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Budget and Entry Level Transceivers - For discussion of budget or entry level radios such as Baofeng, Wouxun, Puxing and other radio communications designated as commercial but not targeted for Amateur or GMRS. Also included are MURS and ISM 900MHz designed radios.

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  #141 (permalink)  
Old 11-14-2017, 12:07 AM
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Originally Posted by timjude View Post
I have programmed this thing with a codeplug but it will not scan?What am i missing here..I press scan button and scan fail comes on the screen..
I have had the same issue though like you are unsure how to resolve it, found out though to not check auto scan in the channel options in cps and you just have to manually press scan button for scanning because when you check auto scan it means it automatically scans it doesn't need to be manually triggered though my only problem now is I cannot get it to un mute so I can hear people, it only unmutes for fire rescue dispatch in my area because it has the known talk group in it and besides that was on promiscuous aka monitor mode to scan both timeslots.
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  #142 (permalink)  
Old 11-14-2017, 1:00 AM
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Originally Posted by timnboys View Post
I have had the same issue though like you are unsure how to resolve it, found out though to not check auto scan in the channel options in cps and you just have to manually press scan button for scanning because when you check auto scan it means it automatically scans it doesn't need to be manually triggered though my only problem now is I cannot get it to un mute so I can hear people, it only unmutes for fire rescue dispatch in my area because it has the known talk group in it and besides that was on promiscuous aka monitor mode to scan both timeslots.
I'm not near the radio or computer but there's a setting that says "single single" or "single double". You want it on single single or off. Single double or double double (I can't remember for sure) caused a scan fail.
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  #143 (permalink)  
Old 11-14-2017, 2:06 AM
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Make sure you have created at least one "Scan List" with the channels you want to scan (up to 16 channels per scan list) and then assign it to each channel in a zone. To start scanning change to a channel that has a scanlist programmed and press the button assigned for Scan.
Here are more tips on programming the GD-77.
https://forums.radioreference.com/at...-oh-my-god.txt
https://m.youtube.com/watch?v=3hr9zAJmE2I
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  #144 (permalink)  
Old 12-28-2017, 4:23 AM
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Default Caller ID GD-77

The GD-77 will display the caller callsign and DMR ID. It is limited by memory size, however I have downloaded over 1200 in mine so far. The download utility is available of the Radioditty website. The database is available on DMR-Marc. I am still trying to get a name to show with the callsign but the fields appear to be limited. It is a bit tricky with importing the data into excel spreadsheet to format for downlaod. The import utility does not show the file coming in, but its there, then write it to the radio. If you get it wrong the radio will give an error message. You need to put the radio into a special program mode different than the firmware programming mode. Press # key, the 1 key, the blue side key all at once, then turn on the radio. Then write the file to the radio.
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  #145 (permalink)  
Old 12-28-2017, 12:30 PM
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Default Scan Groups Limited to 16 ???

Hi folks. I can't get more than 16 scan groups. Program won't let me create more. Am I doing something wrong?? Thanks.
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  #146 (permalink)  
Old 01-01-2018, 3:01 PM
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Default GD-77 Charger

How long does it take to charge the GD-77 on the drop in charger?

Does the light on the charger turn green when fully charged or does it stay red?
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  #147 (permalink)  
Old 01-01-2018, 3:14 PM
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Originally Posted by JTMax View Post
How long does it take to charge the GD-77 on the drop in charger?

Does the light on the charger turn green when fully charged or does it stay red?
It's a good 8 hours using the stock charger, and yes the light will turn green.
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  #148 (permalink)  
Old 01-01-2018, 4:30 PM
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Thanks.
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  #149 (permalink)  
Old 01-02-2018, 5:57 PM
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I ordered one of these today and cannot wait for it to arrive. Hopefully this isn't too silly of a question but I mainly use my current analog HT to communicate with a group of people that also have analog equipment. Am I able to program the frequency we use on digital mode and still hear them or does it need to be in analog mode?

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  #150 (permalink)  
Old 01-02-2018, 6:41 PM
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It does both analog and digital modes independently.
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  #151 (permalink)  
Old 01-02-2018, 6:44 PM
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Originally Posted by jaspence View Post
It does both analog and digital modes independently.
Ok, so they would need DMR radios to converse with me on digital then. Thanks!

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  #152 (permalink)  
Old 01-04-2018, 5:57 AM
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Any idea if there are plans to make GD77 capable of DMRA 40-bit ARC4 encryption? That would make interoperable with other radios.
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  #153 (permalink)  
Old 01-04-2018, 7:24 AM
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Default Encryption

The GD-77 is a low end radio and not intended for professional use like Hytera (not Tytera) or Motorola. Since encryption is not allowed on amateur bands in the US, there is no point to include it in the firmware or to have two different builds that would increase costs. Any user that requires secure coms should be considering a professional brand.

Last edited by jaspence; 01-04-2018 at 7:29 AM..
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  #154 (permalink)  
Old 01-04-2018, 7:25 AM
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Quote:
Originally Posted by jaspence View Post
The GD-77 is a low end radio and not intended for professional use like Hytera (not Tytera) or Motorola. Since encryption is not allowed on amateur bands, there is no point to include it in the firmware. Any user that requires secure coms should be considering a professional brand.
Yes it is low end.
In Poland encryption is not forbidden on amateur bands. Please note that only the voice data is encrypted not the source and target ID.
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  #155 (permalink)  
Old 01-08-2018, 6:22 PM
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New radio arrived today.

Updated firmware to V3.0.6. Appeared successful.

Installed software V2.0.5. on my Windows 10 laptop,

Cannot now connect computer to radio. Keep getting "Device not found".

Have tried a Factory Reset as per the Instruction Manual. This has not helped. Now every time I switch the set on I get "Factory Init..." followed by "welcome" and then a display that says "Freq Error".

Any suggestions?
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  #156 (permalink)  
Old 01-09-2018, 9:20 AM
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Default Problem diagnosed...

Faulty socket making intermittent contact with programming lead. Also affects the audio...

Back to supplier methinks!
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  #157 (permalink)  
Old 01-24-2018, 5:47 PM
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Originally Posted by mattimac View Post
Any idea if there are plans to make GD77 capable of DMRA 40-bit ARC4 encryption? That would make interoperable with other radios.
Does this mean the GD-77 does not include DMR encryption (basic or enhanced)?
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  #158 (permalink)  
Old 01-24-2018, 5:50 PM
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Originally Posted by human8472 View Post
Does this mean the GD-77 does not include DMR encryption (basic or enhanced)?
It does.. but I don't think it's compatible with any other brands (definitely not Moto/Hytera etc).
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  #159 (permalink)  
Old 01-24-2018, 6:08 PM
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Quote:
Originally Posted by human8472 View Post
Does this mean the GD-77 does not include DMR encryption (basic or enhanced)?
It does not contain anything relatively strong, known of algorithm and compatible with something else. 40bit DMRA ARC4 is relativeley weak but at least compatible in between Motorola (enhanced privacy) and Hytera for example.
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  #160 (permalink)  
Old 01-24-2018, 11:31 PM
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Granted, 40-bit encryption is not the best but it is a whole lot better than the basic encryption where there are only 256 different codes.

So does the GD-77 have enhanced 40-bit encryption that is compatible with TRBO? Sorry, but I couldn’t figure out from your last post what is has for encryption capabilities. Thanks.
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