FMPx link error = -5?

[leegam]

My old DSD ver 1.101 works fine but I've hit a wall trying to get plus working. I'm using a RTL- 2832 dongle
Downloaded a new copy of Plus. Ran 1r.bat to start and next FMPx-24 cc.bat. program starts I see the spectrum
monitor. But plus always reports a " FMPx link error -5. Can't get past this What gives?

 

[jtwalker]

You ran FMP24-VC ?

 

[mtindor]

My old DSD ver 1.101 works fine but I've hit a wall trying to get plus working. I'm using a RTL- 2832 dongle
Downloaded a new copy of Plus. Ran 1r.bat to start and next FMPx-24 cc.bat. program starts I see the spectrum
monitor. But plus always reports a " FMPx link error -5. Can't get past this What gives?

If you downloaded the new free Public Release version of Fast Lane from the website:

1. download / unarchive the entire contents to a new directory with nothing in it
- good options are c:\dsdplus or c:\dsdpluspublic or c:\users\<username>\desktop\desplus

2. Run FMP24-CC.bat and 1R.bat

You should not have to do anything else. Don't edit any batch files or anything. Just run the two batch files mentioned in step #2.

 

[jtwalker]

You ran FMP24-VC ?

Whoops, I meant to ask if you ran FMP24-CC.bat?

 

[leegam]

You ran FMP24-VC ?

Thanks guys. I installed the public download in a new directory. Ran the 1R bat along with FMP24-CC. Still no link to my dongle. it's an RTL-2832. Next I tried 1r bat along with FMP24-VC. Still no good Finally Ran 1r bat with the FMP-24 application file. The dongle spectrum came up but still got an link error -5 from DSD. Next I shut off windows defender fire wall to see if this worked. No good Finally deleted the DSD-Plus directory power down the computer, powered back up and installed a new copy of DSD. Same results. I intermittently get a prompt on start up that the dongle is in use when starting FMP24-CC. I'm wondering if I should try to do an install on a completely different PC?

 

[gary123]

try editing your FMP24 to this. The no link indicates the DSD program is looking for a different device ID. Change the freq to what you want.

start FMP24 -o7654 -f855.5625 -b12.5 -g42.9
timeout /t 6
call dsdplus -i7654 -v3 -O NUL

 

[dave3825]

Post the contents of your fmp24-cc.bat and 1R.bat. Both ports listed should match. Whether its 20001, 20002 or 7654, they need to match.

Post contents of cmd windows when you start fmp24-cc.bat and dsdplus

C:\Users\Preferred Customer\OneDrive\SDR\DSDPlusFull>FMP24 -rc -i0 -o20001 -P0.0 -f935.0
FMP24 2.86

Current working directory is "C:\Users\Preferred Customer\OneDrive\SDR\DSDPlusFull"
SDR sampling rate = 2.400 MHz
Spectrum window width: 1024
FFT size: 32,768
Spectrum update rate: 10 Hz
Step size table: 5.000 6.250 7.500 12.500 15.000 25.000 100.000
DSD+ path is "C:\Users\Preferred Customer\OneDrive\SDR\DSDPlusFull"
Primary frequency list: '.\FreqList.csv'
Secondary frequency list: '.\FreqList2.csv'
Database search distance: 99.90 miles
Base latitude/longitude: 19.7163 -155.6241
Role is control/rest channel monitor;
Auto-starting control/rest channel following mode
Using first available RTL SDR device
Using DSD+ link ID 20001
PPM correction set to 0.0
Initial frequency set to 935.000000 MHz
Optimizing FFT calculations... done.

Audio output device #1 = 'Panasonic-TV (Intel(R) Display '
Audio output device #2 = 'Line 6 (Virtual Audio Cable)'
Audio output device #3 = 'Line 4 (Virtual Audio Cable)'
Audio output device #4 = 'Line 1 (Virtual Audio Cable)'
Audio output device #5 = 'Line 2 (Virtual Audio Cable)'
Audio output device #6 = 'Line 5 (Virtual Audio Cable)'
Audio output device #7 = 'Line 7 (Virtual Audio Cable)'
Audio output device #8 = 'Line 3 (Virtual Audio Cable)'

SDR device count = 2
SDR device #1 is in use
SDR device #2 serial string = '00000001'
Found Rafael Micro R820T tuner
Found Rafael Micro R820T tuner
Tuner type=5 (R820T)
Serial string = '00000001'
Sampling rate set to 2.400000 MHz

C:\Users\Preferred Customer\OneDrive\SDR\DSDPlusFull>DSDPlus -r1 -i20001 1>>1R-log.txt
2026.01.21 16:58:41
2026.01.21 16:58:41 DSD+ 2.547
2026.01.21 16:58:41 Current working directory is "C:\Users\Preferred Customer\OneDrive\SDR\DSDPlusFull"
2026.01.21 16:58:41 Program role is single-receiver control/rest/traffic channel decoder
2026.01.21 16:58:41 Appending synthesized audio to file '1R-DSDPlus.wav'
2026.01.21 16:58:41
2026.01.21 16:58:41 Assuming FMPA/FMPP/FMP24 is signal source; auto polarity detect is disabled
2026.01.21 16:58:41
2026.01.21 16:58:41 audio output device #1 = 'Panasonic-TV (Intel(R) Display '
2026.01.21 16:58:41 audio output device #2 = 'Line 6 (Virtual Audio Cable)'
2026.01.21 16:58:41 audio output device #3 = 'Line 4 (Virtual Audio Cable)'
2026.01.21 16:58:41 audio output device #4 = 'Line 1 (Virtual Audio Cable)'
2026.01.21 16:58:41 audio output device #5 = 'Line 2 (Virtual Audio Cable)'
2026.01.21 16:58:41 audio output device #6 = 'Line 5 (Virtual Audio Cable)'
2026.01.21 16:58:41 audio output device #7 = 'Line 7 (Virtual Audio Cable)'
2026.01.21 16:58:41 audio output device #8 = 'Line 3 (Virtual Audio Cable)'
2026.01.21 16:58:41
2026.01.21 16:58:41 audio output device #1 (Panasonic-TV (Intel(R) Display ) initialized
2026.01.21 16:58:41
2026.01.21 16:58:41
2026.01.21 16:58:41 Testing Base Files:
2026.01.21 16:58:41
2026.01.21 16:58:41 File: FMP24.exe PASS
2026.01.21 16:58:41 File: FMPA.exe PASS
2026.01.21 16:58:41 File: FMPP.exe PASS
2026.01.21 16:58:41 File: FMP-Map.exe PASS
2026.01.21 16:58:41 File: LRRP.exe PASS
2026.01.21 16:58:41 File: Survey.exe PASS
2026.01.21 16:58:41 File: airspy.dll PASS
2026.01.21 16:58:41 File: lame_enc.dll PASS
2026.01.21 16:58:41 File: libfftw3f-3.dll PASS
2026.01.21 16:58:41 File: libusb-1.0.dll PASS
2026.01.21 16:58:41 File: msvcr90.dll PASS
2026.01.21 16:58:41 File: msvcr100.dll PASS
2026.01.21 16:58:41 File: msvcrt.dll PASS
2026.01.21 16:58:41 File: pthreadVCE2.dll PASS
2026.01.21 16:58:41 File: rtlsdr.dll PASS
2026.01.21 16:58:41 File: rtlsdr_FC0012.dll PASS
2026.01.21 16:58:41 File: rtlsdr_V4.dll PASS
2026.01.21 16:58:41 File: sdrplay_api.dll PASS
2026.01.21 16:58:41
2026.01.21 16:58:41 18 files checked
2026.01.21 16:58:41 18 files passed
2026.01.21 16:58:41
2026.01.21 16:58:41 Base files test: All files passed
2026.01.21 16:58:41 P25 data loaded; 6 networks, 17 sites, 54 channels
2026.01.21 16:58:41 0 frequency records loaded
2026.01.21 16:58:41 0 network records loaded
2026.01.21 16:58:41 0 site records loaded
2026.01.21 16:58:41 94 radio records loaded
2026.01.21 16:58:41 76 group records loaded
2026.01.21 16:58:41 Fusion decoding enabled
2026.01.21 16:58:41 D-STAR decoding enabled
2026.01.21 16:58:41 NXDN4800 decoding enabled
2026.01.21 16:58:41 NXDN9600 decoding enabled
2026.01.21 16:58:41 DMR/MotoTRBO decoding enabled
2026.01.21 16:58:41 0 site loader records loaded
2026.01.21 16:58:41 P25 Phase 1 and Phase 2 decoding enabled
2026.01.21 16:58:41 X2-TDMA decoding enabled
2026.01.21 16:58:41 ProVoice decoding enabled

Mono audio decoding initiated...
2026.01.21 16:58:41 Initiating FMPx link using link ID 20001...
2026.01.21 16:58:41 FMPx link established; link ID = 20001
2026.01.21 16:58:41 FMPx link established

 

[leegam]

Post the contents of your fmp24-cc.bat and 1R.bat. Both ports listed should match. Whether its 20001, 20002 or 7654, they need to match.

Post contents of cmd windows when you start fmp24-cc.bat and dsdplus

I'll check that out. I'll let you know how it goes.