# Equipment

# RX Receivers

# TX Transmitters

Nowadays, transmitter usually is part of transceiver, that is why is chapter mostly dedicated to self-contained transmitter projects, such as radio beacons (telegraph, WSPR and APRS).

# XCVR Transceivers

A transceiver stands for TRANSmitter/reCEIVER, a combination of receiver and transmitter. Usually, a main element on radio amateur desk ("shack") and a door (or window) on the air.

# FlexRadio 6400

SmartSDR (on Macintosh)



Global shortcuts
```

CMD-D    DX-Cluster

View
OPT-CMD-R  Radio Control
OPT-CMD-S  Slice details
OPT-CMD-P  PTT
OPT-CMD-P  Log new QSO

```
[![](https://storage.googleapis.com/2dz-data-dox/uploads/images/gallery/2026-01/scaled-1680-/r2Qf5qUNuB89R5xZ-image-1768640598091.png)](https://storage.googleapis.com/2dz-data-dox/uploads/images/gallery/2026-01/r2Qf5qUNuB89R5xZ-image-1768640598091.png)

Key mappings

[![](https://storage.googleapis.com/2dz-data-dox/uploads/images/gallery/2026-01/scaled-1680-/dgJAhfdwB7u8EkRA-image-1768640471254.png)](https://storage.googleapis.com/2dz-data-dox/uploads/images/gallery/2026-01/dgJAhfdwB7u8EkRA-image-1768640471254.png)

# ANT Antennas

Antennas are all of sorts. They can be big, very big and strange. Due to the limitations of my locations (QTH), mostly, I build portable antennas.

# PA Power Amplifiers

Power amplifiers are intended.. hmm.. to amplify power of outgoing signal from transmitter to antenna. I would categorize power amplifiears, very broadly into three categories: low power QRP (to 20 W), normal power (to 100-200 W) and high power QRO (all above), sometimes you may see QROO (which stands for very high power and, usually, amount power which is being delivered is not asked, but silently observed from power meter. :D

# 00164 - QRO Power Meter

= Objectives =
- measure outgoing and reflected power from transceivers and power amplifiers.
  
= Resources = 
- digital power indicator and measurament board (https://eb104.ru)
- case aluminium case

= Schematics =


= Assembly =


= Inital run and adjustments =

# PSU Power Supply Units and PDU Power Distribution Units

To be able to emit radio signals, we need energy. That energy, usually, comes from the socket, but not always. This chapter is all about it.