# LimeSDR

**URL:** https://discourse.myriadrf.org/c/projects/limesdr/21.md

[Latest](https://discourse.myriadrf.org/latest.md) · [Categories](https://discourse.myriadrf.org/categories.md)

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## [About the LimeSDR category](https://discourse.myriadrf.org/t/about-the-limesdr-category/290)

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**Author:** [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Replies:** 1\
**Last updated:** [23 September 2017 15:52 UTC](https://discourse.myriadrf.org/t/about-the-limesdr-category/290 "2017-09-23T15:52:55Z")

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This category is for discussion concerning the LimeSDR family of boards. Please post any LimeSDR questions and suggestions here. Thanks!

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## [BrowSDR now supports the original LimeSDR](https://discourse.myriadrf.org/t/browsdr-now-supports-the-original-limesdr/13346)

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**Author:** [@jLynx](https://discourse.myriadrf.org/u/jLynx)\
**Replies:** 0\
**Last updated:** [7 October 2026 19:12 UTC](https://discourse.myriadrf.org/t/browsdr-now-supports-the-original-limesdr/13346 "2026-10-07T19:12:43Z")

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Hey guys I have finally got around to getting the Original LimeSDR working nice and stable in BrowSDR. (BrowSDR is an open source Web-Based SDR Receiver that runs entirely in your browser) In order to get this to work …

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## [External 10 MHz Clock on LimeSDR Mini 2.0](https://discourse.myriadrf.org/t/external-10-mhz-clock-on-limesdr-mini-2-0/13280)

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**Author:** [@rfguy](https://discourse.myriadrf.org/u/rfguy)\
**Replies:** 2\
**Last updated:** [26 September 2026 17:30 UTC](https://discourse.myriadrf.org/t/external-10-mhz-clock-on-limesdr-mini-2-0/13280 "2026-09-26T17:30:22Z")

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LimeSDR Mini 2.0: my 10 MHz external reference doesn’t lock the clockgen PLL My 10 MHz external reference doesn’t lock the clockgen (CGEN) PLL on the LimeSDR Mini 2.0. Setup: LimeSDR Mini 2.0 (hardware v7, gateware 2.6,…

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## [Tc1-1-13ma+](https://discourse.myriadrf.org/t/tc1-1-13ma/13333)

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**Author:** [@WA4SIX](https://discourse.myriadrf.org/u/WA4SIX)\
**Replies:** 2\
**Last updated:** [24 September 2026 11:44 UTC](https://discourse.myriadrf.org/t/tc1-1-13ma/13333 "2026-09-24T11:44:41Z")

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I am trying to identify an issue with my Limesdr-usb. When looking at the V1.4 schematic, the TC1-1-13MA+ shows as a center tapped primary. The datasheet shows there is no center tap. Should I just use the TC1-1-13MA+, o…

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## [CS-LIME-26 (LimeSDR Mini 2.0) is defective](https://discourse.myriadrf.org/t/cs-lime-26-limesdr-mini-2-0-is-defective/13331)

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**Author:** [@usman.niazi](https://discourse.myriadrf.org/u/usman.niazi)\
**Replies:** 3\
**Last updated:** [24 September 2026 10:42 UTC](https://discourse.myriadrf.org/t/cs-lime-26-limesdr-mini-2-0-is-defective/13331 "2026-09-24T10:42:45Z")

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Hello Team, One of our customers purchased CS-LIME-26 and claim part is defective. They provided following information, One of the parts—in this case, the “LimeSDR Mini 2.0”—is “defective,” though the focus here shoul…

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## [Choosing LimeSDR XTRX v1.3 for GPR](https://discourse.myriadrf.org/t/choosing-limesdr-xtrx-v1-3-for-gpr/13332)

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**Author:** [@PHASEONE\_big](https://discourse.myriadrf.org/u/PHASEONE_big)\
**Replies:** 3\
**Last updated:** [21 September 2026 07:15 UTC](https://discourse.myriadrf.org/t/choosing-limesdr-xtrx-v1-3-for-gpr/13332 "2026-09-21T07:15:02Z")

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Dear All, We are considering the LimeSDR XTRX v1.3 (CS-LIME-27) for a stepped-frequency radar research prototype, and I would like to clarify a few details before ordering the hardware. Our intended RF range is approxi…

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## [Limesdr-usb board test multiple failures](https://discourse.myriadrf.org/t/limesdr-usb-board-test-multiple-failures/13308)

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**Author:** [@WA4SIX](https://discourse.myriadrf.org/u/WA4SIX)\
**Replies:** 2\
**Last updated:** [11 September 2026 21:21 UTC](https://discourse.myriadrf.org/t/limesdr-usb-board-test-multiple-failures/13308 "2026-09-11T21:21:22Z")

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I have tried updating board, not sure if I need to buy a new one? $ LimeQuickTest \[ TESTING STARTED \] -\>Start time: Wed Aug 19 06:12:50 2026 -\>LimeSuite version: 20.10.0-PothosSDR-2021.07.25-vc16-x64 -\>Device: LimeS…

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## [LimeSDR Mini 2.0 not detected after LimeUtil --update (LED on, no USB enumeration)](https://discourse.myriadrf.org/t/limesdr-mini-2-0-not-detected-after-limeutil-update-led-on-no-usb-enumeration/13297)

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**Author:** [@bonbonz000](https://discourse.myriadrf.org/u/bonbonz000)\
**Replies:** 20\
**Last updated:** [1 September 2026 05:55 UTC](https://discourse.myriadrf.org/t/limesdr-mini-2-0-not-detected-after-limeutil-update-led-on-no-usb-enumeration/13297 "2026-09-01T05:55:50Z")

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Hello guys, i got an issue with my limeSDR.. here’s the detail : Device: LimeSDR Mini 2.0 Issue: Device no longer detected after firmware update Description: After running LimeUtil --update which completed successful…

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## [Lime SDR-USB v1.4s: Detached TX2\_2 RF Transformer, Assessing Reusability](https://discourse.myriadrf.org/t/lime-sdr-usb-v1-4s-detached-tx2-2-rf-transformer-assessing-reusability/13322)

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**Author:** [@uhar](https://discourse.myriadrf.org/u/uhar)\
**Replies:** 3\
**Last updated:** [28 August 2026 10:10 UTC](https://discourse.myriadrf.org/t/lime-sdr-usb-v1-4s-detached-tx2-2-rf-transformer-assessing-reusability/13322 "2026-08-28T10:10:02Z")

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Hello, The TX2\_2 RF transformer on my LimeSDR-USB v1.4s board has detached. The PCB pads are intact. Based on my inspection, the detached component is a Mini-Circuits TCM1-63AX+. Since this is a wire-wound co…

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## [LimeSDR Mini v2: LMS7002M reset-line test fails on gateware 3.9 (passed on 2.7)](https://discourse.myriadrf.org/t/limesdr-mini-v2-lms7002m-reset-line-test-fails-on-gateware-3-9-passed-on-2-7/13268)

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**Author:** [@Prajwal](https://discourse.myriadrf.org/u/Prajwal)\
**Replies:** 4\
**Last updated:** [27 August 2026 06:00 UTC](https://discourse.myriadrf.org/t/limesdr-mini-v2-lms7002m-reset-line-test-fails-on-gateware-3-9-passed-on-2-7/13268 "2026-08-27T06:00:40Z")

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Hi , I am using the LimeSDR Mini v2.4 and found an unusual behaviour With Gateware 3.9 , when i ran - LimeQuickTest , observed that \[ LMS7002M Test \] fails But with Gateware 2.7 , when ran - LimeQuickTest , it show…

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## [LimeSDR Micro M.2 power consumption](https://discourse.myriadrf.org/t/limesdr-micro-m-2-power-consumption/13304)

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**Author:** [@jonsnow](https://discourse.myriadrf.org/u/jonsnow)\
**Replies:** 3\
**Last updated:** [24 August 2026 12:43 UTC](https://discourse.myriadrf.org/t/limesdr-micro-m-2-power-consumption/13304 "2026-08-24T12:43:56Z")

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Hey there, I am starting to draft a carrier board for the upcoming LimeSDR Micro M.2 Version. The schematics show a possible input of 2.5A at 3.3V through the M.2 power pins (i.e. 8.25 W). Is this about the expected ma…

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## [LimeSDR : Runtime warning in FFT view](https://discourse.myriadrf.org/t/limesdr-runtime-warning-in-fft-view/13289)

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**Author:** [@zvivered](https://discourse.myriadrf.org/u/zvivered)\
**Replies:** 5\
**Last updated:** [14 August 2026 19:22 UTC](https://discourse.myriadrf.org/t/limesdr-runtime-warning-in-fft-view/13289 "2026-08-14T19:22:09Z")

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Hello, I’m using the GUI with the following parameters: Sample freq. = 18.285714\[MHz\] Band width = 12\[MHz\] Center freq. = 530\[MHz\] Over sample = 2 RX Gain = 30\[dB\] Rx Path= 3 Upon START in the fftviewer I’m getti…

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## [RF RSSI and digital RSSI for AGC](https://discourse.myriadrf.org/t/rf-rssi-and-digital-rssi-for-agc/12948)

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**Author:** [@Kushal1](https://discourse.myriadrf.org/u/Kushal1)\
**Replies:** 6\
**Last updated:** [14 August 2026 11:51 UTC](https://discourse.myriadrf.org/t/rf-rssi-and-digital-rssi-for-agc/12948 "2026-08-14T11:51:40Z")

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Hello all, I want to experiment with long-range transmit (TX) and receive (RX) using the LimeSDR Mini 2.4. To do this, I need to establish an Automatic Gain Control (AGC) loop by observing both: The RF RSSI (pre-RXLNA…

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## [LimeSDR Underrun/Underflow Issues](https://discourse.myriadrf.org/t/limesdr-underrun-underflow-issues/13293)

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**Author:** [@Praveen](https://discourse.myriadrf.org/u/Praveen)\
**Replies:** 2\
**Last updated:** [14 August 2026 11:47 UTC](https://discourse.myriadrf.org/t/limesdr-underrun-underflow-issues/13293 "2026-08-14T11:47:51Z")

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I am using a LimeSDR USB to transmit a GPS L1 signal at a center frequency of 1.57542 GHz with a sample rate of 5 MS/s. I am using the LabVIEW APIs to transmit the signal. I am observing intermittent signal drops at the…

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## [LimePSB RPCM: how to control the integrated PA stage?](https://discourse.myriadrf.org/t/limepsb-rpcm-how-to-control-the-integrated-pa-stage/13295)

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**Author:** [@adim](https://discourse.myriadrf.org/u/adim)\
**Replies:** 2\
**Last updated:** [13 August 2026 08:46 UTC](https://discourse.myriadrf.org/t/limepsb-rpcm-how-to-control-the-integrated-pa-stage/13295 "2026-08-13T08:46:47Z")

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Hello, I was looking inside the developer documentation for information on how to control the integrated PA of the LimePSB, hardware version 1.1, but I did not find this info. I’m using the board via the Soapy module, …

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## [LimeSDR XTRX RX data out of sync](https://discourse.myriadrf.org/t/limesdr-xtrx-rx-data-out-of-sync/13290)

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**Author:** [@dgs0001](https://discourse.myriadrf.org/u/dgs0001)\
**Replies:** 2\
**Last updated:** [29 July 2026 11:14 UTC](https://discourse.myriadrf.org/t/limesdr-xtrx-rx-data-out-of-sync/13290 "2026-07-29T11:14:26Z")

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Our applications need the two RX channels of the same XTRX to be phase coherent. I used the “basicRX” example in LimeSuiteNG and the LimeGUI to capture both RX channels and found data misalignment between the two RX chan…

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## [LimeSDR XTRX: narrow internal spurs in RX spectrum — can they be removed?](https://discourse.myriadrf.org/t/limesdr-xtrx-narrow-internal-spurs-in-rx-spectrum-can-they-be-removed/13288)

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**Author:** [@Ben\_Gant](https://discourse.myriadrf.org/u/Ben_Gant)\
**Replies:** 4\
**Last updated:** [28 July 2026 16:10 UTC](https://discourse.myriadrf.org/t/limesdr-xtrx-narrow-internal-spurs-in-rx-spectrum-can-they-be-removed/13288 "2026-07-28T16:10:58Z")

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Hi all, I’m seeing narrow spurs in the RX spectrum of a LimeSDR XTRX (FW 4, HW 2, PCIe /dev/limepcie0) with the stock gr-limesuiteng source block. Settings as in the attached screenshot: LO 1585e6, sample rate 122.88e6,…

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## [LimeSDR Mini: Holes in the recorded data](https://discourse.myriadrf.org/t/limesdr-mini-holes-in-the-recorded-data/13286)

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**Author:** [@zvivered](https://discourse.myriadrf.org/u/zvivered)\
**Replies:** 2\
**Last updated:** [26 July 2026 09:50 UTC](https://discourse.myriadrf.org/t/limesdr-mini-holes-in-the-recorded-data/13286 "2026-07-26T09:50:42Z")

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Hello, I suspect I have “holes” in the recorded data. So I wrote: config.channel\[0\].rx.testSignal = true; Before running: device-\>Configure What wave shape should I get ? Does this shape depends on parameters lik…

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## [LimeSDR Mini: Readback of configurtion](https://discourse.myriadrf.org/t/limesdr-mini-readback-of-configurtion/13287)

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**Author:** [@zvivered](https://discourse.myriadrf.org/u/zvivered)\
**Replies:** 3\
**Last updated:** [25 July 2026 02:12 UTC](https://discourse.myriadrf.org/t/limesdr-mini-readback-of-configurtion/13287 "2026-07-25T02:12:12Z")

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Hello, I used the following configurtion: config.channel\[0\].rx.enabled = true; config.channel\[0\].rx.gain\[eGainTypes::LNA\] = 30; config.channel\[0\].rx.centerFrequency = 530e6; config.channel\[0\].rx.sampleRate = 10e6; conf…

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## [LimeSDR Mini: calibration in GUI](https://discourse.myriadrf.org/t/limesdr-mini-calibration-in-gui/13282)

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**Author:** [@zvivered](https://discourse.myriadrf.org/u/zvivered)\
**Replies:** 2\
**Last updated:** [23 July 2026 08:32 UTC](https://discourse.myriadrf.org/t/limesdr-mini-calibration-in-gui/13282 "2026-07-23T08:32:47Z")

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Hello, I double checked in the source code of the GUI. The flag(s) of rx.calibrate are not set at all. Is there any reason for this ? Thank you, Zvi

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## [TX LO leakage persists after stopping transmission and RX LED activates during TX-only sessions in LimeSuiteNG](https://discourse.myriadrf.org/t/tx-lo-leakage-persists-after-stopping-transmission-and-rx-led-activates-during-tx-only-sessions-in-limesuiteng/13284)

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**Author:** [@Prajwal](https://discourse.myriadrf.org/u/Prajwal)\
**Replies:** 2\
**Last updated:** [23 July 2026 08:27 UTC](https://discourse.myriadrf.org/t/tx-lo-leakage-persists-after-stopping-transmission-and-rx-led-activates-during-tx-only-sessions-in-limesuiteng/13284 "2026-07-23T08:27:46Z")

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Hi, I am using a LimeSDR Mini v2.4 (Gateware v3.10) with LimeSuiteNG built from source, and I have encountered the following two issues. Issue 1: TX LO leakage after stopping transmission After starting a TX stream (e…

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## [LimeSDR Mini: DCIQ vs. FILTER calibration](https://discourse.myriadrf.org/t/limesdr-mini-dciq-vs-filter-calibration/13277)

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**Author:** [@zvivered](https://discourse.myriadrf.org/u/zvivered)\
**Replies:** 1\
**Last updated:** [15 July 2026 08:12 UTC](https://discourse.myriadrf.org/t/limesdr-mini-dciq-vs-filter-calibration/13277 "2026-07-15T08:12:46Z")

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Hello, I’m using the following code for initialization: using namespace lime; using namespace std::literals::string\_view\_literals; std::unique\_ptr\<lime::RFStream\> stream; SDRConfig config; StreamConfig streamCfg; /\*\*\*\*…

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## [LimeSDR Mini v2 - CGEN PLL won't lock (TuneVCO failed)](https://discourse.myriadrf.org/t/limesdr-mini-v2-cgen-pll-wont-lock-tunevco-failed/13262)

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**Author:** [@momo99](https://discourse.myriadrf.org/u/momo99)\
**Replies:** 6\
**Last updated:** [14 July 2026 06:41 UTC](https://discourse.myriadrf.org/t/limesdr-mini-v2-cgen-pll-wont-lock-tunevco-failed/13262 "2026-07-14T06:41:38Z")

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Hi everyone, I’m having a persistent issue with my LimeSDR Mini v2 and I’m hoping someone here can help. The problem: When I run LimeUtil --timing, I get the following errors: TuneVCO(CGEN) - failed to lock (cmphl!=0…

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## [LimeSDR Mini v2: CGEN lock failure caused by dead PCB power rail (software workaround)](https://discourse.myriadrf.org/t/limesdr-mini-v2-cgen-lock-failure-caused-by-dead-pcb-power-rail-software-workaround/13275)

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**Author:** [@zsolt](https://discourse.myriadrf.org/u/zsolt)\
**Replies:** 0\
**Last updated:** [13 July 2026 20:26 UTC](https://discourse.myriadrf.org/t/limesdr-mini-v2-cgen-lock-failure-caused-by-dead-pcb-power-rail-software-workaround/13275 "2026-07-13T20:26:14Z")

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Hi everyone, I recently had a LimeSDR Mini v2 (serial \`1DA179B92E03DE\`) become completely unusable. Every attempt to use it resulted in the following error: \> \`TuneVCO(CGEN) - failed to lock (cmphl!=0)\` This prevented…

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## [LimeSDR Mini 2.0 - TX completely dead despite successful software execution](https://discourse.myriadrf.org/t/limesdr-mini-2-0-tx-completely-dead-despite-successful-software-execution/13267)

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**Author:** [@momo99](https://discourse.myriadrf.org/u/momo99)\
**Replies:** 0\
**Last updated:** [7 July 2026 09:23 UTC](https://discourse.myriadrf.org/t/limesdr-mini-2-0-tx-completely-dead-despite-successful-software-execution/13267 "2026-07-07T09:23:50Z")

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Hi everyone, I am reaching out because I suspect a severe hardware failure on the TX chain of my LimeSDR Mini 2.0 (HW=7, GW=2.2, LimeSuite 23.11.0). Symptoms and Diagnostics Performed: LimeQuickTest passes 100%, incl…

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## [Lime SDR 2.4 setup / config for an absolute newbie](https://discourse.myriadrf.org/t/lime-sdr-2-4-setup-config-for-an-absolute-newbie/13260)

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**Author:** [@Dreadest](https://discourse.myriadrf.org/u/Dreadest)\
**Replies:** 1\
**Last updated:** [30 June 2026 10:38 UTC](https://discourse.myriadrf.org/t/lime-sdr-2-4-setup-config-for-an-absolute-newbie/13260 "2026-06-30T10:38:22Z")

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I am trying to setup a LimeSDR Mini 2.4 on my Win11 machine. I have no idea what I am doing and am completely confused by all the varying information out there. I have tried the “read me”, wikis, etc and apparently am no…

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## [LimeSDR XTRX PCIe Bracket](https://discourse.myriadrf.org/t/limesdr-xtrx-pcie-bracket/13265)

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**Author:** [@rrmills](https://discourse.myriadrf.org/u/rrmills)\
**Replies:** 0\
**Last updated:** [29 June 2026 15:23 UTC](https://discourse.myriadrf.org/t/limesdr-xtrx-pcie-bracket/13265 "2026-06-29T15:23:01Z")

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I’m working on a project and had an unfortunate shipping incident which bent the mounting brackets on the PCIe carrier boards on my XTRXs. Does anyone have replacement part numbers or anything like that?

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## [LimeSDR Mini V2 IQ output grabbing](https://discourse.myriadrf.org/t/limesdr-mini-v2-iq-output-grabbing/13264)

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**Author:** [@Ben-PE2BZ](https://discourse.myriadrf.org/u/Ben-PE2BZ)\
**Replies:** 2\
**Last updated:** [29 June 2026 11:46 UTC](https://discourse.myriadrf.org/t/limesdr-mini-v2-iq-output-grabbing/13264 "2026-06-29T11:46:09Z")

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Hi, after running satellite obeservations in 402, 437 and 2250 MHz band for some years on HackRF and PlutoSDR I decided to go for a (12 bit) device which can run / grab up to 30 MHz bandwidth over USB 3.0 I have been ru…

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## [srsRAN 4G with LimeSDR Mini - Samsung S25 not seeing the network (Rogue Cell blocking?)](https://discourse.myriadrf.org/t/srsran-4g-with-limesdr-mini-samsung-s25-not-seeing-the-network-rogue-cell-blocking/13251)

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**Author:** [@momo99](https://discourse.myriadrf.org/u/momo99)\
**Replies:** 0\
**Last updated:** [12 June 2026 14:02 UTC](https://discourse.myriadrf.org/t/srsran-4g-with-limesdr-mini-samsung-s25-not-seeing-the-network-rogue-cell-blocking/13251 "2026-06-12T14:02:51Z")

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Body: Hi everyone, I am currently running an experimental LTE network using srsRAN 4G (EPC + eNodeB) on a Raspberry Pi 5 with a LimeSDR Mini 2.0. The hardware and software initialization is successful: The EUTRA s…

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## [LimeSDR mini - Device not found](https://discourse.myriadrf.org/t/limesdr-mini-device-not-found/13244)

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**Author:** [@zvivered](https://discourse.myriadrf.org/u/zvivered)\
**Replies:** 2\
**Last updated:** [11 June 2026 20:10 UTC](https://discourse.myriadrf.org/t/limesdr-mini-device-not-found/13244 "2026-06-11T20:10:57Z")

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Hello, I plugged in my Mini 2.0. The green LED is blinking. I installed Winusb\_D3XX\_Release\_1.4.0.1.zip Upon completion, the device manager is clean: There are no ? nor ! in this manager. I also installed ezusbf…

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