Hi
The service advisory note regarding the 6EX,7C and TM-7 module stated that unique eight digit identification code, in a very small number of cases, may have been incorrectly coded at the manufacturing stage.

My question is, how many individual codes are there, with an eight digit identification code number?

Geoff

if each of the digits can be anything from 0 to 9, then it's 100,000,000 (00000000 through 99999999)

quite a few..

My question is this - what constitutes a "very small number" ? Here's another - who decides what is a "very small number" ? And another - what IS that "very small number" ? It's good that Futaba have 'fessed up - guess they had to really (?!) - but now that they have, why not just come out with the full story. Wouldn't that help to restore confidence in the product ? And here's yet another question - maybe my last (and most important one) on the subject - what do I do when I bought the Futaba radio in the US but now I live overseas (where there's NO Futaba service - in Thailand) - how do I get it checked ? Or where do I have to send it ? MalcolmL

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I am no expert, but I think I would start here if I had concerns.

It's likely binary.

If its 32 bit there's 4billion different combos, 2^32nd power

If its 8 bit then there's 256 2^8th

Hmm even if its binary you still only get one number from a binary combination. Unless they are going with decimal combinations of numbers. Then that would extend the possibilities even more.

I doubt if it's 8 bit binary.. 256 would hardly be enough to be considered "unique".

It is 8 digits. A digit is a digit (0 to 9) and a bit is a bit (0 or 1). The announcement said digit. 10^8 = 100,000,000. That's one hundred million.

Jim O

Well, that's a simple mathematical solution: 10^8 = 100,000,000 unique codes (including the "00000000"\) if you consider numbers 0 to 9 to be valid characters. If you include all the letters (e.g. a code could be "A11R30DF"\), that makes 2,821,109,907,456 unique codes. But then, you can have a mix of these (two first characters can include a letter, others don't, etc).

The minimum would be about 100 million codes.

An 8-digit code would have numbers from "00000000" through "99999999". That's a LOT of codes. When the "00000000" is eliminated, then you have 99,999,999 different codes available to use. That's quite a bit, just a hair under 100 million codes!