OpenGD77 Instructions by Ian Spencer DJ0HF v2.7A     24.10.2020
Creating a code plug for the GD-77
With these instructions I want to help you create a code-plug for your GD-77.
We are going to create a basic code-plug but it will have everything in it that you will normally need but before we begin it’s important to have everything ready that you are going to need to put into the code plug.
Firstly your call-sign and your DMR ID
There will be one channel for each repeater or hot-spot you want to include in the code-plug. So for each repeater or hot-spot you will need the transmit and receive frequencies, the colour code for each repeater.  For a hot-spot this will normally be colour code 1. You will also have to set the default Time-Slot for each repeater or hot-spot. For a hot-spot it will normally be TS2 and you can normally also use this for most repeaters as it’s only the default and you can always select the other time-slot using the keypad of the GD-77 and finally a default Talk-Group again not critical as you can change it using the GD-77 keypad, I recommend TG9 which is already in the default code-plug which we load at the start.

You will also have to decide which Talk-Groups you want to put in the Code-plug. The default code plug you are modifying already has one talk-group configured TG9 (local). Which additional talk-groups you choose to include is up to you but as a suggestion if you live in the UK TG2350 the UK National Talk-Group and then TG2351, TG2352 and TG2353 the three main UK chat Talk-Groups and perhaps one of the local talk-groups for Scotland, North of England etc. depending on where you live, TG91 for the World wide talk group  and as a blind ham you might want to include TG31679 the Blind Ham Talk-Group and for lots of activity provided you are on the Brandmeister network TG23526 the Hub Net Talk Group, it’s usually very busy but I don’t think it is available on the DMR+ or Phoenix networks. If you are using a hotspot then you don’t have a problem because you can choose to connect to any of the networks that you want. Speech quality on Hub net varies greatly simply because people are being transcoded onto it from many different sources including older FM repeaters, echo-link and many others but as I say you will hear lots of activity.
So let’s get down to creating your own personal code plug.
Set the focus to your desktop and type o until you find your Open GD77CPS short cut on the desktop and hit Enter to start the program running.
Type Alt+f 
and then cursor down twice and you will be focused on the Open menu element
now type default into the edit box and hit enter
if you get a message saying file not found then hit enter to close the error box and 
type Alt+cursor up
followed by shift+tab 
then hit d until you find desktop 
then hit enter
Now hit g and then enter
now hit the space bar and then enter.
Type Alt+s and the settings menu will open
 now hit d and the focus will be on DMR ID and Callsign
so now hit enter and a new window will open and the focus will be on Call sign which at the moment contains GD77. 
Type your Call-sign  (Remember to use Capitals for the letters) and then hit tab. The focus is now on the edit field where you enter your DMR ID and it contains 1 as a default, so now type your DMR ID
 and then close this window by typing Ctrl+F4.
Type Alt+s and the settings menu will open
 hit C and you are on Contact
 then hit Enter
 followed by cursor down once. 
You are now on Digital contacts so hit Enter. The Contact Window will  open with the list of contacts, at the moment the list only has 1 contact in it (Talk group 9) so hit tab to change the focus to the Add button.
Now hit Enter to create a new contact and a new window will open and you will be positioned on the Edit Name field.
 Now type the name you want to give to this contact, for example TG2350, 
then hit tab to change the focus to the Call ID and type the talk-group number in this example 2350
 and then Ctrl+F4 to close the window.
You are not back on the Add button so if you want to create another contact just hit enter and go through the procedure of entering the name and Talk Group again.
When you have created all the contacts that you want to be in your Code-Plug then type Ctrl+F4 to close the contacts window. But for the GD77 to be able to use them they have to be put into a TG List.
Type ALT+s
 and then t to get to TG Lists
 and then hit Enter. 
You are now on the TG List Window and the Focus is on Name please leave this as TG List 1 and we are now going to move the contacts you created into the TG List so now hit tab which will move you to the Add button. The first contact that is TG9 is already in the list so now hit enter for each contact you want to add. So for example if you added 4 contacts then hit the Enter key 4 times or if it was 3 contacts then 3 times. 
Type Ctrl+F4 and you are done the list is complete.
Remember this has created a basic number of talk groups for you to have in your code plug, if at a later date you want to add contacts/talk groups then you can repeat this procedure but remember when you are on the Contact list cursor down the correct number of times to get to your new entries so that you can enter the talk group name and number and then add them to the TG list.
Now we need to create your channels you will need one for each repeater or hot spot you want to use as described earlier.
Type Alt+s
and then hit c twice and you should be on the channels list there is only one channel in the list but unlike the contacts/talk groups it is not pre-configured so you will need to modify it as the first channel that is repeater or hot spot you want to use. 
Now hit Enter and a new window will open.
Now hit tab once and you are on the Add button.
There is already one channel in the list and so if you want 4 channels then hit the Enter key  then type Ctrl+F4 and repeat these two steps 3 times or for example if you want 3 channels then repeat the steps twice. It depends on the number of channels you want to initially create. You can always add channels later if you want to.
 Now hit Tab once to move to the first channel in the list and to set it up for your repeater or hot spot hit space and a new window will appear Hit tab and you are on the first dialog box and it says either analog or digital so if necessary use the cursor up and down keys to change to the mode you want analog or digital that’s dmr  Now hit tab and you are on the name edit field so type the name you want to give this channel (max 16 characters)  then hit tab once and you are on the Receive frequency so type the receive frequency for this channel in the form 3 digits for Mhz then a point and then up to 5 digits for the Khz/Hz but you don’t have to type 5 digits so for example 434.1Mhz you would type 434 hit the full stop and then just type the 1 followed by tab to the next field. Don’t worry if you get an error message saying receive and transmit on different bands as we haven’t set the transmit yet. You are now on the Power Level field and can leave it at Master as you can change it later on the GD77 but if you know you always want to use a particular power for this channel you can use the up and down cursor to select the power level you want.
 then tab again and you are now on the Transmit Frequency Edit field so type the transmit frequency just as you did for the receive. If you are using a simplex hot spot then it will be the same as the receive frequency.
If you are setting up an analog FM channel then skip down these instructions to the analog section, if it is a digital DMR channel then hit tab exactly 6 times to skip over the fields we don’t want to change and you should be on Repeater slot where you can use the up and down cursor keys to select time slot 1 or 2, for a hotspot you will normally always use time slot 2 then tab once to get to TG List and the name of the list is TG List 1. So for a digital channel you shouldn’t need to change it. Now hit tab to the colour code dialog field and then hit cursor up till you reach the colour code you want so for example if you want colour code 1 just hit the up cursor once.
Type Ctrl+F4 to close this window

Next channel
Now hit Tab to take you to the first channel in the list and then cursor down to the channel you now want to modify so once for the second channel in the list and modify it just as before for your second repeater or hot-spot and then of course  for the 3rd channel after you have hit Tab to take you to the first channel in the list you will need to hit the down cursor twice and so on until you have configured all your channel. Once you have done this then type Ctrl+F4 and you are finished with setting up all your channels.
Analog Channel

If you are setting up an Analog channel then you will be asked for different information so you need to tab 6 times to skip over the information we don’t want to change and you should now be on the dialog box for Bandwidth, it should be set already to 12.5Khz for narrow band FM the standard used today for FM channels then hit tab once to go to the squelch settting and my advice is to leave it set to disabled and then you can control the squelch from the GD77. Then hit Tab again to go to  receive tone for the CTCSS or DCS tone. The default is none so if your FM repeater uses a sub audible tone then use the cursor down key to select the one you want.  Once you have found the tone then hit Enter.
Now hit tab once and if you will now be on transmit tone, if you need to transmit a tone for this repeater then as for receive tone use the cursor down key just as for the receive tone to select the one you want and hit Enter.  Now you’re finished so 
type Ctrl+F4 to close the channel information window just as you did for digital channel and go back up the instructions  ‘next channel’.
Now you are finished with creating all your channels but you need to put all of them into a zone. So type Ctrl+F4 to finish this section.
Now type Alt+s
followed by z to open the zones
followed by Enter and a new zone list window will open.
Hit tab once to get to the Add button and then hit Enter once for each channel you have created so if you now have 4 channels then hit Enter 4 times. Now your done so type Ctrl+F4 to close the window.
Congratulations your first code plug is complete and we just have to save it so type Alt+f
and then s for save and a new window will open in windows explorer it will already be pointing to your GD77BH folder and the name so just type a new name into edit field perhaps your call-sign or something similar and hit Enter. If this code plug already exists you will get a warning asking if you want to overwrite it so just type Alt+y.
Now type Alt+F4 to close the CPS program and a window will open asking if you want to save your code plug before exiting and as it’s the code plug you have just saved it doesn’t matter whether you just hit Enter or Ctrl+n if you want to say no. 
Now you are ready to go on to the procedure for uploading your code plug. 
Congratulations you have created your first code plug.
I asked you here to close the CPS program before beginning uploading your code plug because it’s important that you connect your GD77 in the correct way as described in uploading your code plug before restarting the CPS program.