New SDRplay Diversity Software for RSPduo Released

SDRPlay has released SDRuno Version 1.32, API Version 3.04 and ADS-B (dump1090) Version 1.45

The purpose of the new SDRuno software release is primarily to add the MRC (Maximal Ratio Combining) Diversity functionality for the RSPduo, but it also contains other fixes and additions based on customer feedback. Diversity functionality is described on P.78 of the SDRuno User Manual from which the following is taken:

From V1.32 onwards, MRC (Maximal Ratio Combining) Diversity is supported using the RSPduo. MRC
Diversity can be used to combine the 2 tuner input streams together to potentially improved the SNR
(signal to noise ratio). The same frequency is used for both tuners in the RSPduo and the gain can be
adjusted either on each tuner independently or locked together (the default method).
Diversity mode is enabled by clicking on the RSPduo MODE dropdown and select DIVERSITY. Make sure both the 50 ohm ports are connected to the correct input source and note that the HiZ port is not available for Diversity mode. Trying to use the HiZ port will result in an error message being displayed.

More Information - https://www.sdrplay.com/new-sdrplay-diversity-software-for-rspduo-released-other-updates/

SDRuno v1.32 Released

SDRPlay are pleased to announce the release of v1.32 of SDRuno. The purpose of this release is primarily to add MRC Diversity functionality for the RSPduo, but it also contains other fixes and additions based on customer feedback. Diversity functionality is described on P.78 of the SDRuno User Manual.

A full list of the changes can be found in the release notes - https://www.sdrplay.com/do…/SDRplay_SDRuno_Release_Notes.pdf

New Beta Version of FT4 Now Available

the WSJT-X Development Group has released another new beta version of the FT4 protocol now available for testing in WSJT-X 2.1.0-rc7

Changes, improvements, and bug fixes that have been made since WSJT-X 2.1.0-rc5 include:

  • T/R sequence length increased from 6.0 to 7.5 seconds

  • Symbol rate decreased from 23.4375 to 20.8333 baud

  • Signal bandwidth decreased from 90 Hz to 80 Hz

  • Allowable time offsets –1.0 < DT < +1.0 second

  • TX 4 message with “RRR” now allowed, except in contest messages

  • Audio frequency now sent to PSK Reporter

  • Third decoding pass added

  • Improved sensitivity: Threshold S/N is now –17.5 dB

  • Improved S/N calculation

  • In FT4 mode, Shift + F11/F12 moves transmit frequency plus or minus 100 Hz

Release candidate WSJT-X 2.1.0-rc7 will be available for beta-testing through 21st July 2019.

Full ARRL Story - http://www.arrl.org/news/new-beta-version-of-ft4-now-available-mock-contest-session-just-ahead

Download WSJT-X 2.1.0-rc7 - https://physics.princeton.edu/pulsar/k1jt/wsjtx.html