1 kW nighttime) |
  