Mobilefish.com
Author: Robert Lie

Determine collinear antenna 2 gain for elevation=90° and azimuth=0°, 
see LoRa/LoRaWAN tutorial 46.
See: https://www.mobilefish.com/developer/lorawan/lorawan_quickguide_tutorial.html

The ½λ dipole antenna used is the ½λ dipole antenna with less parts as explained in 
tutorial 41.

==========================================================================================
½λ dipole antenna measurements
==========================================================================================
{
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  "frequency": 868.5,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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    {
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      "timestamp": 3206156483,
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      "latitude": 52.451794,
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      "location_source": "registry"
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}

{
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  "frequency": 868.1,
  "modulation": "LORA",
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  "coding_rate": "4/5",
  "gateways": [
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      "time": "2019-12-11T11:37:14.749271Z",
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    {
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  ]
}

{
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    {
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}

{
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{
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      "time": "2019-12-11T11:39:04.184045Z",
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    },
    {
      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 3352449939,
      "time": "",
      "channel": 2,
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      "longitude": 4.8112044,
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      "location_source": "registry"
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  ]
}

{
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  "frequency": 867.7,
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      "timestamp": 3388331348,
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  ]
}

{
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      "timestamp": 3424356179,
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}

{
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      "time": "2019-12-11T11:40:53.104684Z",
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{
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      "timestamp": 3399637356,
      "time": "2019-12-11T11:41:29.460376Z",
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    {
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      "timestamp": 3497726068,
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}

{
  "time": "2019-12-11T11:42:06.700253996Z",
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  "gateways": [
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      "timestamp": 3436849083,
      "time": "2019-12-11T11:42:06.672097Z",
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    {
      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 3534937731,
      "time": "",
      "channel": 2,
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      "longitude": 4.8112044,
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    }
  ]
}

{
  "time": "2019-12-11T11:42:42.957908058Z",
  "frequency": 868.1,
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  "coding_rate": "4/5",
  "gateways": [
    {
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      "timestamp": 3571207091,
      "time": "",
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      "longitude": 4.8112044,
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    }
  ]
}

{
  "time": "2019-12-11T11:43:19.810528441Z",
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{
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  "frequency": 868.3,
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  "gateways": [
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      "gtw_id": "eui-7276ff000b031ebb",
      "timestamp": 3546144971,
      "time": "2019-12-11T11:43:55.967967Z",
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    },
    {
      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 3644233451,
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      "longitude": 4.8112044,
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      "location_source": "registry"
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  ]
}

{
  "time": "2019-12-11T11:44:32.757714002Z",
  "frequency": 868.5,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
    {
      "gtw_id": "eui-7276ff000b031ebb",
      "timestamp": 3582902179,
      "time": "2019-12-11T11:44:32.725169Z",
      "channel": 2,
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    {
      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 3680990587,
      "time": "",
      "channel": 2,
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  ]
}

{
  "time": "2019-12-11T11:45:09.619841954Z",
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  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 3717860267,
      "time": "",
      "channel": 4,
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      "location_source": "registry"
    }
  ]
}

==========================================================================================
Collinear antenna 2 measurements (elevation=90° and azimuth=0°)
==========================================================================================
 
{
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  "frequency": 868.5,
  "modulation": "LORA",
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  "coding_rate": "4/5",
  "gateways": [
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      "timestamp": 890908659,
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    }
  ]
}

{
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      "timestamp": 926533259,
      "time": "2019-12-11T11:00:16.356682Z",
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}

{
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      "time": "2019-12-11T11:00:52.652165Z",
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}

{
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    {
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{
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{
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}

{
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  "gateways": [
    {
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      "timestamp": 3211136851,
      "time": "2019-12-11T11:03:51.318151Z",
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  ]
}

{
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    }
  ]
}

{
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}

{
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{
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}

{
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