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38 results from messages in perseus_SDR

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  • With the demise of Windows XP, I finally switched to W7. Upon doing so, my Perseus and Perseus Server stopped handling inbound UDP. I'm sure the solution to this has been posted but it didn't jump out at me. I already have the FW turned off but there seems to be more. What's the trick? -Jim WA2ZKD
    Jim Lill Apr 14, 2014
  • One way to damage first active RF device is via RF overload. This generally happens when you have a passive antenna attached and a TX is nearby. If you have an active antenna attached, its amplifier may suffer. I have a schematic for a protection circuit which I'll post soon. Jim WA2ZKD
    Jim Lill Mar 2, 2014
  • The ingress of Noise and other intererence is always an issue with any HF radio. Potential sources include: - PC - PC Monitor - Laptop backlight Their power supplies and internal circuits can all cause "buzz" Other sources include: - CFL - home media stuff - routers The list seems endless Use a cheap AM Portable radio to find sources of noise
    Jim Lill Sep 8, 2013
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  • I have been running the client and server for weeks without any issues. --- In perseus_SDR@^$1, Mauno Ritola wrote: > > Hi Clem, > what kind of instability have you noticed? I haven't noticed any. > > 73, Mauno >
    James Feb 2, 2013
  • Don't forget there are 2 components to any SDR system 1 - the hardware 2 - the software Simon Brown's efforts are an excellent move forward on #2 for a number of SDR, not just the Perseus. Many things "we" would like to see different on a box-stock Perseus system will now get better. The RF hardware performance of the Perseus which is part of #1 above, remains top notch, one of...
    James Jan 21, 2013
  • So hopefully this means a bigger network of servers worldwide!
    James Jan 21, 2013
  • That's good news and in my post I should have clarified that the time I mentioned includes shipment and getting through customs etc. Of course, as I am in USA, it takes longer than for owners in Europe. --- In perseus_SDR@^$1, "CESARE" wrote: > > Hi > > You can send in Italy. > > When I receive a Perseus burned, in the same day I repaire it. > > Cesare IV3MUR >
    James Jan 13, 2013
  • That is certainly the most straightforward way but expect 3-4 weeks for repair. I repaired mine locally as I was lucky enough to access to surface mount repair tools. So equipped, it is an easy fix for a repair operator. --- In perseus_SDR@^$1, Werner Karn wrote: > > I would send it to Italy for repair >
    James Jan 13, 2013
  • same failure as I described in a post a few weeks ago --- In perseus_SDR@^$1, "dl4raj" wrote: > > > i purchased a used perseus and i have done some tests now. I >applied a signal 10MHz/-60dBm (50 ohm) at the antenna input and the >perseus software displays it as -100dBm. Why? > > Sounds like a dead preamp. > Where did you buy the used Perseus from? > Perhaps from a seller in the UK...
    James Jan 11, 2013
  • but what are the attenuator relays? --- In perseus_SDR@^$1, pd0psb@^$2.. wrote: > > They are Meder M505 instrumentation grade reeds. > Good for several millions of operations. >
    James Jan 7, 2013