Search found 238 matches
- Tue Oct 24, 2017 11:31 am
- Forum: General
- Topic: Another odd signal (or signal-like phenomenon)
- Replies: 4
- Views: 484
The magic of SDR that you can see these things as well as hear them. Indeed. On a conventional receiver, you'd just hear a 'blip' as the signal passed through the passband, but on a waterfall you can see what it really happening. You can also see all the image responses and other spurii of your rec...
- Sat Oct 21, 2017 11:47 am
- Forum: General
- Topic: Odd signals and other unusual patterns
- Replies: 9
- Views: 662
That pattern of spikes looks like the type of buzz I get from a nearby plasma TV. If you listen in AM you may hear a sharp buzzing sound.
It works reliably here. One mistake people make is to have the tuned frequency and the LO frequency the same, which corrupts the signal. The other possibility is that the signal is fading in and out and the sync is lost.
- Tue Oct 17, 2017 8:46 am
- Forum: SDRuno
- Topic: SDRuno RSP2pro Frequency entry problem
- Replies: 2
- Views: 244
Surely there can be only one decimal point? For instance 150.123456 MHz doesn't need any more points , it is correct as it stands. Sorry if I am misunderstanding.
A couple of years ago my Win7 laptop started doing this. It would start up fine but within a few moments everything was running slowly and it was also running hot. To cut a very long story short, it turned out to be a well-known W7 bug which caused the PC to constantly search for updates. The cure w...
It's also worth bearing in mind that the noise floor of the 8 bit dongles is much higher than the 12-bit SDRPlay. The dynamic range of a cheap dongle will be around 48 dB, whereas the SDRPlay will manage 72 dB. The ghost signals may well be there on your RTL dongle, but the poor dynamic range is hid...
- Tue Sep 26, 2017 9:14 pm
- Forum: New Users' experiences
- Topic: RSP-2 with TS590SG
- Replies: 7
- Views: 793
I would say it's normal to see a strong signal on your TX frequency. If you have 100 watts going out and a sensitive receiver at the same location (even without an antenna connected), I'd say it was inevitable. I can't explain why you saw no signal before though.
- Mon Sep 25, 2017 11:14 pm
- Forum: SDRplay related
- Topic: RSP-1 as a bat receiver?
- Replies: 3
- Views: 697
I've built a few bat detectors and the difficulty is always the transducer. Some electret mics will reach up to about 20+KHz but most bats operate above this. Then there are the cheap 40KHz transducers that work well but their response is quite narrowband and they only pick up in the range of maybe ...