Hi Greet Jan,
Ok, Interesting topic the J mark. I'm not an expert but will tell you what I know about it
1. That's correct, radio sold in Japan for amateur bands will only transmit in Japanese band plan (ie, 433-440mhz on 2m, not the same as US or other countries)
2. Not fully correct, It will depend on the radio really but some radios sold in Japan can be "mod" to transmit outside Japanese amateur bands, some radios by removing diode, resistors, jumpers or via service menus.
3. Not necessary, the J mark is a voluntary pseudo restrictions agree between some manufacturer back in the 90' when was easier to "mod" a radio and transmit in commercial frequency (mainly 144/433/1200/2400) and cause problems, hence the radio "J Mark" where not easy to change the band designed for (not impossible), also some manufactures like Alinco left and doesn't put J mark anymore I think.
4. The TSS certification is a government mandatory requirement for equipment that transmit radio waves, "big" manufactures certify theirs equipment and put the certification ID on a label on each radio sold in Japan, keep in mind some models change on manufacture years and could been certified and obtain a different ID, they general publish this on their websites.
The J Mark (small J inside a triangle) is an agreement between some manufactures to said this radio is 'restricted' to Japan amateur band, not a government official requirement
5. Any radio without TSS certification mark need to be certified, regardless if Yaesu has "similar" model in Japan already certified (ie, FT-818nd), true that a EU/UK FT-818nd will transmit on different 2m and that's not allowed here so will not pass, but some radios allow you to change diodes or software to restrict the band/power they transmit so then could pass the TSS certification, again, this will be depend the radio of course
6. The TSS certification is for _any_ radio that operate in Japan, I believe that should apply for permanent or temporary licenses. The TSS certification is for radio transmitters, isn't a requirement to obtain a license, however license category in Japan are related to power/mode you are allowed to, if when I apply for a mobile license I will declare will use an IC-705 (10W V/U) and then I decide to obtain a ID-5100D (50W V/U) I need to request an updated license to reflect the new transceiver? ?
Well, I hope these details help (or confuse your more HIHI)
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73
Emilio, JK1MBT
