TK 730 channel upgrade

[Kinjete]

Hi, I have 3 TK-730 units, 2 are G series. They are 45 watt with the advanced heads. Currently they are 32 channel. I purchased upgrade chips to make them into 160 channel units. I was also told that along with changing the chips in the transceiver and the control head I also had to remove 2 resistors R33 and R156. When I do this I can not access the radio for programming. I get "ERROR" on the control head and "Model Mismatch" on the computer. I re-install the original chips and resistors and I can again access the programming.

Any help would be great.........

 

[ramal121]

As always, if you read your radio as 32 channel, save it for reference.

When you change the physical eeproms to increase memory, the computer needs to know this in order to read the radio correctly. Your radio is still a 32 channel as far as the read is concerned (notice how on a read the display shows a certain memory size and then counts down until it's done). You're confusing the hell out of the computer.

Do this. Open the computer with a blank archive and enter the first channel. Change the model to advanced control head and 160 channel (and whatever else your radio is). Now write it to the radio. It will give you model mismatch but this is what you want, a new model, so disregard error and write anyway.

Now it knows it is a 160 channel radio and you can read/write no problem. You will have to re-enter the channel programming and stuff, but if it was only 32 channel before that shouldn't be too tough.

 

[Penumbrian]

Are the directions available somewhere on the radio disassembly and installation of the upgrade parts? I got a set of the memory chips but can't find how to do the hardware part of the upgrade, and no information was included with the chips.

 

[lrcrabtree]

TK-730 Programming Problem

I'm having a similar problem. My radio is a TK-730; full control head, VHF-Hi, eeproms for 160 ch (?). Attempts to write to radio results in this error: ERROR! Check Connection. Retry or Cancel. If I try the instructions posted earlier on this thread I get the Model Type Mismatch on the application and an error on the radio LCD. Clear the radio error by pressing KEY 2, click "Ok" to over-write. The I get the same error message as before (Check Connection). No matter what combination I try, I get one of these two results.

Ideas, help?

Larry