W7ISO
Available1x3District 7
Competitive callsign — 5 applications filed with the FCC.
License HolderGRIMSHAW, LAURENCE L
License ClassAdvanced
Min. Class RequiredGeneral
LocationFLORENCE, OR
Grant DateMar 16, 1995
Expiration DateMar 16, 2005
Cancellation DateMar 17, 2007
Available for ApplicationsMar 17, 2007
W7ISO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by GRIMSHAW, LAURENCE L in FLORENCE, OR. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by Steenwyk, Adam J on Aug 19, 2026. W7ISO has 1 recorded FCC license history event.
CW & Voice Analysis
Morse Code
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CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Whiskey Seven India Sierra Oscar
Readability: 6.5/10(Good readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredMar 17, 2007
Vanity Application Activity
Competing applications filed with the FCC for this callsign.