Search found 494 matches
- Mon Oct 16, 2017 8:28 am
- Forum: SDRuno
- Topic: Excessive CPU usage
- Replies: 4
- Views: 17717
Re: Excessive CPU usage
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...
- Sat Oct 07, 2017 10:40 am
- Forum: General
- Topic: RSP2 Band Pass not working?
- Replies: 5
- Views: 14476
Re: RSP2 Band Pass not working?
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...
- Fri Oct 06, 2017 6:04 pm
- Forum: SDR Antennas
- Topic: Antenna's
- Replies: 4
- Views: 20677
Re: Antenna's
There's no DC present on the output of the interface boxes that come with active antennas. There's a DC blocking capacitor that stops any voltage appearing there.
- Thu Oct 05, 2017 4:12 pm
- Forum: SDRuno
- Topic: Antenna Length.
- Replies: 2
- Views: 10041
Re: Antenna Length.
The wavelength at 1000 MHz (near enough) is 30 cm. For a quarter-wave groundplane, the length of the vertical element would be 30/4 = 7.5 cm. For a dipole, each leg would be 7.5 cm.
- Tue Sep 26, 2017 9:14 pm
- Forum: New Users' experiences
- Topic: RSP-2 with TS590SG
- Replies: 7
- Views: 24982
Re: RSP-2 with TS590SG
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: 5
- Views: 18862
Re: RSP-1 as a bat receiver?
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 ...
- Sat Sep 23, 2017 2:38 pm
- Forum: SDRuno
- Topic: SDRuno freezes
- Replies: 7
- Views: 21339
Re: SDRuno freezes
A similar problem is mentioned in this thread: http://www.sdrplay.com/community/viewtopic.php?f=7&t=2443 There seems to be a small bug in the antenna switching or gain control sections which can cause an 'out of range' error and a freeze. I believe the good chaps are looking into it and will sort it...
- Sat Sep 23, 2017 9:25 am
- Forum: New Users' experiences
- Topic: SDRuno Frustration
- Replies: 4
- Views: 16142
Re: SDRuno Frustration
The more time you spend with SDRUno the easier it gets, but I agree that some of the controls and settings are buried in places where you would not expect them. I think it would a big help to have the program initially start up with a ready-made screen layout so that new users wouldn't have to start...
- Mon Sep 18, 2017 8:18 am
- Forum: SDRuno
- Topic: Ideas for future Updates
- Replies: 33
- Views: 94092
Re: Ideas for future Updates
I'd just like to repeat my plea for separate MHz & KHz buttons. Entering everything as KHz is very confusing, especially when you get to VHF and above! So to be able to enter (say) 60 KHz using the KHz key and 456.123 MHz using the MHz key would be a Godsend. My Signal Hound uses this method - you s...
- Sun Sep 17, 2017 10:10 am
- Forum: SDRplay related
- Topic: RSP-2 antenna select via Device Control Panel?
- Replies: 10
- Views: 30531
Re: RSP-2 antenna select via Device Control Panel?
In my case it goes like this: Start SDRUno from cold. Press PLAY Enter (say) 450 MHz and select Ant A. Now press the 160m band button then select Hi-z. This more often than not causes reception to stop and the waterfall just shows vertical lines. Pressing STOP then PLAY corrects it and reception car...