DISCLAIMER

DISCLAIMER: I have no association with UVB-76 station, neither do I have any clue what is the content I am relaying. I can only assure, that the signal is received on 4.625MHz AM-modulated 900km NW from supposed origin and retransmitted unaltered. In no way can I guarantee this service, nor be considered responsible of any content re-transmitted. The only purpose for this relay to exist is because lot of people who do not have equipment or are located too far from station seem to be interested about listening to it. Should the UVB-76 station- or transmission content owners feel violated in any way, please contact me at uvb76.repeater@gmail.com and we will work it out.

Note, that because of shortwave radio signal propagation specifics the station can be more or less reliably received from around 4pm to 6am GMT on summertime. It is almost 24h audible during the winter, with short "skip-zone" blank-out around 6pm GMT.

The USB feed is considered as main source of audio today, as the voice messages are much better audible there than on the AM stream. However, the buzzer sound from the AM stream is somewhat more pleasant to listen at, so both feeds are kept simultaneously.

Tuesday, February 15, 2011

SDR MK1 Housing

SDR MK1 housing just arrived! Big thanx to my brother, who did the CAD drawings and organized the manufacturing!

As a result, SDR MK1 is going to live inside 110x80mm solid milled aluminum block! It costs 70EUR to manufacture, but somehow it feels like money well spent! :)

It seems, that the SDR MK1 is more and more becoming an open source product of a sort, where one can build it totally on his own, order a bare PCB, order a PCB with some (difficult to assemble) components mounted and rest in a anti-static bag, order an populated board without an housing or have a complete radio delivered.

However, first I have to get the prototype running! Currently the PCB component placement is done and about 70% of routing is finished. I am still working with only two layers, so there is hope, but at least one area looks really tough at the moment (thank you National Semiconductor, for positioning three different power buses and internal analog filter caps all at the same side of the 128pin housing!!!), so it may end up with four layer board instead. 

Here are some pictures of the housing. Note, that it still has to go through glass-balling and anodizing to get this satin Apple-like look. At the moment it is as it came from the milling.





2 comments:

  1. Sounds like you almost have a solid build ready to be manufactured and sold. Get your paypal accounts ready, I am sure some people are going to want them. I know I am interested.

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  2. SDK MK1 is a device that is launched recently. A software development kit is used in various applications. Good detail of the device is given in this blog. All the posts published in this blog very also useful. They have the details about the latest technological developments and new additions. Each of them is stated along with its uses and applications. So people are able to better know about them. Students who have taken electronics as their main can use this as a reference. Essays on some topics can be written from the data given in this blog. I really appreciate your effort to keep the readers updated with the latest data. I hope readers will further get to read more such data in your blog. Keep your blog updated with the latest data. In colleges, students are asked to submit a number of essays from time to time. They will find it very difficult to finish their works on time. Too many works cause them to get very little time for their studies. Another problem is that time obtained for non-academic works is also very less for them. All these factors have ultimately led the students to develop conditions like stress, tension etc. Students do not get adequate time to relax their minds. Earlier students were able to relax their mind and body by playing games and doing other cultural activities. But today, all these things have changed. These problems have even affected their family relations. They do not get enough time to spend on their family. That’s why chances of talking with family are very rare. They shrunk to their own world. Anyways few of their problems could be solved by taking the help of the Cheap Essay Writing Service . Students can depend on essay services for some of their essays if they have many essays to complete.

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