MicroP25RX
- Thread starter btt
- Start date
- Status
Looks like mute is resolved, but it doesn't appear to resume scanning.
fw1226-02 is available. This adds the clearing of the audio output buffer and also adds a new config parameter to the [GLOBAL_CONFIG] section of the backup /config file. ENC_TIMEOUT can be set in milliseconds. This is how long the encrypted talk group will be disabled. The default is 30,000 (30 seconds).
What it appears to be doing is skipping all transmissions for 30secs instead of just ENC transmissions. The ENC buffer isn't quite right I still get a couple seconds of garble at the beginning of the transmission.
Even on a real radio I sometimes get a blip.
I’m guessing you are referring to TG’s with both clear and encrypted. If so, then yes. It will skip all transmissions on that TG for the specified time.
No I noticed the calls list populates but no audio is passed on clear channels after an Enc transmission.
Try setting the ENC_TIMEOUT parameter to something like 2000. That will disable the TG for 2 seconds after encrypted communications detection. When the TG is disabled for the timeout period, no activity will be monitored on that talk group including non-encrypted communications. The TG is skipped/ignored for the timeout period.
It is falsely detecting encryption on talk groups that never carry encrypted communications? There is a trade-off between faster detection of encryption and having a possible false detection in poor SNR conditions.
I may have figured this out. Please give 12-27-01 a try.
The MicroP25RX has a very narrow, very steep IF filter. It only sees one channel at a time. Outside of the filter, the signals are reduced by ~100 dB. This is called selectivity. The signals page does allow you to view the spectrum of the IF signal, the amplitude, the EVM, the constellation, and the I/Q XY plot. The Reference frequency is measured very accurately to within a few Hz before being shipped. The TCXO on the MicroP25RX is very sable. There is no need for you to adjust the "ppm".
Take a look at the Signals Display. Press the joystick button in. Select SIGNALS/GAIN MODE. You can edit the gains with the joystick while monitoring all of the signal visuals. I would recommend starting with LNA=12, Mixer=10-12, then adjusting the VGA all the way up to AUTO. After the VGA AUTO value settles, then press the top middle button to save the gain settings.
The latest testing fw update has the top-button mode indicator line added.
There isn't a way to edit the configuration via PC yet, but as of about 5 minutes ago, there is an application available to monitor. A few days back, goldmyne99 told me about a language / development environment called "Processing". It has an arduino / sketch type interface and the language is very close to Java. It is supported on Windows, Mac, and Linux. The application that we developed is called MicroP25RXMon and will allow you to monitor your MicroP25RX on a PC with a display and PC-audio playback over the USB link. The application is currently a single "sketch" file named MicroP25RXMon.pde and can be found here: GitHub - tvelliott/MicroP25RXMon: A monitoring application for the MicroP25RX receiver written for the Processing development environment It is very easy to install the Processing development environment and to run the MicroP25RXMon.pde sketch. It may require that you have a GPU video card with OpenGL support using the default code. If you have troubles with the display being slow, try changing the 'have_gpu=1' to 'have_gpu=0'. With regard to being able to edit the configuration via the application, that will take more effort. This is a start in that direction. In order to use the new application, you will need to update the MicroP25RX firmware to fw1230-03. After you get it up and running, you can generate a Windows executable application under FILE->Export application. Happy New Year!
I am getting an SD Card Init Failed with whatever I try to do with 3 different uSD cards. Any ideas?
Please try formatting your uSD card with this software. This helped multiple people with SD card issues. Please contact me via email if you continue to have issues.
SD Memory Card Formatter for Windows/Mac | SD Association
www.sdcard.org
- Status
