Need channel eprom part number, TK-630

[Elighting]

I bought some TK-630H's at HAMvention and they were set up to be the second radio of a dual band setup. I have modified them back to be a single band radio. They were both missing the channel eproms. They have the KCH-5 expanded chip in them,but not the channel prom. What I need is the part number from the service manual. There was a 730H in there too without an eprom,found that number and bought from Kenwood parts and it works just fine. The numbers I'm finding don't seem to be correct. I've been told that the eproms are different between the different bands/configurations.

Jordan.

[ka7wnf]

are talking about the little 8 pin which contains the programming data or the larger EPROM which contains the firmware?

"Here are the numbers for the EPROMs used in 30 series radios. I have found that the newer versions are the same however. I have checked version JPWD and found that FAA, FAB and FAC are the same.


27C256Q-JPWJ FAA SINGLE BAND EPROM TK-630 TK-730 TK-830
27C256Q-JPXJ FAD DUAL HEAD EPROM TK-630 TK-730 TK-830
27C256Q-JPYJ FAB DUAL BAND RADIO 1 EPROM TK-630 TK-730 TK-830
27C256Q-JPZJ FAC DUAL BAND RADIO 2 EPROM TK-630 TK-730 TK-830

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I am talking about the larger eprom. Not being that familiar with the 30 series,I don't know which is which. Are the eproms just setup(DH/DB) specific or are they band(LB/VHF/UHF) specific? The eprom I bought for my 730 lists for $24.xx not the $35.xx that you listed, so just wondering. I'll get the part number that I bought and show you.

Jordan,TCFD

[ka7wnf]

Band doesn't matter. That price was what kenwoodparts.com showed. There are differently labelled EPROMS for dual band or dual head setups, but I read some that I have with an EPROM programmer and they were identical. It was a fairly new version but not the newest.

[Elighting]

The part number I found was 27C256BQ-JBY2 which is discontinued and replaced with 27C256QJPWJ which lists for $21.88. The description says IC (256K EPROM / FUJITSU) TK-830. The part number I have came out of the TK-730 book. There is a different part number for the same eprom in the 830 book. The eprom I have listed,as I said I bought and put in a 730H and it works fine. Your saying I could buy this same eprom and it will work in an 830 or 630? I don't understand the difference between what you listed and what eprom I have. Just trying to do it the cheapest,without letting the smoke out.Thank you.

Jordan.

[ka7wnf]

It won't hurt your radio.