Looking for a RD5R

KA1CM
Posts: 122
Joined: Tue Nov 28, 2023 4:14 pm

Re: Looking for a RD5R

Post by KA1CM » Thu Apr 11, 2024 11:25 am

W1COD wrote:
Wed Apr 10, 2024 4:29 pm
Hi I just listed mine on EBay,

https://www.ebay.com/itm/326081684048?i ... Sw9Q1mEyTZ

John (W1COD)
Thank you for letting me know. However, my budget is set around $60-$70. I can meet you in West Hartford if you can meet my budget. If not, I understand, and thank you again for letting me know.

Charlie, KA1CM

W7ML
Posts: 98
Joined: Sat Jul 17, 2021 12:48 am
Location: Los Angeles, CA USA

Re: Looking for a RD5R

Post by W7ML » Thu Apr 11, 2024 1:02 pm

KA1CM wrote:
Thu Apr 11, 2024 11:25 am
W1COD wrote:
Wed Apr 10, 2024 4:29 pm
Hi I just listed mine on EBay,

https://www.ebay.com/itm/326081684048?i ... Sw9Q1mEyTZ

John (W1COD)
Thank you for letting me know. However, my budget is set around $60-$70. I can meet you in West Hartford if you can meet my budget. If not, I understand, and thank you again for letting me know.

Charlie, KA1CM
How much would you charge me to install the chip on mine? You already have the chip?

KA1CM
Posts: 122
Joined: Tue Nov 28, 2023 4:14 pm

Re: Looking for a RD5R

Post by KA1CM » Thu Apr 11, 2024 3:13 pm

W7ML wrote:
Thu Apr 11, 2024 1:02 pm

How much would you charge me to install the chip on mine? You already have the chip?
I’m not a professional electronics repair person. It just a hobby, I can play with my stuff because I know I won’t sue myself if I messed it up. I’m not comfortable opening up others radios, lots of things can go wrong.

My advice is talk to a telephone repair shop and ask them if they can do it. The chip is very cheap on Amazon.com.

W7ML
Posts: 98
Joined: Sat Jul 17, 2021 12:48 am
Location: Los Angeles, CA USA

Re: Looking for a RD5R

Post by W7ML » Fri Apr 12, 2024 5:20 pm

I sent you an email at your email listed on QRZ.

W7ML
Posts: 98
Joined: Sat Jul 17, 2021 12:48 am
Location: Los Angeles, CA USA

Re: Looking for a RD5R

Post by W7ML » Thu May 02, 2024 11:46 pm

Shout out to Charlie, KA1CM!!

I purchased W1COD's RD-5R on eBay and had it shipped to Charlie for him to update the RAM chip from 1MB to a whopping 16MB, which allows for a full worldwide download of RadioID's to the previously hobbled RD-5R (Radioddity did not want to canabalize sales of their then premiere low-end DMR HT, the GD-77, which had enough RAM for a full download).

He extended his courtesies even more when I swapped him my extra RD-5R in exchange for his RAM upgrades on both my newly acquired RD-5R and my previous AliExpress acquired DM-5R and he threw in a full programmed pi-star HotSpot for me, too!

Next stop: I will be programming my codeplug for my newly acquired Radioddity DB25-D to include Hotspot capability for my round trip drive up to Montana this July in my Chevy Bolt EV, which includes On Star WiFi capability.

Thank you, Charlie!!!

KA1CM
Posts: 122
Joined: Tue Nov 28, 2023 4:14 pm

Re: Looking for a RD5R

Post by KA1CM » Sun May 05, 2024 3:23 pm

You’re very welcome. Have fun with your new toys and have a safe trip to Montana.

DO1BBQ
Posts: 5
Joined: Mon Oct 30, 2023 5:29 pm

Re: Looking for a RD5R

Post by DO1BBQ » Tue Jun 04, 2024 1:09 pm

So you just upgraded the RD-5R memory to 16MB?
I can't solder SMD myself, but a friend of mine.
Did you take pictures of the upgrade process?

I'd love to show this to my friend and ask if he's capable of doing this for both of my RD-5R.

73, Christian, DO1BBQ

KA1CM
Posts: 122
Joined: Tue Nov 28, 2023 4:14 pm

Re: Looking for a RD5R

Post by KA1CM » Tue Jun 04, 2024 6:55 pm

DO1BBQ wrote:
Tue Jun 04, 2024 1:09 pm
So you just upgraded the RD-5R memory to 16MB?
I can't solder SMD myself, but a friend of mine.
Did you take pictures of the upgrade process?

I'd love to show this to my friend and ask if he's capable of doing this for both of my RD-5R.

73, Christian, DO1BBQ
First of you will need a 16Mbyte chip I used 25Q128FVSG
Image

When you have everything ready. Backup flash memory using OpenGD77 CPS.

Then open the radio.

youtu.be/B57bOHrymoU

*** BE CAREFUL OF THE ELECTRO STATIC DISCHARGE!!!!!!! ***
After grounded everything, de solder the old 1Mbyte chip out
Image

Because the new chip is a little bit bigger than the old one. You will need to bend and trim the legs, so it can be align with the pads on the board.
Then, solder the new chip in. *** MAKE SURE THE NEW CHIP SIT ON THE BOARD, THE SPEAKER ON THE OTHER SIDE OF THE CASE WILL PRESS ON THE CHIP AND WILL DAMAGED THE PADS IF THE CHIP DID NOT SEATED PROPERLY ***
Image

If you see "Flash Men Error" when you turn the radio on. That means the radio can not identify the new chip. Check your solder joints.
Image

If everything is good, you will see "Calibration error" on the screen when you turn the radio on. Restore the flash memory from the backup file and you are good to go.

DO1BBQ
Posts: 5
Joined: Mon Oct 30, 2023 5:29 pm

Re: Looking for a RD5R

Post by DO1BBQ » Tue Jun 04, 2024 7:11 pm

Great, thx a lot!
I sent him text, video and pics, maybe he can do it for me.

I love the RD-5R its so tiny and small but works like a charm.
One of my RD-5R is having contact problems with the audio ports, so it has to be opened anyway.
Fells like a f*cked up solder joint, pressing the plug to one side allows programming via the cable.

73, Christian, DO1BBQ

W7ML
Posts: 98
Joined: Sat Jul 17, 2021 12:48 am
Location: Los Angeles, CA USA

Re: Looking for a RD5R

Post by W7ML » Wed Jun 05, 2024 1:27 pm

With this RAM upgrade and OpenGD77, this is the ultimate DMR HT!

I am about to buy the newer high capacity batteries that allow for USB-C charging on the fly!

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