Added diplexer

build_doc/aprs_digipeater.html

@@ -37,11 +37,8 @@
             <li><a href="#license" id="toc-license">License</a></li>
             </ul>
           </li>
-                              <li>
-            <a href="./aprs_digipeater.pdf">PDF version</a>
-          </li>
-                              <li>
-            <a href="https://git.meezenest.nl/marcel/aprs_digipeater">Git repo</a>
+                                        <li>
+            <a href="https://git.meezenest.nl/marcel/aprs_digipeater_weather_telemetry">Git repo</a>
           </li>
                               <li>
             <a href="https://meezenest.nl/mees/aprs_digipeater.html">Back</a>
@@ -54,7 +51,6 @@
 <p class="subtitle">with weather and PE1RXF telemetry server</p>
 <p class="author">M.T. Konstapel</p>
 <p class="date">2024-02-14</p>
-<p><a href="./aprs_digipeater.pdf"><i>PDF version</i></a></p>
 </header>
 <main>
 <article>
@@ -132,8 +128,9 @@ schematic</figcaption>
 <p><a href="./images/RPi-LoRa-shield_schematic.pdf">PDF version of
 schematic</a></p>
 <h2 id="peripherals">Peripherals</h2>
-<p>The Raspberry Pi need some extra hardware for interfacing the various
-peripherals, like the transceiver, the ModBus and the Rnode modem.</p>
+<p>The Raspberry Pi needs some extra hardware for interfacing the
+various peripherals, like the transceiver, the ModBus and the Rnode
+modem.</p>
 <h3 id="usb-hub">USB hub</h3>
 <p>As the Raspberry Pi only has one USB port, a hub is essential. I used
 an old one I had laying around. Taken out of its case, it fits
@@ -185,6 +182,7 @@ LoRa32 v2.1 (also known as TTGO T3 v1.6.1). Of course you need at least
 two boards to form a network. With a good antenna, the range is easily
 100 meters (and probably more than 1 km), which is plenty enough for
 what I need.</p>
+<p>As a ham, I use the 433 MHz version, of course.</p>
 <figure>
 <img src="./images/lilygo-ttgo-lora32.jpg" title="LilyGO LoRa32"
 alt="LilyGO LoRa32" />
@@ -193,7 +191,7 @@ alt="LilyGO LoRa32" />
 <h2 id="more-than-brains-alone">More than brains alone</h2>
 <p>The Raspberry Pi with all the extra hardware is housed in a small
 plastic housing. On the back panel behind the SMA connectors and the
-power jack, I placed a copper strip. This acts as the start grounding
+power jack, I placed a copper strip. This acts as the star grounding
 strip on which all other ground wires are connected. This prevents a lot
 of RF and EMC problems.</p>
 <figure>
@@ -249,7 +247,7 @@ href="./installation_pe1rxf_aprs_weather_server.html">installation_pe1rxf_aprs_w
 <li>Rnode TCP/IP over 70 cm LoRa for internet</li>
 </ul>
 <h1 id="license">License</h1>
-<p>Copyright (C) 2023, 2024 M.T. Konstapel</p>
+<p>Copyright (C) 2024 M.T. Konstapel</p>
 <p><a
 href="https://meezenest.nl/mees/">https://meezenest.nl/mees/</a></p>
 <p>The software is published as open-source software (GPL). The hardware