Search found 59 matches

by octave9
Thu Jun 01, 2017 9:48 pm
Forum: New Users' experiences
Topic: Majorly disappointed so far...
Replies: 3
Views: 732

Re: Majorly disappointed so far...

If you've still got those transceivers - you could run low power into a dummy load and compare results on your SDRs. I would expect SDRUno to easily show a local signal that strong without any antenna connected (but try some wet string as well if it doesn't) and it would be obvious on the waterfall/...
by octave9
Tue May 30, 2017 8:51 pm
Forum: New Users' experiences
Topic: Operation Difficulties
Replies: 5
Views: 841

Re: Operation Difficulties

I wondered about the absolute beginner level and where to start trying to explain analogue Radio to those who have only known the digital age. You've got a head start on them, at least, having used an AM radio :) One of the problems with receivers which cover a wide section of the spectrum is that s...
by octave9
Tue May 30, 2017 7:39 pm
Forum: SDRplay related
Topic: GNU Radio
Replies: 1
Views: 356

Re: GNU Radio

Had some luck yesterday getting GQRX working, so I thought I'd try osmocom_fft. Seems OK as can be seen in the attached image. I tried a few options for the antenna, but haven't seen any difference. I started it like 'osmocom_fft -a sdrplay -f 92.7M -W -A 2' There's a strong BBC Radio 4 transmission...
by octave9
Mon May 29, 2017 11:11 am
Forum: SDRplay related
Topic: Raspberry Pi 2 + SDRplay: Setup Guide?
Replies: 8
Views: 5578

Re: Raspberry Pi 2 + SDRplay: Setup Guide?

There are two parts of the SoapySDR and the output you're getting suggests 'SoapySDRPlay' isn't installed. I pasted how that install went for me: john@Mint-18 ~/SDR_Dev $ git clone https://github.com/pothosware/SoapySDRPlay.git ./SoapySDRPlay Cloning into './SoapySDRPlay'... remote: Counting objects...
by octave9
Sun May 28, 2017 8:59 am
Forum: SDRuno
Topic: How to set the bandspread to neatly match a given ham band
Replies: 5
Views: 5289

Re: How to set the bandspread to neatly match a given ham band

Jon's original post was around the time of significant changes to the software, judging by the Release Notes, but they don't provide much of a clue. "RSP advanced window" was mentioned in the Version 1.03 (18 th September 2016) updates, but must have been removed for Version 1.1 (11 th Nov...
by octave9
Sun May 28, 2017 7:45 am
Forum: Code Corner
Topic: SoapySDR Error Compiling GR-OSMOSDR
Replies: 3
Views: 582

Re: SoapySDR Error Compiling GR-OSMOSDR

There's an 'uninstall' target in the SoapySDR Makefile, so you can use that to remove it. There isn't one for SoapySDRPlay, but I don't think it does much more than install a lib, which you could manually remove. This was how the install of the latter went for me: [100%] Built target sdrPlaySupport ...
by octave9
Sat May 27, 2017 2:35 pm
Forum: Code Corner
Topic: SoapySDR Error Compiling GR-OSMOSDR
Replies: 3
Views: 582

Re: SoapySDR Error Compiling GR-OSMOSDR

No idea really and my Linux PC doesn't get used for SDRplay, but there are bits of installs on the system and I did a 'locate osmosdr' which shows where there are some libs: $ locate osmosdr /lib/udev/rules.d/60-libosmosdr0.rules /usr/lib/x86_64-linux-gnu/libgnuradio-osmosdr.so.0.1.5git /usr/lib/x86...
by octave9
Sat May 20, 2017 1:53 pm
Forum: SDRplay related
Topic: No RX
Replies: 1
Views: 365

Re: No RX

I don't know of a schematic, but the 'RSP2 Conceptual Block Diagram' shows the Hi-Z antenna port connects to the MSi001 without the front end RF filters in circuit. Maybe try with an antenna connected to that port (and the antenna switch in 'MAIN' set to use it) with fingers crossed. I haven't looke...
by octave9
Sat May 06, 2017 1:34 pm
Forum: General
Topic: Extreme narrow band
Replies: 6
Views: 1165

Re: Extreme narrow band

I seem to get better visual resolution of CW signals in SDRUno AUX SP window, with Refresh Rate set to its fastest, FFT Avg on 1 and the 'Flat Top P401' FFT Window setting (it has its own SET dialog). Probably not good enough for your requirements though. Hard to see fast changes between dits and da...
by octave9
Sat May 06, 2017 2:18 am
Forum: General
Topic: Bothersome spurs
Replies: 4
Views: 861

Re: Bothersome spurs

With 10M Sample rate, IF AGC on, no antennas connected, antenna A selected and max (67.4dB) RF Gain - I see a couple of 'spikes' around 2.28MHz. With that gain they are only about -125dB and they drift around a little. Drop the RF Gain by one click and the lowest f one shoots up to about -110dB. Dro...

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