Port to TYT UV380/UV390

VK3KYY
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Re: Port to TYT UV380/UV390

Post by VK3KYY » Thu May 07, 2020 9:14 am

OK.

By default the MCU will be read protected, so most of the commands won't work.

VK3KYY
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Re: Port to TYT UV380/UV390

Post by VK3KYY » Sun May 10, 2020 11:22 am

Guys.

FYI.

I just ordered a RT-3S from AliExpress, but it will take between 3 and 6 weeks to arrive.

Ty Weaver has now cracked the encryption on the MD-9600 which he tells me uses the same encryption as the MD2017 and the UV-380 , and the UV-380 and RT-3S are the same radio.

So I am hoping that with this information I can upload firmware into the RT-3S

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EB3AM
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Re: Port to TYT UV380/UV390

Post by EB3AM » Sun May 10, 2020 4:41 pm

:roll:
My next HT?
:roll:
Jordi, EB3AM, Talarn JN02ke, Catalonia.

Radios: OpenGD77 RadioDitty
Repeaters: MMDVM with a Standard RP80-U (DMR + FM)

ve7mdt
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Re: Port to TYT UV380/UV390

Post by ve7mdt » Tue May 12, 2020 2:02 pm

VK3KYY wrote:
Sun May 10, 2020 11:22 am
Guys.

FYI.

I just ordered a RT-3S from AliExpress, but it will take between 3 and 6 weeks to arrive.

Ty Weaver has now cracked the encryption on the MD-9600 which he tells me uses the same encryption as the MD2017 and the UV-380 , and the UV-380 and RT-3S are the same radio.

So I am hoping that with this information I can upload firmware into the RT-3S
That's an excellent news indeed. I hope you got a good price on your RT3s. I have purchased 2 (first w/o GPSr and second w/ GPSr in diff time and the price on eBay, actually the same seller (claimed to be Retevis official) has dropped by 30%, and the first was already on sale at that price. It's just mind boggling that the price has become 1/3 of what it was launched at, approx $180 USD then). And it has become less expensive than the GD-77 unless the GD-77 also goes on sale, then they are about on par, but you get a lot more from RT3s (or UV380).

Some of my friends own the MD-2017 or the MD-9600. One told me that there is some weird bug w/ the MD-9600 that it transmits w/ high BER unless it is in low power, and it affects MID or HIGH setting. He has not been able to resolved that.

The MD-2017 has a Blackberry like trackball that is an oddball (pun?), and some really hated it including someone I know, and the solution is to remove the ball completely. (how painful it is?).

The MD-2017 and MD-UV380 shared a lot of the same feature list items, so they should be pretty close in specs etc.
73,
David
VE7ET / VE7MDT
DMR radios: D878UV, D578UV-III (not arrived yet), XPR 5550, XPR 4550, XPR 7550, SL 7550, VXD-7200, CS-800D, RD-5R, GD-77, RT3s, MD-340 (not arrived yet)
DMR repeater: XPR 8400 UHF

G4EML
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Re: Port to TYT UV380/UV390

Post by G4EML » Tue May 12, 2020 3:29 pm

The MD-9600 problem only affects the first two hardware variants, the latest models have been fixed with a re-design of the PA power control circuit.
The problem is the opposite to your description. It works fine in high power but at mid or low power the PA takes too long to turn on so the first part of the burst is missing or at least corrupted. This is most noticeable at VHF but it does affect UHF a little.
This can only be fixed with a rather involved hardware mod which has not been made generally available as it is not something most people would be able to do.

The 9600 is actually a very good radio in all other respects. It would be nice to port OpenGD77 on to it . But it is a massive job, about the only common hardware is the HRC-6000

Colin

VK3KYY
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Re: Port to TYT UV380/UV390

Post by VK3KYY » Tue May 12, 2020 11:44 pm

Retrevis are definitely selling them at rock bottom prices.

I paid $75 USD (around AUD $119 including 10% local GST), including shipping, albeit very slow shipping as the only express shipping on offer was $40 extra for DHL.

I just checked the Radioddity website and the GD-77 would cost me $138 AUD at the moment, so the RT-3S is definitely cheaper for a comparable radio.

I can see why people are attracted to the RT-3S, because of the low price and the fancy colour screen, however I personally using coloured screens outdoors is a big problem with the very strong sunlight we have here in Australia, hence why I like the GD-77 and other radios with a black and white display.

Its just a shame the display isn't a big larger, because I don't think a colour screen really adds a lot to the usability, but a larger screen does.

I also prefer the Left / Right buttons on the GD-77 to the rotary control, because the rotary control gives "Absolute" position, and can't be used to scroll up and down the menus etc.

sfoto
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Re: Port to TYT UV380/UV390

Post by sfoto » Wed May 13, 2020 7:49 am

VK3KYY wrote:
Tue May 12, 2020 11:44 pm
I can see why people are attracted to the RT-3S, because of the low price and the fancy colour screen, however I personally using coloured screens outdoors is a big problem with the very strong sunlight we have here in Australia, hence why I like the GD-77 and other radios with a black and white display.

Its just a shame the display isn't a big larger, because I don't think a colour screen really adds a lot to the usability, but a larger screen does.

I also prefer the Left / Right buttons on the GD-77 to the rotary control, because the rotary control gives "Absolute" position, and can't be used to scroll up and down the menus etc.
RT3 screen can fit more info than GD77 ones, but what eludes me is why chinese wont use transflective displays instead, like Nokia did more than a decade ago and Motorola does in their DMR/P25 lines.

G4EML
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Re: Port to TYT UV380/UV390

Post by G4EML » Wed May 13, 2020 9:26 am

Another problem with colour screens, as demonstrated by the Anytone 868 is that they tend to generate more RF noise than simple monochrome ones. The Anytone suffers with Low sensitivity on VHF because the screen interferes with reception.

VK3KYY
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Re: Port to TYT UV380/UV390

Post by VK3KYY » Wed May 13, 2020 9:51 am

G4EML wrote:
Wed May 13, 2020 9:26 am
Another problem with colour screens, as demonstrated by the Anytone 868 is that they tend to generate more RF noise than simple monochrome ones. The Anytone suffers with Low sensitivity on VHF because the screen interferes with reception.
Thanks Colin.

That's very interesting, I wasn't aware of that drawback.

sfoto
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Re: Port to TYT UV380/UV390

Post by sfoto » Wed May 13, 2020 11:07 am

i'd say CHEAP color screens, as its certainly not the case with bigger radios. but yeah, in MD380 firmware stops updating display for as long as its receiving. and you can even hear it if you put another radio nearby with open squelch.

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