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VK3NX





Australian Amateur Radio STation



S.T.a.r.



Star is an acronym for Software Transmitter and Receiver.



It was developed by Peter Rhodes (G3XJP) several years ago. The original project articles appeared in Radcom and were a full description of building an HF multiband transceiver. I decided to tackle this project once I came across it in 2009 and thanks to boards produced professionally by VK3PE (Glenn), a steep learning curve and the enormous help from the STaR community, I was able to complete my STaR transceiver without too many difficulties. Anyone interested in S.T.a.R. are directed to do an internet search on the topic. This project is now somewhat "old" and I would suggest that it may be difficult to replicate this project unless you had already previously sourced the components. Although technology moves at a rapid rate, Peter has continued to develop the "code" at the heart of this transceiver. Having owned the "flag ship" transceivers from Kenwood, Icom and Yaesu I can confidently state that the STaR's receiver still outperforms all in side-by-side comparisons especially when dealing with weak signals. For this reason I still use my STaR routinely on HF


Over time I have built 3 separate STaR trasnceivers. The core DSP unit and STaR topology has remained the same, however the implementation in construction and as final standalone transceivers has varied as seen in my STaR pictures


STaR-1
STaR-2
STaR-3

STar -1



STaR -1 was built with the "PCB ENCLOSURE" method for all the modules. A CODAN 100 Watt amplifier was used and the transceiver was designed with low level signal routing for use with my VHF & above transverters.



STar -2



STaR -2 was built with commercially fabricated COMBO BOARDS and utilising the TrxAVR graphical display. Many thanks to Glenn (VK3PE) and Ian (G3VPX). The enclosure was designed with a mixture of an Aluminium "skeleton" and PCB board stock for enclosures.

The amplifier used is a module from an IC-756. Producing 100W +

As with STaR-1 , extensive shielding and decoupling was implemented to achieve the best performance.



STar -3



With my experience having built STaR-1 and STaR -2, in 2018 I decided to build my 3rd STaR.


STaR-3 incorporates:

-Combo Boards

-TrxAVR

-TFTA touchscreen

-Surplus CODAN amplifier block 100W +

- IF output for Panadapter / External SDR monitor /Sub Receiver


This transceiver project was finished in 2019.



VK3NX