OpenGD77

Just a note. That FM DTMF was working a few weeks ago, but I just tested it today and pressing the numbers on the keypad whilst transmitting on FM does not transmit any tone. However pressing # and then entering the numbers to transmit, does work, except curently the A/B key seems to be getting trea...

EA5SW wrote: ↑

Mon Jan 03, 2022 8:33 am

Problem with satellites are in the NASA elements, last week duplicate names, update from another source and works ok.

OK.

Thanks.

I'm getting the data from

https://www.celestrak.com/NORAD/elements/amateur.txt

And don't have any problems

Welcome Sean

m1dyp wrote: ↑

Mon Jan 03, 2022 6:57 am

thank you
unhandled exception when trying to load satellites in new cps

I just checked and I don't get any errors.

m1dyp wrote: ↑

Mon Jan 03, 2022 6:57 am

thank you
unhandled exception when trying to load satellites in new cps

OK.

Thanks.

I'll investigate

There should be no difference between this latest CPS and the previous version except the menu to allow selection of the MD9600 or GD77 radios

In July 2020, I bough a Retevis RT-3S (aks MD-UV380) with the aim to port the firmware to that radio, however it took over 1 month simply to be able to be able to flash the LED on the radio, so I had to stop development becuase I did not have time to continue In September 2021, both Daniel F1RMB and...

The GD77 and MD9600 hardware are quite different The only chips which are which both radios have in common are * The C6000 DMR / DSP chip * The type of Flash chip (but the Flash memory in the MD9600 is 16Mb and only 1Mb in the GD77) * The display controller chip accepts most of the same commands and...

The MD-9600 / RT-90 have 3 major hardware verions, which use different ICs and also other modifications V2 and V3 radios use the same PLL and IF chips V4 radios use a different PLL chip to V2/V3 but use the same IF chip V5 (aka V4A) radios use a different PLL chip to the older radios and also use a ...

The LCD display has the same usable resolution as the GD77/DM1801, 128 x 64 pixels, however the phyical display aspect ratio is more rectangular than the GD77, and the pixels are rectangular rather than square This is very obvious on the satellite polar screen, which draws a circle, becuase the circ...

Currently the User Interface controls are not ideal The underlying GD77 user interface, expects the hardware to have more buttons than the MD-9600 / RT-90 has. Specifically these radios do not have the Left or Right keypad keys, or the SK1 or SK2 buttons. The radio also has a rotary control, but thi...