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I successfully upgraded my UBitX V6.1 with the uBITX_6_N8ME_2_VU3GAO_Mods firmware.

Before upgrading I had calibrated and saved with the firmware supplied with the kit. The calibraion has been correct for a couple of weeks.

This morning, for some reason, the frequency is high, I have to tune 500 Hz lower for proper reception - I tune 7254.5 to receive a station on 7255 kHz.

I opened the user manual that came with the firmware. It is version 0.1 and the screen displays does not match those of this firmware. I followed this FREQ CAL procedure:

"The calibration process is the same as with the
stock firmware. On the main screen, tune the radio to the desired reference frequency. Then on this
screen, tap the FREQ CAL button and adjust until the station is received properly. Tap the FREQ CAL or
tuning knob to exit the adjustment. You may need to do an initial rough BFO calibration first, and you
will want to do a final BFO calibration afterwards. While adjusting the calibration is displayed in the gray
area."

When I tap the FREQ CAL or tuning knob to exit the adjustment to calibration was not saved. I tapped the SAVE button after do the calibration and this seems to save the setting. However to calibration does not seem to be saved; if the station is on 7255kHz I still have to tune 7254.5 kHz.

Does someone have the proper procedure. Is there an updated manual? Again, it was tuning fine for weeks until today.

The RIT operation is confusing:

"Tap to engage RIT. In RIT mode, the RIT button will highlight and the
tuning knob will adjust the receive frequency, but not the transmit frequency. Tap the button or the
tuning knob to disable RIT. The RIT offset is retained and if RIT is reengaged that shift is applied. Hold the
button or the tuning knob to zero out the RIT shift. The RIT offset is not saved to EEPROM. The radio will
power up with a RIT offset."

How can I assure the RIT offset is disabled.?

Finally, is the FREQ CAL setting saved when I power down the rig?

Mike N2MS

I released the initial version of the N8ME firmware about two years ago, then stopped working on. VU3GOA then made some modifications to it about a year ago. I've not kept up with those mods, but I think a lot of things are the same. The answers below are based on the original N8ME firmware. Hopefully VU3GOA will comment on anything affected by his changes.

The manual is the manual I originally released. To my knowledge it has not been updated for the VU3GAO changes. The screen images are for the original firmware.

The settings on the CFG screen including Freq Cal, BFO and Touch are not saved to EEPROM until the user clicks SAVE on the CFG screen. That was by design so that if the user completely screwed up the calibration, he/she could click CANCEL to reset them back to what they were.

But once the SAVE button is clicked, those calibrations are saved to EEPROM and should survive power cycles.

Since the radio offsets the frequency for CW mode, I wonder if that could explain the offset you are seeing recently. Could you be in CW rather than SSB?

As for RIT operation, when the RIT button is highlighted the RIT offset (which is not displayed) is added to the TX frequency and is displayed as the RX frequency. If you click the RIT button so that it is not highlighted, the RIT offset (which is still in memory) is not added. If you click the RIT button again so that it is highlighted, the offset will be added. ?If you hold the RIT button until the radio beeps, the RIT button will un-highlight and the RIT offset will be set to 0. ?Also, the RIT value or RIT in use is not saved to EEPROM, so if you cycle the power RIT will be cancelled and the offset will again be 0.

In answer to your question, if the RIT button is not highlighted, the RIT offset is not applied and the TX and RX frequencies are the same.

I hope this helps

--
73,
Mark, N8ME

Mark,

Thanks for the clarification of the CAL and RIT processes. I will verify that I did not inadvertently CAL it in the CW mode. That can explain the offset.

73 Mike N2MS