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Bug #3342

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osmo-trx-lms: low tx output power level

Added by laforge over 4 years ago. Updated 8 months ago.

Status:
Stalled
Priority:
Normal
Assignee:
Category:
LimeSDR
Target version:
-
Start date:
06/13/2018
Due date:
% Done:

90%

Spec Reference:

Description

According to https://discourse.myriadrf.org/t/limesdr-s-maximum-transmitting-power-at-different-frequencies/1649 I would expect something like 3-5dBm maximum output power at 1.8 GHz.

Hoewever, when running at ARFCN 871, and even when manually patching LMS_SetNormalizedGain(m_lms_dev, LMS_CH_TX, chan, 1.0); into the osmo-trx-lms source code, I'm not seeing more than -3.8 dB coming out of the TX1_1 port of the device. Where does that 6..8 dB difference come from?


Files

limesdr_mini_1_phase_lms1810git_extclock40.gif View limesdr_mini_1_phase_lms1810git_extclock40.gif 24.6 KB limesuite 1810+git arfcn 1 limesdr mini phase roh, 01/25/2019 07:43 PM
limesdr_mini_1_env_lms1810git_extclock40.gif View limesdr_mini_1_env_lms1810git_extclock40.gif 17 KB limesuite 1810+git arfcn 1 limesdr mini envelope roh, 01/25/2019 07:43 PM
limesdr_mini_871_env_lms1810git_extclock40.gif View limesdr_mini_871_env_lms1810git_extclock40.gif 16.9 KB limesuite 1810+git arfcn 871 limesdr mini envelope roh, 01/25/2019 08:06 PM
limesdr_mini_871_phase_lms1810git_extclock40.gif View limesdr_mini_871_phase_lms1810git_extclock40.gif 27.6 KB limesuite 1810+git arfcn 871 limesdr mini phase roh, 01/25/2019 08:06 PM
limesdr_usb_871_env_lms1810git_extclock10.gif View limesdr_usb_871_env_lms1810git_extclock10.gif 17.1 KB roh, 01/28/2019 03:48 PM
limesdr_usb_871_env_lms1810git_extclock10_tx-att_9.gif View limesdr_usb_871_env_lms1810git_extclock10_tx-att_9.gif 17.3 KB roh, 01/28/2019 03:48 PM
limesdr_usb_871_env_lms1810git_extclock40.gif View limesdr_usb_871_env_lms1810git_extclock40.gif 17.2 KB roh, 01/28/2019 03:48 PM
limesdr_usb_871_env_lms1810git_extclock40_tx-att_9.gif View limesdr_usb_871_env_lms1810git_extclock40_tx-att_9.gif 17.3 KB roh, 01/28/2019 03:48 PM
limesdr_usb_871_phase_lms1810git_extclock10.gif View limesdr_usb_871_phase_lms1810git_extclock10.gif 24.9 KB roh, 01/28/2019 03:48 PM
limesdr_usb_871_phase_lms1810git_extclock10_tx-att_9.gif View limesdr_usb_871_phase_lms1810git_extclock10_tx-att_9.gif 23.6 KB roh, 01/28/2019 03:48 PM
limesdr_usb_871_phase_lms1810git_extclock40.gif View limesdr_usb_871_phase_lms1810git_extclock40.gif 24.9 KB roh, 01/28/2019 03:48 PM
limesdr_usb_871_phase_lms1810git_extclock40_tx-att_9.gif View limesdr_usb_871_phase_lms1810git_extclock40_tx-att_9.gif 23.9 KB roh, 01/28/2019 03:48 PM
lms_set_band.patch lms_set_band.patch 584 Bytes Patch for initialization of LMSDevice::band_desc defog, 07/07/2021 01:17 PM

Related issues

Related to OsmoTRX - Feature #2919: Native LimeSDR supportResolvedpespin02/09/2018

Actions
Blocked by OsmoTRX - Bug #3775: properly debug limesdr usb and limesdr mini clocking requirements and osmo-trx supportStalled01/31/2019

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