Search found 13 matches

by OH7FES
Wed Apr 22, 2020 12:07 pm
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Pre-release 22nd April
Replies: 23
Views: 13772

Re: Pre-release 22nd April

TNX
GD77 new phone, FM Mic gain works very fine
73 OH7FES Ari
by OH7FES
Sun Apr 05, 2020 4:34 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Prerelease 4th April
Replies: 33
Views: 17678

Re: Prerelease 4th April

GM
Now VFO Scan works very fine.
TNX
73 OH7FES Ari
by OH7FES
Sun Apr 05, 2020 4:29 am
Forum: Developer discussions
Topic: [Solved] Revised backlight modes
Replies: 8
Views: 5265

Re: Revised backlight modes

Hello OH4VA
Thanks for OH4VA backlight fix. Now both Auto and Manual mode work really well, WHEN the Min bright setting is 1%, now Manual setting backlight can be turned off.
73 OH7FES Ari
by OH7FES
Thu Mar 12, 2020 1:28 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Update 6th March Version 2
Replies: 55
Views: 27580

Re: Update 6th March Version 2

DMR Mic set to 12dB is very high gain. In fact it is the maximum gain. Probably not surprising it is picking up noise. Normal setting is 0dB. GM i am not using an external mic. ok now parrot testing mic: 0db both speak audio voice is normal and ok (display light off and on) Display options: Brightn...
by OH7FES
Wed Mar 11, 2020 11:34 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Update 6th March Version 2
Replies: 55
Views: 27580

Re: Update 6th March Version 2

volume control level has no effect at all to this.

GD77 parrot test

Display options: Brightness:100%
Sound options:DMR mic:12db

mp3 audio file
https://qsl.net/oh7fes/parrot_test.mp3
by OH7FES
Wed Mar 11, 2020 11:17 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Update 6th March Version 2
Replies: 55
Views: 27580

Re: Update 6th March Version 2

BTW. There is a calibration setting which controls the output gain from the audio DAC Do you need to have your volume control very high to hear the audio. If so it may be a calibration problem which is causing this GD 77 receiver is ok. but transmission TX transmits little noise that is audible in ...
by OH7FES
Wed Mar 11, 2020 10:28 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Update 6th March Version 2
Replies: 55
Views: 27580

Re: Update 6th March Version 2

VK3KYY wrote:
Sat Mar 07, 2020 8:44 pm
I think your radio has a hardware fault, but I will need to change the the firmware so that PWM is only used if users select dimming.
is this change already done?
OH7FES Ari
by OH7FES
Sun Mar 08, 2020 6:29 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Update 6th March Version 2
Replies: 55
Views: 27580

Re: Update 6th March Version 2

Hi Roger, I installed the 3_6_2020 firmware release with the new CPS into one of my GD-77 radios and it went in fine. Before this version, I could hear a very soft digital noise in the background during the playback when doing a Parrot check. I don't hear a trace of that with this version so perhap...
by OH7FES
Sat Mar 07, 2020 3:17 pm
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Update 6th March Version 2
Replies: 55
Views: 27580

Re: Update 6th March Version 2

VK3KYY wrote:
Sat Mar 07, 2020 11:03 am
I've attached version which uses 100kHz PWM, but I doubt it will make any difference
Hello
100 kHz firmware had no effect on the background noise. Turning display light off eliminates the noise perfectly. Or setting brightness to 10% or less.
73 OH7FES Ari
by OH7FES
Sat Mar 07, 2020 6:32 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Update 6th March Version 2
Replies: 55
Views: 27580

Re: Update 6th March Version 2

Hi Roger, I installed the 3_6_2020 firmware release with the new CPS into one of my GD-77 radios and it went in fine. Before this version, I could hear a very soft digital noise in the background during the playback when doing a Parrot check. I don't hear a trace of that with this version so perhap...