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# Installing a Logbook of The World Certificate

Use of Logbook of The World requires that each user have one or more secure certificates issued by the ARRL to sign their logs. These certificates can be requested within Aether. After the request is approved, the ARRL will email you with certificate file. To begin using it, you must install it. This page gives instructions on installing LoTW certificates using Aether.

To install a Logbook of The World certificate:

1. Save the file the ARRL emailed to you to a convenient location, such as your Desktop.
2. Open Aether preferences by choosing "Preferences" from the Aether menu.
3. Select the QSL tab in the Preferences window.
4. Click the "Manage Certificates…" button.
5. A window will appear showing the certificates installed on your computer. This list will be empty if you do not have any installed certificates.
6. Click the "Import…" button.
7. Browse to and select the certificate file saved in step 1, then click "Open"
8. If you created a password for your certificate when you requested it, you will be prompted to enter the password.
9. If your certificate was successfully imported, you'll see it appear in the list of installed certificates.

## See also

Requesting a Logbook of The World Certificate
Logbook of The World Topics
Online QSL Topics