Simple FTDI PTT & CW Keying Interface

April 15, 2025 Adam 0

It doesn’t get any simpler than this!

This interface uses the RTS and DTR signal lines from a cheap FTDI USB Serial Adapter, and provides isolated keying for both PTT and a CW key.

 

Problem!

The FTDI adapter provides … Read more...

OCF 40M Dipole Repair

April 12, 2025 Adam 0

Adam fixes his faulty 40M Off Center Fed dipole, after being exposed to the elements for 16 years.

The enclosure was cracked, no doubt caused by the SO-239 being recessed into the sidewall.

A thinner sidewall means the connector will … Read more...

New Eltek Touchscreen Controller & Monitors

April 1, 2025 Adam 0

Both the Eltek Flatpack2 Touchscreen Controller and Eltek Monitor projects have been updated.

The PCB has been redesigned so the controller board can now piggyback mount to the screen.

This makes mounting much easier, with only one set of screws … Read more...

Eltek Controller Compatibility

February 20, 2025 Adam 0

The following Eltek Flatpack 2 Rectifiers are known to work with all of my Eltek controllers.

Thank you to those who spent a few minutes to take a photo and send it in.

 

Flatpack2 48/2000 HE   24115.105 Read more...

Eltek Flatpack 2 Monitor Available

February 19, 2024 Adam 0

Two versions of the Eltek Flatpack 2 Monitor are now available, one with a colour TFT screen, and the other with a mono OLED screen.

The colour screen has one fixed font.

A close up pictures shows the large text … Read more...

Eltek FP2 Monitor Development

December 3, 2023 Adam 0

Update: 19-Dec-2023

Eltek FP2 Monitor is currently being developed as a replacement for the popular Volts Setter.

Eltek Monitor is used to set the default start-up voltage of an Eltek FLATPACK2  24 V or 48 V Rectifier, and the following … Read more...

Homebrew Satellite Antenna Elevation System

July 23, 2023 Adam 0

For working satellites, horizontally polarised yagi antennas will be mounted on a non-conductive crossboom made of FRP (Fibreglass Reinforced Polymer).

A Yaesu G-800DXA azimuth rotator is already on station, so only a system to rotate elevation is required.

Elevation rotation … Read more...

Anytone AT-D878UVII+ (v3.01) VK Codeplug

March 16, 2023 Adam 0

VK Reference Code plug for Anytone AT-D878UVII+ (v3.01 firmware)  hand held radio.

Features

• Mode 0 (zero)

Most known VK DMR repeaters – considering the poor state of VKDMR.com, and the foolish decision to use a Stupidbook Read more...