🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 11, 2026) · next update tomorrow 6:00 am CDT
Ask: HAMs within 5 miles of N9TPB · Extra class operators in Madison, WI · or try N9TPB · K9* wildcards · Smith, John · 0004797601 (FRN) · 53703 · Madison, WI · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)
KP4CJZ HAM
✅ Never issued — KP4CJZ isn't in the FCC's public license data (which starts in 1999) or the 1993–2003 callbooks, and nothing in it blocks a vanity request. Calls like this are usually granted when requested.
2x3 call: any licensee can request it.
No pending applications list it.
The FCC has no record of KP4CJZ ever being issued.
KP4CJZ in the Printed Callbooks, 1909–1997
From scanned copies of the printed callbooks (government lists from 1913, then the Radio Amateur Callbook to 1997), read by OCR, so names and streets can carry typos. Each line is one or more editions in a row showing the same name at the same address.
1977 → 1982 · 5 editions KP4CJZ · class A
· later KP4BR
Luis M Diaz 356 Calle Baleares, Puerto Nuevo Winter 1977 p.726, Winter 1979 p.1072, Winter 1980 p.388, 1981 p.320, Winter 1982 p.398
1968 → 1976 · 10 editions KP4CJZ · class A
Luis H Diaz Bloque 72-19, Villa Carolina Spring 1968 p.629, Summer 1969 p.649, Spring 1970 p.627, Winter 1971 p.664, Fall 1971 p.630, Winter 1972 p.636, Winter 1973 p.635, 1974 p.658, Winter 1975 p.628, Winter 1976 p.638
1968 · 1 edition KP4CJZ · class G
Carolina 00630 Winter 1968 p.644
1966 · 1 edition KP4CJZ
Luis M. Diaz J56 Calle Aalearf.s, Puerto Nuevo. Spring 1966 p.564
None · 1 edition KP4CJZ · class A
Luis M Diaz Bloque 72-19, Villa Carolina None p.658