Search found 51 matches

by dsalomon
Tue Oct 04, 2016 12:44 pm
Forum: General
Topic: How does SDRplay hold up in city enviornments?
Replies: 4
Views: 1576

Re: How does SDRplay hold up in city enviornments?

The filters in the RSP are definitely inadequate in a strong RF environment, especially those strong FM transmitters. I have one close to me as well. You need your own, good bandpass filtering in front of it. Re: the Flex-6500, I don't know the specs on its receiver, but I would also assume that it'...
by dsalomon
Mon Oct 03, 2016 1:31 am
Forum: New Users' experiences
Topic: SDRPlay Performance
Replies: 17
Views: 4031

Re: SDRPlay Performance

I meant to give you a few examples when I wrote my post this morning, but didn't have time - had to run out to do some errands. So, now that I'm back, I'd like to to add a little bit of info/details, take a look at these cards as a few examples: Typical USB expansion card: https://www.amazon.com/SED...
by dsalomon
Sun Oct 02, 2016 12:01 pm
Forum: New Users' experiences
Topic: SDRPlay Performance
Replies: 17
Views: 4031

Re: SDRPlay Performance

If you're running at a constant level of 60%-70%, you will get spikes to 100% from just about anything else you do, especially Firefox, which is known to be a resource pig at times. You should run this on something that stays level at no more than 20% when running the RSP. Also, it you're at 60%-70%...
by dsalomon
Thu Sep 22, 2016 2:06 pm
Forum: General
Topic: Airband
Replies: 7
Views: 2980

Re: Airband

The issue with imaging is very well known amonst ALL inexpensive SDRs of this type that do not have bandpass or other filtering built in. More expensive SDRs have bandpass and/or lowpass filtering built in (lowpass for HF type SDRs). It's also well documented that you NEED to put one or more filters...
by dsalomon
Thu Sep 15, 2016 1:52 pm
Forum: SDRuno
Topic: window positions not saved
Replies: 2
Views: 1307

Re: window positions not saved

To add a little detail about workspaces to sdrplay's comments... You can save multiple different workspaces. Each workspace saves which windows are currently open and their size and position. You don't have to click on JUST the workspace that is displayed in the workspace name field. If you just lef...
by dsalomon
Wed Sep 07, 2016 1:46 pm
Forum: General
Topic: SDRPlay / FM SCA decoding
Replies: 5
Views: 2932

Re: SDRPlay / FM SCA decoding

Look at this webpage: http://www.blackcatsystems.com/radio/sca.html

It contains all the information you need to learn how to receive SCA transmissions.
by dsalomon
Tue Sep 06, 2016 1:27 pm
Forum: General
Topic: SDRUno - setting bandwidth
Replies: 1
Views: 1179

Re: SDRUno - setting bandwidth

Just grab and drag each side of the demodulation window with your mouse. Do this in the smaller window that shows the signal, not the one with the entire spectrum. It'll be easier to see and grab the edges in that window.
by dsalomon
Wed Aug 31, 2016 12:52 pm
Forum: SDR Antennas
Topic: Antenna Separation
Replies: 4
Views: 3373

Re: Antenna Separation

BTW, the advantage of a limiter like I suggested rather than a switch that takes the radio offline is that you can monitor your own signal. This is especially helpful for digital work so you can ensure you're putting out a clean signal.

73 - David, AG4F
by dsalomon
Fri Aug 26, 2016 4:40 pm
Forum: SDR Antennas
Topic: Antenna Separation
Replies: 4
Views: 3373

Re: Antenna Separation

Another option is this: https://www.dxengineering.com/parts/dxe-rg-5000. It limits the RF level going into the receiver to safe levels.
by dsalomon
Tue Aug 09, 2016 1:07 pm
Forum: SDRuno
Topic: SDRuno frequency scrolling out of control
Replies: 2
Views: 1304

Re: SDRuno frequency scrolling out of control

When the system freezes, are you continuing to try to get it to respond by by the mouse, and/or scrolling the mouse wheel? From your description, it sounds like your system is freezing up, but storing your mouse scrolling movements. Then when it unfreezes, it feeds the movements back to the program,...

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