Search found 146 matches

by CaptainNemo
Mon Mar 20, 2017 10:32 am
Forum: General
Topic: RSP RFI
Replies: 8
Views: 13669

Re: RSP RFI

Thanks JMG for sharing with us this summary. There is a lot of post on this issue, I find your summary/report is well structured an full of interesting insights. I look forward to hear more hints from you. ------------------ What about the PC connected? I ever used a laptop, since I started this hob...
by CaptainNemo
Thu Mar 16, 2017 3:12 pm
Forum: General
Topic: Page of free sofware for SDR!!!
Replies: 3
Views: 6129

Re: Page of free sofware for SDR!!!

... downloaded the sigmira program and it seems I have finally found a way to listen to the digital signals on the sdr... If you find sigmira is not good as front-end (the support for sdrplay is "experimental" I'm afraid...) you can still use it as back-end. In other words: use a front-end like sdr...
by CaptainNemo
Wed Mar 15, 2017 2:45 pm
Forum: General
Topic: Interference identification?
Replies: 37
Views: 41345

Re: Interference identification?

Anyway, dear friends, let's put it in this way:
chasing unwanted signals is an other new flavor of our hobby ... 8-)

bye
by CaptainNemo
Tue Mar 14, 2017 10:23 am
Forum: General
Topic: Interference identification?
Replies: 37
Views: 41345

Re: Interference identification?

Well this thread must be jinxed...I enjoyed mostly unharmed reception until this weekend but now... :( ... The only thing I care about is "will it go away?". ... Did you try to lower the gain? Did you get the same pattern? ...the authorities... they had "more important work to do". In this era of e...
by CaptainNemo
Sun Mar 12, 2017 2:47 pm
Forum: General
Topic: Interference identification?
Replies: 37
Views: 41345

Re: Interference identification?

Could it be a PLC/PLT modem?
20170312_153154crop.jpg
20170312_153154crop.jpg (121.95 KiB) Viewed 10265 times
by CaptainNemo
Sun Mar 12, 2017 12:41 pm
Forum: General
Topic: Interference identification?
Replies: 37
Views: 41345

Re: Interference identification?

Thank you very much. It seems that I have this sort of noise but fortunately it is not so strong. That's probably the reason I never realized this was caused by a powerline modem. I just archived that as due to thunderstorm around. In fact I have more noise from other "local" sources: lcd/plasma tel...
by CaptainNemo
Sun Mar 12, 2017 11:03 am
Forum: General
Topic: Interference identification?
Replies: 37
Views: 41345

Re: Interference identification?

If I understand well, jpsa posted an image of an idle modem,
in other words those horizontal lines are a sort of hearthbeat to keep in synch the system.

Can anyone share here an image of a full operating modem? I mean, when there is data traffic?

Thanks in advance.
Gio.
by CaptainNemo
Sat Mar 11, 2017 4:40 pm
Forum: General
Topic: P25 Trunking
Replies: 2
Views: 7065

Re: P25 Trunking

I forgot to say... if you use the "old" sdr# build 1361 (+ sdrplay device controller 3.8.3) you can
use the DSD interface plugin for sdr#.

bye
gio
by CaptainNemo
Sat Mar 11, 2017 11:16 am
Forum: General
Topic: Interference identification?
Replies: 37
Views: 41345

Re: Interference identification?

The short answer is: I don't know. In the meantime we wait for a noise "guru" to answer... since the noise seems to be "local", have you tried to unplug from main all the electronic device you have at home? Take away all phones, tablets and so on? If you find the answer please share with the communi...
by CaptainNemo
Fri Mar 10, 2017 7:24 pm
Forum: General
Topic: P25 Trunking
Replies: 2
Views: 7065

Re: P25 Trunking

You can try with DSD+ (aka dsdplus). You need the following "set-up" (in synth): a front end software supporting sdrplay (e.g. sdr#) --> vb-cable --> dsd+ (btw: unfortunately sdr# do not support completely sdrplay, so, for example you cannot use useful sdr# plugin like "dsd+ plugin" nevertheless you...