OpenGD77

The 2571 PLL chip is used in the V5 radio. So you need to load the V5 firmware. "Settings Updated" is normal for first use. Just press ENT to accept. "Out of band" indicates the frequency is outside the VHF or UHF range or it can mean that a valid codeplug has not been loaded. OpenGD77 does not supp...

The problem only really shows itself on VHF DMR. Anything less than full power can cause the start of each transmitted burst to be clipped. This can lead to a poor BER at the receiving end even though the signal may be strong. UHF has the same problem but it is much less severe and not normally noti...

The V2.1 board was the first version to be generally available. As far as I know the V1 PCBs never went into production. So it will have the PA rise time problem on low power.

My understanding is that configASSERT(x) is used to check that the value x is non zero (true). If x is zero (false) then the code will disable interrupts and enter an infinite loop. Effectively halting. if x is non-zero (true) then it will do nothing and will continue with the next statement. Colin.

Some TYT radios are frequency locked when new. Maybe you have somehow activated this lock when you reverted to the factory firmware. Apparently the lock can be removed by holding down the top and bottom side buttons (above and below the PTT) while turning on the radio. https://www.buytwowayradios.co...

On the STM32 based radios the calibration information is saved in the secure area of the Flash memory chip. So changing the processor won't affect this.

All of the radios seem to have a chip like this.

The GD77 diagram show it as ALPU-MP-1413. The MD9600 shows it as HRV-3000S.

A Google search on ALPU-MP confirms it is an AES-128 encryption chip.

As we are not interested in encryption it is safe to just ignore it.

Colin G4EML

The Factory Cal setting will always return to 'No' after it has been used. When set to 'Yes' the factory values are restored when the green button is pressed, overwriting any user changes. As this is a one time operation the setting then returns to 'No'. Ideally the line should read 'Restore Factory...

The source code for the MDUV380 and the MD9600 has not yet been released.

It also uses a different development tool, so it will not appear in the MCUExpresso build list.

As stated in the instructions it is here :-

downloads/MD9600/Firmware/Latest

You will need to select the correct version for your radio.
The JA versions are for Japanese users.

Colin G4EML.