MWRS hosted a test for the Sydney ATV group, as they have lost their Lawson repeater and are trying to find another site. The initial test used a 9dBd 6-element Yagi, pointed SSW, and 20W FM. FM was used for convenience (equipment is easy to access). The Yagi was located on our tower, below the […]
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Tag: SDR
MWRS WebSDR Build Completed
The MWRS WebSDR is now online! After a year-long effort by generous volunteers, all the bits are connected together, a linear power supply has been built and the loop antenna is professionally installed. A huge thanks to everyone who has helped with this project, it’s great to see it online. Matt VK2RQ, Phil VK2BDF and Horst VK2HL helped […]
MWRS WebSDR Build – Part 3
It’s been a while since the last update – sometimes life gets in the way of radio projects! The WebSDR node has been progressing though – we have all 5 Softrock kits assembled and installed, and the SDR node is functionally complete. Unfortunately, my optimistic choice of a switchmode power supply turned out to cause spurious […]
MWRS WebSDR Build – Part 2
Our WebSDR build is progressing well, after the first installment we had finished the construction of 3 x Softrock RX III kits. These have all been brought together on the bench and compared to each other using SDR# and one of the Asus Xonar U7 sound cards. The first 3 units are working well and construction […]
MWRS WebSDR Build – Part 1
What is a WebSDR and why make one? SDR means “software defined radio” – and the basic premise is that instead of homing in on one signal using a classic receiver, you can sample a substantial “chunk” of radio spectrum and then do whatever processing you like with it using software (all of the demodulation/filtering etc is […]
July 2012 Lecture – Balint Seeber & Matt Robert – what you can do with
This months lecture was a little different to the usual. Mal (VK2TMF) brought along a great presentation by Balint Seeber and Matt Robert who discuss what you can do with Software Defined Radio. Balint runs the spench.net website and created the awesome RFMaps tool: Balint Seeber’s Aviation Mapper lecture. Whilst you’re at it, here is […]