VK4GHZ.com

Adding Car Stereo USB port into Delica

February 13, 2018 by Adam

A long overdue stereo upgrade was done recently, and the new Pioneer AVH-X3800DAB head unit has a USB port for media playback.

The vehicle is a 1998 Mitsubishi Delica Series … Read more...

Amateur Radio Modifications

Fixing a Diamond X-500 2/70 antenna

January 8, 2018 by Adam

My 20 year old Diamond X-500 2/70 antenna stopped working earlier this year.
Not wanting to muck around, I simply ordered a new X-700 from Strictly Ham the following day.… Read more...

Amateur Radio ThunderBolt GPS

Thunderbolt Display firmware files now available

October 8, 2017 by Adam

PICAXE .bas files have now been added to the main article.

Full details on how to upgrade your VK4GHZ Thunderbolt Display, and ThunderBolt Commander can be found at:

http://vk4ghz.com/thunderbolt-gpsdo-display-firmware-fix/

Amateur Radio ThunderBolt GPS Video

VK4GHZ Thunderbolt GPSDO Display firmware fix

August 28, 2017 by Adam

I have a fix for the Thunderbolt GPSDO date error!

The VK4GHZ Thunderbolt Display no longer uses the Year, Month and Day data fields sent from the Thunderbolt.

These date … Read more...

Amateur Radio Modifications Test Equipment

Weller WTCPT soldering iron switch mod

October 14, 2016 by Adam

This simple modification replaces the standard rocker switch with an illuminated type rocker switch that is a drop-in replacement.

One annoying thing about the Weller WTCPT soldering iron is, there … Read more...

Amateur Radio Microwaves Modifications Video

5/16″ SMA Spanner Mods

April 20, 2016 by Adam

Doug, VK4OE, shows us some handy modifications to a 5/16″ combination spanner to make it more user friendly when dealing with SMA connectors in tight spaces.

FPV Microwaves Multirotors

3.3 GHz FPV Cloverleaf Antenna

April 12, 2016 by Adam

I was curious about how much bigger a 3.3 GHz cloverleaf antenna would be, compared to a 5.8 GHz antenna, to see if it was a viable alternative for FPV … Read more...

Antennas Multirotors

VTX Antenna Repair – Check under the sticker!

August 24, 2015 by Adam

cloverleaf-12954538 My favorite VTX antenna is the Aomway 4-leaf cloverleaf (sometimes referred to as a skew planar, but “cloverleaf” actually comes from it’s radiation pattern resembling a four leaf cloverleaf!)

They … Read more...

Dumb Ideas! Multirotors Test Equipment

LC100-A LC Meter Mods

August 12, 2015 by Adam

Apart from measuring regular capacitor and inductor parts, an LC100-A LC meter can be handy tool for measuring the inductance of your mini-quad motor windings, to determine if a particular … Read more...

FPV Multirotors

FPV Camera Crystal Repairs

August 7, 2015 by Adam

Board cameras used in FPV applications can be quite vulnerable, and sooner or later, through-hole leaded components can fatigue and break off with vibrations.

One of the most fragile components … Read more...

Dumb Ideas! FPV Multirotors Video

How to Build an FPV Camera Shield

August 4, 2015 by Adam

A “how to” build video for the FPV Camera Shield, so you can bang a set of five of these out in about 15 minutes.

Previously described:
https://vk4ghz.com/the-0-06-fpv-camera-protector-shield/

🙂

Build: Blackout 6" Dumb Ideas! FPV Multirotors

The $0.06 FPV Camera Protector Shield

July 29, 2015 by Adam

Another FPV camera died today, and it will be the last open board camera I fit… they are just too vulnerable.

Replacing the dead Effio-V 800TVL is another Effio-V 800TVL, … Read more...

Multirotors R/C TX & RX

More Taranis Momentary Switches

July 14, 2015 by Adam

One momentary switch not enough on your Taranis radio?

It’s very straightforward to fit different switches to the Taranis to suit your own requirements.

First, undo the Philips heads screws … Read more...

Antennas Multirotors R/C TX & RX

Another Taranis Antenna Modification

July 7, 2015 by Adam

This modification was inspired by an article on BoltRC’s blog about replacing the Taranis’ in-built antenna with an SMA jack, which then allows connecting different, higher gain, antennas.

With the … Read more...