radio and rf | Brian Dorey.com

HackRF One Shielded Case Installation

Posted Saturday 01 August 2015 12:19 Page View Counter 1114

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 helped to remove some of...

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HackRF One SDR EMI Shield installation

Posted Monday 23 March 2015 12:00 Page View Counter 1345

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. Approximately one...

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Cateye Micro Wireless Bike Computer interference

Posted Sunday 09 November 2014 19:46 Page View Counter 1283

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 road rides. We purchased...

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Mastervolt Soladin RF Filtering

Posted Thursday 04 September 2014 22:39 Page View Counter 1448

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 replacing the unscreened and...

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Powerpole Fused Distribution Board

Posted Wednesday 09 July 2014 15:07 Page View Counter 1667

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 fuses on each one. There...

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Variable RF Signal Sampler

Posted Thursday 16 January 2014 14:01 Page View Counter 1703

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 problems. It isn’t safe...

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Cental Heating Control via Windows Phone and Raspberry Pi

Posted Monday 10 June 2013 13:09 Page View Counter 1053

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 how the central heating...

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Kent Hand Morse Key Restoration

Posted Monday 29 April 2013 23:44 Page View Counter 763

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 way to try to learn morse with...

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Yaesu FT 817 Cat Control Headaches

Posted Wednesday 23 January 2013 10:49 Page View Counter 649

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 later. After struggling to...

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RF Shielding on a Mains Inverter

Posted Wednesday 19 September 2012 14:24 Page View Counter 564

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 mains output and also on the...

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