Search found 125 matches

by 13dka
Sat Apr 22, 2017 10:35 am
Forum: General
Topic: qms and qmr
Replies: 1
Views: 361

Re: qms and qmr

Quick Memory Save and Quick Memory Read. A volatile single frequency memory slot to complement your 2 VFOs.
by 13dka
Tue Mar 21, 2017 12:09 pm
Forum: General
Topic: Interference identification?
Replies: 37
Views: 5513

Re: Interference identification?

I always thought that VHF/UHF will be a last resort to enjoy the hobby if things go really bad on shortwave. Of course I was wrong. Until now, analog cable "only" caused interference on single channels, like these nice TV FM audio carriers in the 2m band coming from my neighbor's extremely...
by 13dka
Mon Mar 20, 2017 12:11 pm
Forum: SDRuno
Topic: Version 1.04 and VErsion 1.12
Replies: 5
Views: 1399

Re: Version 1.04 and VErsion 1.12

It looks like the Atom x5-based slate caused the trouble with SDRuno. I'm currently trying another tablet/convertible (12.2", i3, active pen support) and the SDRuno GUI plays nice with it (and bandwidth/decimation/zoom doesn't cause stutters). However the biggest problem is that SDRuno needs a ...
by 13dka
Fri Mar 17, 2017 10:24 am
Forum: SDRplay related
Topic: Sensitivity specification for RSP2?
Replies: 2
Views: 958

Re: Sensitivity specification for RSP2?

The only related figure I know is the theoretical noise floor of -132dBm (but without specifying a corresponding bandwidth IIRC). The actual noise floor should be around that number tho (got corresponding levels at a very QRM-quiet spot), AFAIK it should be possible to translate "noise floor&qu...
by 13dka
Thu Mar 16, 2017 11:46 pm
Forum: General
Topic: Interference identification?
Replies: 37
Views: 5513

Re: Interference identification?

Heinrich I tried to reply to your PM but it seems you have opted to no receive PMs from other members. Not important though. The pulses are still gone but I have a new neighbor who obviously got his TV moved into the apartment now, it's "only" narrowband muck every few 100kHz but still - w...
by 13dka
Thu Mar 16, 2017 11:30 pm
Forum: SDRuno
Topic: Version 1.04 and VErsion 1.12
Replies: 5
Views: 1399

Re: Version 1.04 and VErsion 1.12

On my i7 laptop I never had any performance issues with SDRuno 1.12, today I'm trying some "convertible" tablet with Win10 and an Atom x5 something CPU and made some (kind of) unexpected observations re dropouts: - in Low IF mode, 8192k sample rate/decimation 4/1536k BW is giving me dropou...
by 13dka
Wed Mar 15, 2017 7:27 am
Forum: General
Topic: Interference identification?
Replies: 37
Views: 5513

Re: Interference identification?

The pulses are gone this morning, I just don't know for how long. Trying to locate the source using a portable turned out to be quite a challenge and I failed miserably at it, that the interference consists of pulses didn't make it any easier. Too bad we don't have anything like class action lawsuit...
by 13dka
Wed Mar 15, 2017 6:41 am
Forum: General
Topic: How to get rid of phantom signal from SDR?
Replies: 2
Views: 840

Re: How to get rid of phantom signal from SDR?

When ever I open my SDR the station it was last tuned to always has a phantom signal stuck on that location on the spectrum. When you tune up and down that signal always remains at that spot. Really annoying. You're in 'Zero IF' mode. What you see is the DC spike that remains fixed on the LO freque...
by 13dka
Mon Mar 13, 2017 7:54 pm
Forum: General
Topic: Interference identification?
Replies: 37
Views: 5513

Re: Interference identification?

Well this thread must be jinxed...I enjoyed mostly unharmed reception until this weekend but now... :( ...exact 1 second pulses from 0 to 10 MHz and some dense muck between 2 and 3 MHz... interference_since_20170310.jpg ...level-wise centered at 5 MHz (check the faint peak hold line on the spectrum ...
by 13dka
Sun Mar 12, 2017 3:08 am
Forum: General
Topic: Interference identification?
Replies: 37
Views: 5513

Re: Interference identification?

Oh, thank you. That makes sense: we've had a new neighbour move in recently. Looks as if I'll just have to put up with it. :( I think what you see there on the screenshots (thanks for them, nice examples I may refer to in future discussions!) is an idling PLC modem. In other words, it could get mor...

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