| RasPi-3, Raspberry Pi model B |  | 
  
    |  | Timekeeping U-blox MAX-M8Q-0-10, 25 mm patch indoors
 Downstairs, floor level
 near south-facing wall
 | 
  
    |  | CPU temperature 
 | 
  
    |  | u-blox MAX-M8Q-0-10 (inc. Galileo) GPS Satellites
 Potentially visible
 Actually used
 | 
  
    |  | GPS SNR average 
 | 
  
    | RasPi-10, Raspberry Pi model 2 B
 |  | 
  
    |  | Timekeeping "No-soldering" GPS/PPS sync
 Upstairs, high up, fair view, heated room
 | 
  
    |  | CPU temperature 
 | 
  
    |  | u-blox MAX-M8Q GPS Satellites
 Potentially visible
 Actually used
 | 
  
    |  | GPS SNR average 
 | 
  
    | RasPi-12, Raspberry Pi model 3 B
 |  | 
  
    |  | Timekeeping "No-soldering" GPS/PPS sync
 Near CH radiator
 Loft dome antenna
 | 
  
    |  | CPU temperature 
 | 
  
    |  | u-blox MAX-M8Q GPS Satellites
 Potentially visible
 Actually used
 | 
  
    |  | GPS SNR average 
 | 
  
    | RasPi-13, Raspberry Pi model 3 B
 |  | 
  
    |  | Timekeeping "No-soldering" GPS/PPS sync
 Upstairs, heated room, near north-facing wall
 | 
  
    |  | CPU temperature 
 | 
  
    |  | u-blox MAX-M8Q GPS Satellites
 Potentially visible
 Actually used
 | 
  
    |  | GPS SNR average 
 | 
  
    | RasPi-22, Raspberry Pi model 4 B
 |  | 
  
    |  | Timekeeping Uputronics MAX-M8Q-0-10 GPS/PPS sync
 Upstairs in the middle of a south-facing room
 | 
  
    |  | CPU temperature 
 | 
  
    |  | u-blox MAX-M8Q-0-10 GPS Satellites (includes Galileo)
 Potentially visible
 Actually used
 | 
  
    |  | GPS SNR average 
 | 
  
    | RasPi-23, Raspberry Pi model 4 B, 64-bit OS [PPS after 2020-May-31, week 22]
 |  | 
  
    |  | Timekeeping VK2828U7G5LF GPS module GPS/PPS sync
 In north-west facing cupboard
 | 
  
    |  | CPU temperature 
 | 
  
    |  | VK2828U7G5LF GPS module GPS Satellites
 Potentially visible
 Actually used
 | 
  
    |  | GPS SNR average 
 |