UKRAA promotes the science of radio astronomy and all branches of radio astronomical research by designing, manufacturing and selling radio astronomy equipment for amateur astronomers.

UKRAA  is pleased to announce that a 10GHz Signal Source is now available to purchase. It is compact and easy to use with just a single push button to operate it. At the heart of the signal source is an HB100 Doppler Radar Module which generates a steady 10GHz signal that can be detected by a satellite dish. The signal source has a basic application for testing that your dish is functional but can also be used to determine the signal strength profile of your dish and identify any problems in your signal chain, particularly with cabling.

UKRAA is pleased to announce that we have a stock of 6m band Moxon antennas suitable for meteor detection. It can be used with the new 50MHz beacon being developed for deployment in the UK midlands which should be receivable over most of the UK. It is also suitable for use with the BRAMS meteor beacon in Belgium.

A presentation was given on the planned UK meteor transmitter at the BAA RAG online conference held on 16th October 2021. Details are on the BAA website.

The design with Moxon elements gives a very short boom length, an excellent front/back ratio of more than 30 dB and a large bandwidth. Another benefit is the 50Ω design, which avoids the use of a lossy balun as transforming element, the feed line being connected direct to the antenna.

The small weight of only 3 kg makes this antenna also suitable for other activities such as DX-peditions.

UKRAA is pleased to announce that the first batch of our new cosmic ray muon detectors will soon be available for sale on our website. We launched the detector at the Practical Astronomy Show in Kettering on Saturday where it generated a lot of interest.

We will be introducing three versions of the detector plus an enclosure:

  • A kit for self-assembly. This involves the soldering of small surface mounted devices (SMD). £129
  • A part assembled kit. All the SMD components are assembled leaving the larger components to be soldered and assembled. £139
  • A finished device. This will be tested and working with the operating software loaded. £164
  • An extruded aluminium enclosure suitable for a single device. £23

The kits include all the components including a polished drilled and tapped 5cm x 5cm x 1cm scintillator block. This block is BC-412 grade scintillator material which is optically matched to a large 6mm X 6mm silicon photo multiplier (SiPM) chip. This gives a 25cm3 collecting volume. Using a solid-state detector eliminates the high voltage needed for vacuum tube GM detectors and also gives six times the detection volume.

As supplied the detector will detect β, ϒ, and cosmic muons. To eliminate the random β and ϒ two detectors are required working in coincidence mode. Muon events are output as a CSV file on a micro-SD card or can be connected to a PC via USB.

A discount of 7.5% will be applied to purchases of two or more detectors.

For ongoing support there is a forum - https://groups.io/g/muondetector/messages where discussion, questions and ideas can be shared.

Please contact us on This email address is being protected from spambots. You need JavaScript enabled to view it. for more information and to enquire about ordering.

The UK Radio Astronomy Association was established in 2008 as a registered charity (registration no 1123866) by the British Astronomical Association’s Radio Astronomy Group (RAG). UKRAA’s objectives are to promote the science of radio astronomy and all branches of radio astronomical research.

UKRAA is a not for profit business. Any surplus income funds the development of new products and our outreach activities. To keep our prices low UKRAA relies on the contributions of volunteers. We need more volunteers who can contribute in these areas of expertise:

  • Precision wood working to make up antenna kits and assembled antennas.
  • Machining and mechanical assembly to make up the enclosures.
  • Electronic assembly both through-hole and surface mount components.
  • Software development.
  • Digital and analogue circuit design and PCB layout experience.
  • IT and Website support.
  • Writers for articles and manuals Stock control, book keeping and customer service.

Please contact me at This email address is being protected from spambots. You need JavaScript enabled to view it. or This email address is being protected from spambots. You need JavaScript enabled to view it.

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