Search found 6 matches

by hfaero
Fri Sep 30, 2016 1:04 am
Forum: RTL-SDR Discussion
Topic: LNA
Replies: 5
Views: 5864

Re: LNA

An LNA will require power. What instructions came with the LNA? It should require either (nominally) 5v from either a USB, battery or adapter source or it can get its power from the RTL-SDR device via the Bias-T (nice, no cables) if the LNA supports that. I'm not sure how you would turn on the Bias-...
by hfaero
Wed Aug 31, 2016 8:42 pm
Forum: RTL-SDR Discussion
Topic: Version 3 Dongle
Replies: 8
Views: 7757

Re: Version 3 Dongle

One way to find out, back up the rtl_tcp.c file, then make the change as per the rtl_fm.c file (if they exist in rtl_tcp.c), rebuild the programme and test.
by hfaero
Mon Aug 29, 2016 3:21 am
Forum: Troubleshooting Help
Topic: SDR USB works in Windows but not Linux - NooElec NESDR SMArt
Replies: 5
Views: 7158

Re: SDR USB works in Windows but not Linux - NooElec NESDR S

Using the default port of 1234 never worked for me so I set rtl_tcp to run using the -p switch and told it to go with 8081: rtl_tcp -a 192.168.1.xx -p 8081 Then configure your firewall from the RPi if you have one running and I found my router port forwarding needed set as well, and then set SDR# to...
by hfaero
Sat Aug 27, 2016 9:21 pm
Forum: RTL-SDR Discussion
Topic: Version 3 Dongle
Replies: 8
Views: 7757

Re: Version 3 Dongle

Brilliant, worked a treat! Command was: [email protected]:~ $ rtl_fm -f 8867000 -M usb -E direct -p -1 -s 12k | sox -t raw -r 12k -e signed -v 2 -c 1 -v 2 -b 16 - hf1test.wav & and the return was: [email protected]:~ $ Found 1 device(s): 0: Realtek, RTL2838UHIDIR, SN: 00000001 Using device 0: Generic RTL2832U OEM Found...
by hfaero
Thu Aug 25, 2016 8:34 pm
Forum: RTL-SDR Discussion
Topic: Version 3 Dongle
Replies: 8
Views: 7757

Re: Version 3 Dongle

Thanks for the -E switch and I gave it a couple of goes using a command string like rtl_fm -E direct -f 1.548e6 -M am -s 192000 -r 4800 | sox -t raw -e signed -c 1 -b 16 -r 4800 - coast1.wav I got a significantly larger file for the duration than if I recorded an AM airband signal, 1.2Mb vs 322kHz f...
by hfaero
Wed Aug 24, 2016 8:39 pm
Forum: RTL-SDR Discussion
Topic: Version 3 Dongle
Replies: 8
Views: 7757

Re: Version 3 Dongle

OK, first posting but very familiar with SDR, dongles, Windows and Linux including RPi. I bought a v3 and tested the HF using SDR# and all wen much better than I thought ( https://hfaero.com/?p=3486 ), not bad at all. The next thing I want to achieve is to run the v3 off my RPi on HF signals (record...