search

hmatuschek / qdmr

A GUI application for configuring and programming cheap DMR radios under Linux and MacOS X.
https://dm3mat.darc.de/qdmr/
GNU General Public License v3.0
223 stars 46 forks source link

OpenGD77: Incorrect power levels #28

Closed DC7IA closed 3 years ago

DC7IA commented 3 years ago

OpenGD77 supports the power levels 50 mW, 250 mW, 500 mW, 750 mW, 1 W, 2 W, 3 W, 4 W and 5 W.

However, I can only choose low or high.

DC7IA commented 3 years ago

Writing changes the power level I use for hotspots from 50 mW to 5 W.

hmatuschek commented 3 years ago

OK, this is actually not a bug. With QDMR I try to provide a common code plug format that supports all radios. The idea is, to have a common exchangeable code-plug format. It is hard to assemble a proper code-plug for one region, to do that for every radio is simply impossible. To this end, I have to find some sort of a "largest common factor" of all radios. The majority of all radios supports only two or three power settings. Hence QDMR supports only two power levels.

However, I am willing to extend the current options, if I find a reasonable way to map these options to all radios. I can imagine that a very low power-setting is desirable (e.g. 100mW or 50mW). E.g., for hotspots etc.

How about "Minimum", "Low", "Mid", "High" and "Maximum" with the mapping

OpenGD77: Min=50mW, Low=1W, Mid=3W, High=5W, Max=5W GD77/RD-5R: Min=1W, Low=1W, Mid=1W, High=5W, Max=5W UV390: Min=1W, Low=1W, Mid=2.5W, High=5W, Max=5W AnyTone: Min=1W, Low=1W, Mid=2.5W, High=5W, Max=7W

Anyway, decoding the power-setting and mapping them to one of the defined levels must be fixed for the OpenGD77 firmware.

DC7IA commented 3 years ago

However, I am willing to extend the current options, if I find a reasonable way to map these options to all radios

Just convert it to the closes power level for other radios.

That way all possible values work and when flashing to other radios, a popup could inform the user that their radio does not support the level and that the closest will be chosen instead.

Includes all the values while keeping the compatibility, which I view as the most important feature of qdmr.

What do you think?

hmatuschek commented 3 years ago

I would no allow to select specific power levels. For some radios the output power depends on the band. E.g. Anytone devices may transmit with 7W on VHF but only max. 6W on UHF when set to maximum. Hence my suggestion to have labeled power levels.

Also, supporting all features of all radios will be a nightmare. I have to find a more common abstract set of features that provide a balance between completeness and simplicity.

DC7IA commented 3 years ago

Then maybe a level "lowest" for 50 mW?

I mean, I only really need 50 mW for the Hotspot and 5 W for everything else. :D

hmatuschek commented 3 years ago

Sure, here my TODO list

A lot to do.