This model is not capable of firmware updates in the field so no files are available for download. Contact Lectrosonics if you need a firmware update.
UCR411a/UCR511a Radio Board v6.3 - 01 November 2018
- Added "Nu Hybrid" compatibility mode for use with newer digital hybrid transmitters.
UCR411a/UCR511a Radio Board v6.2 - 16 August 2013
Made yet more changes to factory testing functions related to RF metering for ease of manufacturing. Any units upgraded to this firmware revision (or to any later revision derived from this one), from any version older than v6.1, must have the RF meter recalibrated.
UCR411a/UCR511a Radio Board v6.1 - 30 July 2013
Made more changes to factory testing functions related to RF metering for ease of manufacturing. Any units upgraded to this firmware revision (or to any later revision derived from this one) must have the RF meter recalibrated.
UCR411a/UCR511a Radio Board v6.0 - 13 March 2013
- Added compatibility mode 7.
- Improved squelch system to ignore supersonic emissions from transmitters, especially Mode 7 transmitters.
- This version works on the same hardware as versions 3.0 and newer, but it must be used with audio board firmware v6.0 or newer, or with audio board firmware v1.6, which implements all features of audio board firmware v6.0 on the older hardware.
UCR411a/UCR511a Radio Board v5.4 - 11 October 2012
- Fixed a problem with the spectrum scan function, wherein a signal on the first 3 frequencies (00, 01, 02) might not be indicated after wrapping around from FF. This problem was applicable only to newer RF boards with the LMX2485 PLL. Any UCR411A that shipped with firmware older than v5.0 preinstalled from the factory has the older PLL, is immune to this problem, and would work identically with v5.3 or v5.4 firmware.
- Made changes to factory testing functions related to RF metering for ease of manufacturing. As a result the RF meter calibration procedure is now different, so any units upgraded to this firmware revision (or a later revision derived from this one) must have the RF meter recalibrated using the new procedure.
UCR411a/UCR511a Radio Board v5.3 - 19 June 2012
- Fixed transmitter battery metering so the icon will appear empty at the correct voltage when lithium batteries are used.
- Increased refresh speed of LCD display (most noticeable on older hardware)
- Adjusted audio meter timing to more closely match transmitter audio metering.
UCR411a/UCR511a Radio Board v5.2 - 01 February 2012
Removed restriction on 608 to 614 MHz in blocks 23 and 606.
UCR411a/UCR511a Radio Board v5.1 - 12 December 2011
This version automatically detects the PLL, either the old SA8026 or the new LMX2485, and adapts correspondingly.
UCR411a/UCR511a Radio Board v4.5 - 12 August 2009
Fixed problem wherein user group V could not always hold 16 channels.
UCR411a/UCR511a Radio Board v4.4 - 04 September 2008
TV channel numbers are now correctly reported on blocks 470 and 19.
UCR411a/UCR511a Radio Board v4.3 - 17 January 2008
- Added support for blocks 470, 19 and 944.
- Display no longer reverts to main window when LCD backlight times out.
UCR411a/UCR511a Radio Board v4.2 - 18 May 2007
Made changes to certain factory testing functions for ease of manufacturing. There is no change to features or performance.
UCR411a/UCR511a Radio Board v4.1 - 21 October 2005
- Improved button detection so that quick button presses always work the first time.
- Last released version for UCR511a.
UCR411a/UCR511a Radio Board v4.0 - 08 September 2005
- Added compatibility mode 6.
- Adjusted diversity switching algorithm for slightly quieter switching.
- Dynamic noise filter now controlled by channel noise rather than signal strength, improving accuracy
UCR411a/UCR511a Radio Board v3.2 - 13 December 2004
Made changes to certain factory testing functions for ease of manufacturing. There is no change to features or performance.
UCR411a/UCR511a Radio Board v3.1 - 11 November 2004
Diagnostic eeprom was not always updated with new version number after an upgrade. Now fixed. This change affects factory testing only, there is no change to features or performance.
UCR411a/UCR511a Radio Board v3.0 - 27 September 2004
- Added "tuning groups" feature.
- Added IFB compatibility mode.
- Use only with audio board firmware v3.0 or or higher, or with audio board firmware v1.3, which implements all the features of audio board firmware v3.2 on the older hardware.
UCR411a/UCR511a Radio Board v1.5 - 28 June 2004
Versions since 1.3 were placing the PLL in fast lock mode. Version 1.5 undoes this, since the PLL performs more reliably in normal lock mode.
UCR411a/UCR511a Radio Board v1.4 - 25 June 2004
- Increased drive in crystal oscillator to improve PLL stability.
- Prevented scan mode from timing out due to lack of button activity.
UCR411a/UCR511a Radio Board v1.3 - 17 June 2004
Fixed latent timing fault in PLL portion of firmware. As of this release, there are no known operational issues traceable to this fault; however, it is corrected to prevent trouble in future.
UCR411a/UCR511a Radio Board v1.2 - 14 June 2004
Increased robustness of startup sequence in the face of rapid-fire power cycling.
UCR411a/UCR511a Radio Board v1.1 - 19 January 2004
Fixed bug in battery timer mode. Battery timer now only increments while a valid signal is present at the receiver.
UCR411a/UCR511a Radio Board v1.0 - 30 December 2003
First production release.
