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Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Sun Sep 25, 2022 12:00 pm
by PU4AML
Hello, I would like to thank everyone for the excellent work, even though the Alpha version for retevis RT3s is already noticed a huge difference in relation to the factory one, I realized that when charging the radio, after about 4 hours charging l the light of the charging base turns green but the battery does not charge 100%, it is between 80%, being necessary to leave it for more hours.

What will be the problem? Thank you, 73

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Sun Sep 25, 2022 1:47 pm
by OE1MWW
PU4AML wrote:
Sun Sep 25, 2022 12:00 pm
What will be the problem? Thank you, 73
same on my RT-3S. You have to measure the voltage on the back side, (~ 8.2 Volt is 100%)
Go to 'Radio Info' and look, what battery voltage you seeing. Note that value Most probably
less than the one you measured. Note the difference.
After this go to 'Option' 'General Options' and 'Batt Cal.' and adjust by that difference.

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Mon Sep 26, 2022 2:03 am
by PU4AML
I don't have the ECO modes installed, where can I get an installation procedure for RT3s?

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Mon Sep 26, 2022 2:19 am
by VK3KYY
OE1MWW wrote:
Sun Sep 25, 2022 1:47 pm
PU4AML wrote:
Sun Sep 25, 2022 12:00 pm
What will be the problem? Thank you, 73
same on my RT-3S. You have to measure the voltage on the back side, (~ 8.2 Volt is 100%)
AFIK. LiPo cels are normally rated at 4.2V to be fully charged.

https://en.wikipedia.org/wiki/Lithium_polymer_battery

So fully charged battery should be around 8.4V

The firmware by default won't show 100% charged untill the battery voltage is at least 8.2V, even though this is only actually about 95% of maximum capacity.

You can also set the display options to show battery voltage.

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Thu Sep 29, 2022 2:54 pm
by S58SMS
Hello.

Has anybody noticed, that rx-reception on rt3s is much worser than on baofeng for exampe. I have two stations together - baofeng rssi meter to the middle, rt3s barely recognizes the signal...

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Fri Sep 30, 2022 5:45 am
by EU1AEQ
S58SMS wrote:
Thu Sep 29, 2022 2:54 pm
Hello.

Has anybody noticed, that rx-reception on rt3s is much worser than on baofeng for exampe. I have two stations together - baofeng rssi meter to the middle, rt3s barely recognizes the signal...
My friend and I have a normal reception.

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Fri Sep 30, 2022 7:08 am
by S58SMS
Hm, what would cause this. The station is brand new... stock antenna. Maybe something with the calibration? I will take some photos later today.

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Fri Sep 30, 2022 7:13 am
by VK3KYY
S58SMS wrote:
Fri Sep 30, 2022 7:08 am
Hm, what would cause this. The station is brand new... stock antenna. Maybe something with the calibration? I will take some photos later today.
Return to the official firmware and confirm the radio or your antenna etc etc does not have any hardware faults

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Sat Oct 01, 2022 4:04 pm
by PU2RMT
EU1AEQ wrote:
Fri Sep 30, 2022 5:45 am
S58SMS wrote:
Thu Sep 29, 2022 2:54 pm
Hello.

Has anybody noticed, that rx-reception on rt3s is much worser than on baofeng for exampe. I have two stations together - baofeng rssi meter to the middle, rt3s barely recognizes the signal...
My friend and I have a normal reception.
I noticed this difference between my rt3s and the dm5r, the signal meter of both the bar and the rssi of the rt3s is always lower than the dm5r

Re: ALPHA TYT MD-UV380 / RT-3S Installation information

Posted: Sat Oct 01, 2022 6:43 pm
by G4EML
The RSSI and the S Meter are not calibrated on any of the radio models. The readings will differ between radios and between radio types. This is just an indication, it does not mean that there is a difference in receive performance.