Search found 59 matches

by aurgathor
Sun Jun 03, 2018 7:54 am
Forum: RTL-SDR Discussion
Topic: Filter Amp for 800 MHz
Replies: 4
Views: 1862

Re: Filter Amp for 800 MHz

I have a feeling that you may have a hard time finding a steep enough filter for those frequencies.

I would go for a directional antenna such as a Yagi oriented in a way that the cell tower would be in its "blind spot"
by aurgathor
Fri Jun 01, 2018 4:41 am
Forum: RTL-SDR Discussion
Topic: V3 dongle overheating?
Replies: 18
Views: 11765

Re: V3 dongle overheating?

I have seen USB hub power supplies that output 5.3 - 5.5V, and that could be part of the reason, especially if the V3 uses an analog voltage regulator.

You can get a USB current and voltmeter for under $10 from eBay - a great tool to troubleshoot certain USB issues.
by aurgathor
Wed May 30, 2018 6:05 am
Forum: Off-Topic
Topic: SpectrumSpy with Airspy HF+
Replies: 4
Views: 4089

Re: SpectrumSpy with Airspy HF+

The last two works OK with my RTL-SDR even if they may have some minor issues. It was pavels' program that I've tried before, and that one did not work, and it is still not working on my system.
by aurgathor
Sat May 26, 2018 5:29 am
Forum: RTL-SDR Discussion
Topic: Is my RTL-SDR v3 dead?
Replies: 6
Views: 3095

Re: Is my RTL-SDR v3 dead?

Good question; however, I did not try that. I presume it would, but I can't be certain without trying it. Luckily, I had some older restore points lying around.
by aurgathor
Sat May 26, 2018 12:26 am
Forum: RTL-SDR Discussion
Topic: Is my RTL-SDR v3 dead?
Replies: 6
Views: 3095

Re: Is my RTL-SDR v3 dead?

I thought the same thing a while ago, but since I have 2 cheap SDRs, both of them breaking at the same time is exceedingly unlikely. Turned out that a few weeks ago Windoze installed some Realtek drivers and that broke the realtek based SDRs -- they just would not work any more. I had to do a system...
by aurgathor
Fri May 25, 2018 7:23 pm
Forum: Off-Topic
Topic: SpectrumSpy with Airspy HF+
Replies: 4
Views: 4089

Re: SpectrumSpy with Airspy HF+

I see. That's a good reason, although they could've just throw up a dialog box warning the user that scanning may take some time. So lemme ask this a little differently. Would a cheap RTL-SDR be suitable for scanning 5 - 10 MHz or so? (since I got two of them, including the v3) If yes, what program ...
by aurgathor
Fri May 25, 2018 1:34 am
Forum: Off-Topic
Topic: SpectrumSpy with Airspy HF+
Replies: 4
Views: 4089

SpectrumSpy with Airspy HF+

I'm trying to use the latest release of SpectrumSpy with the AirSpy HF+, but all I get is: "Cannot open AirSpy device" :mad: I tried to mouse around, but I could not find any place to select AirSpy HF+ instead of AirSpy. I also looked at the config file, but I didn't see any place for the device nam...
by aurgathor
Thu May 24, 2018 4:12 am
Forum: Other SDR Devices
Topic: Airspy HF+ with a USB hub
Replies: 4
Views: 16040

Re: Airspy HF+ with a USB hub

Hubs should alleviate the issues of longer cables as long as each segment is 15ft or less. In any case, after some more testing this seems to be a case of a real or perceived overcurrent by the hub. 1. looks to me the HF+ is tripping the overcurrent protection of the hub, but I don't know if the hub...
by aurgathor
Tue May 22, 2018 3:12 am
Forum: Other SDR Devices
Topic: Airspy HF+ with a USB hub
Replies: 4
Views: 16040

Re: Airspy HF+ with a USB hub

Extension cables are a little different since they have a length limit (15ft) plus some possibly significant voltage drop due to the HF+'s nearly 400 mA current consumption. In any case, the cable between the hub and the PC is 10ft long, and the cable between the hub and the HF+ is 3ft. Will look in...
by aurgathor
Mon May 21, 2018 4:34 pm
Forum: Other SDR Devices
Topic: Airspy HF+ with a USB hub
Replies: 4
Views: 16040

Airspy HF+ with a USB hub

Instead of a direct connection, I'm trying to plug the HF+ into a USB hub (a Radio Shack 4-port USB 2.0 hub with a 2.5A PS) and Win10 keeps telling me: "The last device you connected to this computer malfunctioned, and Windows does not recognize it" The HF+ works fine when connected directly to the ...