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Joined: Wed Sep 11, 2019 12:34 pm


Post by gm4upx » Wed Sep 11, 2019 7:22 pm


I am new to the forum and ATV; I have a Portsdown RPi and a LimeSDR mini so far. I am using SDRAngel and an Airspy mini for rxing.

Days have been spent trying to get to the bottom of the problem :roll: ; that's not a complaint, in fact I have learned a lot more that I would have.

Anyway, I have a simple " fix " for my problem and have attached a screenshot.

The only way I can get a decode is to manually adjust the centre frequency by a few Khz then return it to the original.

Would anyone like to hazard a suggestion on the cause of the " problem " ?

RX PC info - maybe a little old ?

System: Host: mx Kernel: 4.19.0-5-amd64 x86_64 bits: 64 compiler: gcc v: 8.3.0
Desktop: Xfce 4.14.1 tk: Gtk 3.24.5 info: xfce4-panel wm: xfwm4 dm: LightDM 1.26.0
Distro: MX-19beta-1_x64 patito feo August 25 2019 base: Debian GNU/Linux 10 (buster)
Machine: Type: Desktop Mobo: MICRO-STAR model: G31TM-P21 (MS-7529) v: 1.0 serial: <filter>
BIOS: American Megatrends v: 4.7 date: 07/28/2010
CPU: Topology: Dual Core model: Pentium E6600 bits: 64 type: MCP arch: Penryn family: 6
model-id: 17 (23) stepping: A (10) microcode: A0B L2 cache: 2048 KiB
flags: lm nx pae sse sse2 sse3 ssse3 vmx bogomips: 12267
Speed: 1600 MHz min/max: N/A Core speeds (MHz): 1: 1600 2: 1600
Vulnerabilities: Type: l1tf mitigation: PTE Inversion; VMX: EPT disabled
Type: mds status: Vulnerable: Clear CPU buffers attempted, no microcode; SMT disabled
Type: meltdown mitigation: PTI
Type: spec_store_bypass status: Vulnerable
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full generic retpoline, STIBP: disabled, RSB filling
Graphics: Device-1: AMD Cedar [Radeon HD 5000/6000/7350/8350 Series] vendor: Micro-Star MSI
driver: radeon v: kernel bus ID: 01:00.0 chip ID: 1002:68f9
Display: x11 server: X.Org 1.20.4 driver: ati,radeon unloaded: fbdev,modesetting,vesa
resolution: 1920x1080~60Hz
OpenGL: renderer: AMD CEDAR (DRM 2.50.0 / 4.19.0-5-amd64 LLVM 7.0.1)
v: 3.3 Mesa 18.3.6 compat-v: 3.1 direct render: Yes

LimeSDR mini/sdrangel
LimeSDR mini/sdrangel
sdrangel01.png (1 MiB) Viewed 1252 times

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