The Federal Communications Commission (FCC) has granted a total of 133 licenses and call signs in the category of Amateur license in Isabela, Puerto Rico. Select a call sign from the table below to view its details such as the date of authorization, expiration date, service description, and so forth.
| Call Sign | License Holder Name | Date of Authorization |
|---|---|---|
| WP4SFA | DIAZ RODRIGUEZ, GILFREDO | 2022-03-07 |
| WP4SFG | CARRERO MERCED, CARMEN I | 2022-03-07 |
| WP4SFH | RODRIGUEZ CABAN, ANTONIO G | 2022-03-07 |
| WP4SFO | CORDERO CORDERO, ANGEL J | 2022-03-07 |
| WP4SHY | CAMINANTES INTERNACIONALES AMATEUR AND CB CLUB | 2022-05-13 |
| WP4SID | LUGO CABAN, JOSE M | 2022-06-01 |
| WP4SJK | VELEZ CONCEPCION, ORLANDO | 2022-06-14 |
| WP4SLQ | Gonzalez Jimenez, Javier | 2022-07-06 |
| WP4SME | ALVAREZ FERNANDEZ, JULIO L | 2022-07-19 |
| WP4SMG | MERCADO MALDONADO, JOSE R | 2022-07-19 |
| WP4SMJ | ALTRECHE ESPONDA, HERIBERTO | 2022-07-19 |
| WP4SMR | MARTINEZ RAMOS, EDGARDO | 2022-07-20 |
| WP4SNB | CORDERO MUNIZ, ANTONIO G | 2022-07-26 |
| WP4SND | CAMACHO, FRANCISCO | 2022-07-26 |
| WP4SNJ | AVILES VELEZ, AWILDA | 2022-07-26 |
| WP4SNL | BRACERO CRUZ, VICTOR J | 2022-07-28 |
| WP4SNM | COLLAZO, RAYMOND | 2022-07-28 |
| WP4SNN | GUZMAN CRUZ, ANTONIO J | 2022-07-28 |
| WP4SNP | MUNIZ DEL VALLE, ISABEL M | 2022-07-28 |
| WP4SNQ | GONZALEZ VELAZQUEZ, AURELIO | 2022-07-28 |
| WP4SQZ | PRATTS PONCE, GOMBAL | 2022-11-08 |
| WP4SRC | RAMOS LOPEZ, MIGELINA | 2022-11-08 |
| WP4SRD | RAMOS MUNIZ, MARICELI | 2022-11-08 |
| WP4SRE | RAMOS LOPEZ, LUIS A | 2022-11-08 |
| WP4SRF | ECHEVARRIA CRUZ, NELSON | 2022-11-08 |
| WP4SRG | VELEZ SERRA, ANGEL L | 2022-11-08 |
| WP4SRH | ROMAN, JUAN C | 2022-11-09 |
| WP4SRJ | SANTANA GONZALEZ, JORGE L | 2022-11-09 |
| WP4SRK | RIVERA, DEIKA M | 2022-11-09 |
| WP4SSD | MIRANDA SERRANO, ANNETTE A | 2022-11-24 |
| WP4SSE | MIRANDA SERRANO, MILDRED L | 2022-11-24 |
| WP4SSF | Beetz, Michael P | 2022-12-06 |
| WP4STE | Mangual, Jose E | 2023-03-03 |
