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radio and rf

01 AUGUST 2015

HackRF One Shielded Case Installation

In 2014 we purchased a HACKRF One SDR radio and quickly found that the receiver was being swamped with local interference from nearby transmitters and other equipment. We installed the optional HACKRF EMI Shield which...

23 MARCH 2015

HackRF One SDR EMI Shield installation

In September 2014 I pre ordered a HackRF One SDR radio from Passion Radio Shop and on the 13th March 2015 it arrived! Initial testing with the HackRF showed that it was being swamped with external RF from nearby transmitters....

09 NOVEMBER 2014

Cateye Micro Wireless Bike Computer interference

We recently purchased a pair of Specialized Crux E5 cyclocross bikes from Primera Sports in Bournemouth which we plan to use for longer road rides and some off road and keep our full suspension mountain bikes for just off...

04 SEPTEMBER 2014

Mastervolt Soladin RF Filtering

Following from the Mastervolt Soladin 600 Inverter RF Interference post about the major RF interference problems generated by the Mastervolt Soladin 600 tie-in mains inverter we have now resolved the RF interference by...

09 JULY 2014

Powerpole Fused Distribution Board

We use Anderson Powerpole connectors (http://www.powerwerx.com/anderson-powerpoles/) on our ham radios and other 12 volt accessories in the house and we had always used leaded plugs connecting to a central point with inline...

16 JANUARY 2014

Variable RF Signal Sampler

One of my hobbies is Amateur (Ham) radio and it is useful to be able to check the outputs on the radios transmitters to check that the signal is transmitting on the correct frequency and not causing spurious frequency...

10 JUNE 2013

Cental Heating Control via Windows Phone and Raspberry Pi

I have now finished working on the mobile app for the Raspberry Pi controlled central heating controller. This is following from the www.briandorey.com/post/XBee-Central-Heating-Control-via-Raspberry-Pi blog post which detailed...

29 APRIL 2013

Kent Hand Morse Key Restoration

I had been looking for a Kent hand key from eBay for some time as I plan to try to learn CW (Morse) to use with my Yaesu FT817 on the HF bands. As the Kent keys are around £100 new I thought that a used one would be a good...

23 JANUARY 2013

Yaesu FT 817 Cat Control Headaches

After treating myself to a new Yaesu FT 817 HF, 6m, 2m & 70cm transceiver, I also ordered a CAT to USB control cable from Radioarena (Yaesu USB Programming / CAT Cable for FT-100 / 817 / 857 / 897) which arrived 8 days...

19 SEPTEMBER 2012

RF Shielding on a Mains Inverter

The mains inverter we have for our solar system generates a lot of RF interference on our ham radio transceivers and also across the entire HF spectrum. The inverter body has plastic ends and very little filtering for the...

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