Hello, my name is Mark (W5TSU). I became a hame in Feburary of 2007 as KD5AMB (tech). I now have a general class license. (Working on my Extra. :-) I enjoy electronics and amature radio. This website, is my way of keeping notes and sharing with others. If you want to ask questions you can email me at ‘mark@w5tsu.net’. My primary intrests are Software Defined Radio (SDR) and antennas. I’m an open source software eveloper. »
The Hermes-Lite 2 (HL2) is a low-cost, open source HF SDR transceiver. This is a truly fantastic radio it competing head to head with the Flex radio. The whole project – hardware and software – is fully open source, led by Steve Haynal (KF7O). Although this radio has been around for years the community support is poor. My hope is this post will help document what I’ve found for my own use and maybe help others. »
Not your father’s radio! I’ve started with a couple of new radios for this round of Ham Radio projects. A Radioddity G90 and their GD-88. As a fan of SDR, I’m using digital modes with both. FT8 on the G90 and DMR on the GD-88. I love the way FT8 cuts through the noise when signal are low. But I can’t yet say I’m a fan of DMR. It seems like a radio build by a government committee that didn’t know anything about it. »
If you need to program your HT for a local area, look no feather than RepeterBook.com. After creating an account, you can build a list of repeaters based on your location and export it to many common file formats, including Chirp and CSV. W5TSU »
For the W5TSU.net:8030 receiver I build a broadcast band filter. This should front end overload and intermod created by these stations and allow for better Ham band receiption. I also wanted to learn how to build my own coils. I found a design at the vk3il blog. This filter was modeled with the ELSIE (free version). It is a 7-pole Chebychev filter with cutoff frequencies of 1.7MHz. I started by winding some coils from 22, 26 and 30 awg magnet wire. »