SDRuno Smart Antenna Switch

The trouble with the SDRplay SDRs is they are so versatile I tend to use it in preference to any other receiver. With its huge range and the amazing facilities of the SDRuno software I am always grovelling under the bench changing antennas.

For this project I use an Arduino to read the current frequency using the CAT interface. The user can configure at which frequency the Arduino selects which antenna via suitable relays.

See the full details and the .ino file here:-

https://github.com/G4FEV/SDRUno-Smart-Switch

 

Hawk 2.6 Ace 941 ELE

• Hawk 2.6 Ace 941 ELE

Hawk 2.6 Ace 941 ELE

May 2020 when we are all locked down. Remembering more carefree times playing in the Sun.

Hawk 2.6 Ace

Hawk Ace

This year I have adopted a 1960s club rallying theme.

 

Click here for the full story and latest news.

Megajolt Data Logger with Arduino

After installing a PLX Wide Band o2 Sensor I wanted to try some long term data logging.

The Air/Fuel Monitor output is connected to the Megajolt Aux input and the Megajolt software does a great job of recording its output for logging and tuning purposes. 
I didn't want to drive around with a Laptop in the car so I built this Megajolt Data Logger based on an Arduino with SD card shield.

Click here for Arduino code and construction details.

100W VHF 80-170MHz RF Power Amplifier kit MRF186

Jon GM4JTJ has just built one of these kits. They are widely advertised on Chinese traders sites and seem a bargain. Clearly some enterprising person has recovered plenty XRF/MRF186's from old 900MHz mobile phone boards and is now offering a kit using these devices. How did it go? Are they any good? You can read how Jon got on by checking the link below.
http://g4fev.atspace.com/mrf186linear.htm

John Tojeiro Tojeiro Bristol

....First Wednesday of the month is Earls Barton Classic Car evening. Among the 800 or so classics I spied this VERY rare Tojeiro.  John Tojeiro built only a handful of cars before teaming up with AC to design the ACE which of course went on to Carroll Shelby for further development into the 289 Cobra. This Tojeiro Bristol (I think) looked fantastic with its perfect alloy body on a tubular steel frame. The front end design almost identical to the AC Ace. I understand John Tojeiro was paid £5 per car royalties for each Ace sold. Excellent sunny evening (which makes for tricky photography with the low sun) and all for £3 entrance fee.
My Hawk Ace project here http://g4fev.atspace.com/hawk2.6.htm