Search found 5 matches
- Mon May 15, 2023 10:42 am
- Forum: GD-77 / DM-1801 / RD-5R / GD-77S
- Topic: GD-77 sensitivity on VHF, how can I calibrate the radio ?
- Replies: 7
- Views: 1169
Re: GD-77 sensitivity on VHF, how can I calibrate the radio ?
Hi Roger, By a "proper datasheet" in the context of the discussion on VHF sensitivity, I mean minimum system sensitivity (not the chip alone) for a certain SINAD across the VHF range the manufacturer claims to cover. Manufacturers state the testing conditions for you to replicate the test (like the ...
- Sun May 14, 2023 8:50 am
- Forum: GD-77 / DM-1801 / RD-5R / GD-77S
- Topic: GD-77 sensitivity on VHF, how can I calibrate the radio ?
- Replies: 7
- Views: 1169
Re: GD-77 sensitivity on VHF, how can I calibrate the radio ?
Well,
It seems to be the way it is, I found several people commenting about sensitivity issues at the RadioddityGD77 facebook group.
Is there a proper datasheet available? I cannot find any, only TX figures from the FCC certification report.
73,
Carlos VK1EA
It seems to be the way it is, I found several people commenting about sensitivity issues at the RadioddityGD77 facebook group.
Is there a proper datasheet available? I cannot find any, only TX figures from the FCC certification report.
73,
Carlos VK1EA
- Sun May 14, 2023 4:02 am
- Forum: GD-77 / DM-1801 / RD-5R / GD-77S
- Topic: GD-77 sensitivity on VHF, how can I calibrate the radio ?
- Replies: 7
- Views: 1169
Re: GD-77 sensitivity on VHF, how can I calibrate the radio ?
Thank you Roger,
I found a copy of Jason's work on the calibration "softpots" but there are lots of values he marked as "unknown", I was hoping that maybe someone managed to identify those related to the receiver's frontend.
https://nq4t.com/anytone/GD-77tune.htm
73,
Carlos VK1EA
I found a copy of Jason's work on the calibration "softpots" but there are lots of values he marked as "unknown", I was hoping that maybe someone managed to identify those related to the receiver's frontend.
https://nq4t.com/anytone/GD-77tune.htm
73,
Carlos VK1EA
- Sun May 14, 2023 3:21 am
- Forum: GD-77 / DM-1801 / RD-5R / GD-77S
- Topic: GD-77 sensitivity on VHF, how can I calibrate the radio ?
- Replies: 7
- Views: 1169
GD-77 sensitivity on VHF, how can I calibrate the radio ?
Hi all, I have a GD-77 I have been enjoying for some time thanks to the OpenGD77 firmware. All DMR activity here in Canberra takes place on UHF. However, I recently tried to use the radio in VHF FM, and noticed that the sensitivity was nowhere as good as the other VHF analog radios I had at home (bo...
- Sun May 29, 2022 12:40 pm
- Forum: New members must post here first
- Topic: Just joined - Carlos VK1EA, Canberra
- Replies: 1
- Views: 658
Just joined - Carlos VK1EA, Canberra
Hi,
I just bought a GD77 and flashed it with OpenGD77; it is much, much better than any other DMR radio I have at home.
You guys made a great effort, I'm really impressed.
73,
Carlos VK1EA
I just bought a GD77 and flashed it with OpenGD77; it is much, much better than any other DMR radio I have at home.
You guys made a great effort, I'm really impressed.
73,
Carlos VK1EA