---
title: "IoT Based Telemetry for Paging Transmitters – Functional Within One Day"
url: "https://maker.wiznet.io/WIZnet/projects/iot-based-telemetry-for-paging-transmitters-%E2%80%93-functional-within-one-day/"
markdown_url: "https://maker.wiznet.io/WIZnet/projects/iot-based-telemetry-for-paging-transmitters-%E2%80%93-functional-within-one-day/md"
type: "UCC: User Created Content"
author: "Admin"
author_url: "http://www.duplexerrepair.com/2018/11/22/iot-based-telemetry-for-paging-transmitters-functional-within-one-day/"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Admin"
original_url: "http://www.duplexerrepair.com/2018/11/22/iot-based-telemetry-for-paging-transmitters-functional-within-one-day/"
published: "2023-02-10"
language: "en"
hardware: ["Arduino Mega 2560", "Arduino Ethernet Shield 2"]
likes: 2
views: 215
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# IoT Based Telemetry for Paging Transmitters – Functional Within One Day

> The system monitors and will remotely display forward RF power, reflected RF power, SWR/VSWR, and the heatsink temperature.

Original author: Admin (source: http://www.duplexerrepair.com/2018/11/22/iot-based-telemetry-for-paging-transmitters-functional-within-one-day/)

## Components

- **Arduino Mega 2560** x 1 ([docs](https://www.farnell.com/datasheets/1674878.pdf?_ga=2.12759806.871556650.1519619484-654667508.1508905608&_gac=1.209399078.1518779130.EAIaIQobChMI97my66Sq2QIV77ftCh01kgA_EAMYASAAEgKPyvD_BwE))
- **Arduino Ethernet Shield 2** x 1 ([docs](https://docs.arduino.cc/hardware/ethernet-shield-rev2))

## Article

This generation of the project utilizes an Ethernet shield running on an Arduino Mega development board. It also has the added feature of temperature monitoring. The thermal probe is strapped to the back of the P.A. heatsink assembly for now. I plan to test locating the thermal probe inside the P.A. final stage cavity, but it remains to be seen whether the high level of RF inside the cavity may interfere with the circuitry which is actually located inside the working end of the probe.

![](https://maker.wiznet.io/upload/ckeditor5/713610564%5F1676057241%2Ejpg)

Arduino Mega 2560, topped with an Ethernet shield, along with a Prototyping board with a breadboard for convenient modifications, additions, etc.

![](https://maker.wiznet.io/upload/ckeditor5/713610564%5F1676057300%2Ejpg)

Screenshot of the online telemetry as it appeared during an intentionally created high SWR event (transmission line disconnected.) VSWR calculated as 3.12:1. (Note: the dashboard no longer looks exactly like this — see photo posted in 11/24/18 update above for the latest version.)

---

Source: https://maker.wiznet.io/WIZnet/projects/iot-based-telemetry-for-paging-transmitters-%E2%80%93-functional-within-one-day/