Search found 47 matches

by Remon
Mon Sep 16, 2019 9:04 am
Forum: Signal Identification Help
Topic: Unknown data received in the Netherlands
Replies: 2
Views: 189

Re: Unknown data received in the Netherlands

Already looked there and listened to all audio samples before making this topic..
by Remon
Sun Sep 15, 2019 12:38 am
Forum: Signal Identification Help
Topic: Unknown data received in the Netherlands
Replies: 2
Views: 189

Unknown data received in the Netherlands

This signal could also be transmitted from another country because the current atmospheric conditions and my antenna setup:

https://vocaroo.com/i/s1bMv9yfLHrS

Image
by Remon
Tue Sep 03, 2019 9:30 pm
Forum: Signal Identification Help
Topic: How to identify the signal I received every second
Replies: 5
Views: 575

Re: How to identify the signal I received every second

I have a clock/thermometer that is generating the exactly same noise burst. It's affecting any receiver within a meter. Try moving you dongle and/or antenna.
by Remon
Sun Jul 21, 2019 12:38 am
Forum: Signal Identification Help
Topic: POGSAG like signal on 25.358Mhz
Replies: 4
Views: 1816

Re: POGSAG like signal on 25.358Mhz

It's most likely an on-site paging system, often used by hospitals.
by Remon
Mon Nov 05, 2018 12:53 am
Forum: Off-Topic
Topic: Finding a signal frequency Via type of antena
Replies: 1
Views: 14653

Re: Finding a signal frequency Via type of antena

In which country or state do you live? You can try to figure out what horns are used, what their size it is and determine the yagi element sizes. Then use an online yagi calculator to find out the frequency.
by Remon
Wed Oct 10, 2018 10:44 pm
Forum: Signal Identification Help
Topic: Unknow signal
Replies: 9
Views: 22789

Re: Unknow signal

It's Mobitex: https://en.wikipedia.org/wiki/Mobitex I got dozens of these signals in my area: http://i66.tinypic.com/qnkbac.png About 15 years ago police and ambulances used this system for the data terminal+screens in their cars... It was all clear text back then when I used a 2-level modem on a sc...
by Remon
Wed Oct 10, 2018 10:13 pm
Forum: Signal Identification Help
Topic: Is this a weather balloon?
Replies: 2
Views: 14596

Is this a weather balloon?

I found this strong signal in the low 400MHz's:

Image

Audio:

https://instaud.io/2MLh
by Remon
Mon Sep 17, 2018 9:23 pm
Forum: Signal Identification Help
Topic: Unknown high pitch continues beep with data bursts
Replies: 3
Views: 15712

Unknown high pitch continues beep with data bursts

Received in the Netherlands while there are pretty good atmospheric conditions:

Image

Audio:

https://instaud.io/2H3Z
by Remon
Tue Aug 28, 2018 3:36 pm
Forum: RTL-SDR Discussion
Topic: Internal gain vs external amplifier
Replies: 3
Views: 2538

Internal gain vs external amplifier

Is it worth buying a Jim M75 amplifier or will I get similar results with the internal gain?
by Remon
Wed Aug 22, 2018 1:08 am
Forum: RTL-SDR Discussion
Topic: Popping noises
Replies: 5
Views: 3000

Re: Popping noises

I can test it but I can tell you in advance that rtl_tcp use much less CPU load than SpyServer. My Raspberry Pi 3B+ is idling 98.8% at all times.