Logbook of the World
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Frequently Asked Questions

1. About Logbook of the World 2. Getting Started 3. Callsigns and Callsign Certificates 4. Submitting QSOs 5. QSOs, Confirmations, Award Credits, and Personal Information

 

1. About LoTW

 

How do I get started?

Here are step-by-step instructions and a flowchart.

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Must I be an ARRL member to use LoTW?

No. Anyone can submit log data to LoTW. While U.S. Amateurs must be ARRL members to apply for DXCC, WAS, or VUCC awards, amateurs residing outside the U.S. can participate in these awards without being ARRL members.

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How much does it cost to use Logbook of the World?

There is no charge obtaining a Callsign Certificate or submitting QSOs to LoTW. A charge is levied only when you apply for an award using QSOs confirmed via LoTW. The fee structure for each award is described in the appplication instructions:

Note that a charge is also levied when you apply for an award using QSOs confirmed via QSL cards.

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How do DXpeditioners participate?

DXPeditions can obtain a Callsign Certificate and use it to submit their QSOs to LoTW.

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How does LoTW prevent false data from being submitted?

Every QSO submitted to LoTW can be traced via a Callsign Certificate to an authenticated user.

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Why are there so many different passwords?

If you're licensed in the United States, you'll be sent a postcard password when you request your first Callsign Certificate. This password is used to verify that you reside at the address on file with the Federal Communications Commission; it can be discarded after you receive your Callsign Certificate.

Your Callsign Certificate will arrive attached to an email message that contains the username and password that enable you to login to your LoTW Web Account. So that's one set of credentials you must be able to produce when necessary.

When you request a Callsign Certificate that will reside on a shared or public computer, LoTW's security policy expects you to specify a password when you request that Callsign Certificate. If you password-protect a Callsign Certificate in this way, you must provide the password whenever you use the Callsign Certificate to submit QSOs to LoTW. Thus each password-protected Callsign Certificate's password must also be remembered. If every computer you use to submit QSOs to LoTW is under your physical control and not publicly accessible, however, password-protecting your Callsign Certificates is not required.

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I know someone is submitting false data. What should I do?

Please contact LoTW administration at lotw-help@arrl.org.

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What are "TQSL" and "Trusted QSL?"

TQSL is a free application provided by the LoTW to submit QSOs to LoTW,  manage Callsign Certificates, and manage Station Locations. TrustedQSL is a specification for digitally signed QSO records, which are used to submit QSO data to LoTW. 

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Why does my personal security scanning application identify TQSL or TrustedQSL as spyware?

Personal security scanning applications occasionally report "false positives".

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2. Getting Started

 

Must I be a member of ARRL to submit QSOs?

No; anyone may submit QOs to LoTW. U.S. Amateurs must be ARRL members in order to apply for DXCC, VUCC, WAS, and WPX awards.

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Must I have access to the World Wide Web or email?

Yes: your Callsign Certificate is delivered via email, and your LoTW Web Account is used to view confirmations and apply for awards

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What software and hardware do I need?

You will need an application that can digitally sign QSOs and submit them to LoTW. The ARRL provides a free application that does this: TQSL, which can be used with computers running Windows, OS-X, or Unix. Many logging applications can also digitally sign QSOs and submit them to LoTW.

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Where do I get TQSL?

TSL is available here.

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Can I use more than one computer?

Yes; TQSL makes it easy to copy your Callsign Certificates and Station Locations to another computer so you can submit QSOs from there. 

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Must I send a copy of my license to the ARRL?

As shown in this flowchart, it is only necessary to submit a copy of your operating authorization if you are requesting your first Callsign Certificate for a callsign not issued by the United States Federal Communciation Commission.

Note: Obtaining a Callsign Certificate for a callsign in certain DXCC entities also requires submission of a Landing Permit and/or Proof of Entry.

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If I operate from a DXCC entity where the ARRL DXCC desk requires documentation, at what point in the start-up process should I submit it?

As shown in this flowchart, you'll receive an email message asking you send documentation to the ARRL.

Note: Obtaining a Callsign Certificate for a callsign in certain DXCC entities also requires submission of a Landing Permit and/or Proof of Entry.

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I received an error message saying the postal address in my Callsign Certificate request doesn't match FCC records. What should I do?

If your primary callsign was issued in the United States but the postal address registered with the Federal Communications Commission (FCC) is not current, update it via the FCC ULS website and then repeat your request for a Callsign Certificate.

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I submitted a request for a Callign Certificate but never received it. What should I do?

Within two days, you should receive a message sent to the email address you specified in the Callsign Certificate request. If you don't, verify that your request was actually sent, and was addressed correctly. Also check your email application's spam folder for the response. If none of those factors explain the lack of a response, send a message to lotw-help@arrl.org asking for assistance.

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I received a response to my Callsign Certificate request saying my Callsign Certificate would be sent separately, but I never received it. What should I do?

Within two days, you should receive a message sent to the email address you specified in the Callsign Certificate request. If you don't, verify that your request was actually sent, and was addressed correctly. Also check your email application's spam folder for the response. If none of those factors explain the lack of a response, send a message to lotw-help@arrl.org asking for assistance.

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I lost the postcard with my "postcard password". What should I do?.

If you have lost your postcard password, or did not receive a postcard, send an email to lotw-help@arrl.org, requesting that new postcard be sent. LoTW staff cannot give you this password by any other means than postal mail.

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I can't login to my LoTW Web Account. What should I do?.

The email message that conveyed your first Callsign Certificate also contains the username and password you must use to log into your LoTW Web Account. Note that these are not the same as your ARRL Web site members-only username and password.

If you've lost your LoTW Web Account username, send an email to lotw-help@arrl.org.

If you've lost your LoTW Web Account password, you can obtain a new one via the Forgot Password web page; on this page, specify your username and email address, and then click the Forgot Password button. Within 10 minutes, you'll receive an email message with a new password.

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TQSL does not seem to be working correctly. What should I do?

Please submit defect reports with an email message to lotw-help@arrl.org that includes the version of TQSL you're using, and a description of what's not working correctly.

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3. Callsigns and Callsign Certificates

 

How do I complete the QSO date ranges on the Callsign Certificate request for my present callsign?

As shown here, set the QSO begin date to the date your present callsign was first used over the air, and leave the QSO end date blank.

If you request a Callsign Certificate whose date range overlaps that of an already-issued Callsign Certificate for the same callsign, your request will be rejected. If you believe an already-issued Callsign Certificate has an incorrect date range, please send an email message describing the details to lotw-help@arrl.org.

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I have an old callsign or two, and I would like to submit QSOs made with those QSOs to LoTW. How do I do that?

After you've requested and received a Callsign Certificate for your current station callsign, you can request and receive a Callsign Certificate for each of the station callsigns that you've used in the past. 

After receiving and accepting each such Callsign Certificate, define a Station Location that references it, and use that Station Location to submit the QSOs you made with that callsign.

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How do I complete the QSO date ranges on the Callsign Certificate request for one of my old callsigns?

As shown here, set the QSO begin date to the date this old station callsign was first used over the air, and set the QSO end date to the day after the last date this old station callsign was last used over the air.

If you request a Callsign Certificate whose date range overlaps that of an already-issued Callsign Certificate for the same callsign, your request will be rejected. If you believe an already-issued Callsign Certificate has an incorrect date range, please send an email message describing the details to lotw-help@arrl.org.

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I changed my current primary callsign. Do I need another Callsign Certificate? Will I still be able to access my QSOs submitted with the previous Callsign Certificate?

Yes. Request an additional Callsign Certificate:

  • in step 3.e.1, select signed
  • in step 3.e.3, choose the Callsign Certificate for your current callsign

Inform the ARRL of your new callsign by submitting this form. You will receive an email message informing you to begin using your new callsign as the username with which to log in to your LoTW Account; your LoTW Account password will not change.

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Someone else has been issued my old callsign. I would like to submit QSOs made with that old callsign to LoTW. How can I do that?

You'll need a Callsign Certificate for your current callsign, if you don't have one already. Then request a Callsign Certificate for your old callsign. In the request, set the QSO begin date to the date you first used the old callsign over the air, and set the QSO end date to the day after the last date you used this old station callsign over the air. After receiving and accepting your Callsign Certificate, define a Station Location that references it, and use that Station Location to submit the QSOs you made with that callsign.

If you request a Callsign Certificate whose date range overlaps that of an already-issued Callsign Certificate for the same callsign, your request will be rejected. If you believe an already-issued Callsign Certificate has an incorrect date range, please send an email message describing the details to lotw-help@arrl.org.

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I have another callsign in another country.   What must I do to submit QSOs made with that callsign from that country?

You'll need a Callsign Certificate for your current callsign, if you don't have one already. Then request a Callsign Certificate for the callsign in the other country . In the request, set the QSO begin date to the date you first used that callsign over the air from the other country. If that callsign is still valid, leave the QSO end date blank; otherwise, set the QSO end date to the day after the last date you used that callsign over the air from the other country. After receiving and accepting your Callsign Certificate, define a Station Location that references it, and use that Station Location to submit the QSOs you've made with that callsign from the other country.

If you request a Callsign Certificate whose date range overlaps that of an already-issued Callsign Certificate for the same callsign, your request will be rejected. If you believe an already-issued Callsign Certificate has an incorrect date range, please send an email message describing the details to lotw-help@arrl.org.

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I operated from a country where a reciprocal operating agreement eliminates the need to obtain an additional license. What must I submit for authentication?

LoTW recognizes known reciprocal operating agreements, including those among the countries participating in the CEPT (European Conference of Postal and Telecommunications Administration) agreement, and the IARP (International Amateur Radio Permit) Convention. In most cases it will not be necessary to supply additional documentation to obtain a certificate. However, some DXCC countries that fall within these agreements -- Crozet Island, for example -- will require supporting documentation. To learn more, send email to lotw-help@arrl.org

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I am trying to get a Callsign Certificate for my present U.S. callsign, which begins with an A (like AA9AK). When I submit the request, I receive a message from LoTW that says the request has date errors. What should I do?

The United States Federal Communications Commission. did not issue callsigns beginning with A until after 1976, so a Callsign Certificate request with a QSO begin date before then will be rejected. Set the QSO begin date to the first date you used your callsign over the air.

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I used the same callsign from several different places within the same DXCC entity, without signing "portable". Must I get separate Callsign Certificates for each place?

No, one Callsign Certificate for the callsign you used within the entity is sufficent. Define a Station Location for each of the places from which you operated, and reference the Callsign Certificate in each of these Station Locations. Appropriately naming each Station Location will make it easier to choose the correct one when you submit a group of QSOs made from one place to LoTW.

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I operated from several places the same DXCC entity, signing with different portable designators in each place. Do I need a separate Callsign Certificate for each place?

You must request a Callsign Certificate for each station callsign you used  over the air within the entity. If you used 6W6RY, 6W6RY/1, and 6W6RY/2, then request Callsign Certificates for each of these three callsigns.

Define a Station Location for each of the places from which you operated, and reference the correct Callsign Certificate in each of these Station Locations. Appropriately naming each Station Location will make it easier to choose the correct one when you submit a group of QSOs made from one place to LoTW.

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I am a QSL Manager. Must I obtain separate Callsign Certificates for each callsign I manage? Are there other requirements for me and my client(s)?

Yes. Each of your clients must convey their approval to the ARRL for you to obtain Callsign Certificates on their behalf. A client who resides outside the United States should include a copy of his or her license and one other official document, such as a driver's license.

After receiving approval, use the Callsign Certificate for your callsign to request Callsign Certificates for each of your clients. If there are unusual circumstances, describe them in an email message to lotw-help@arrl.org.

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How do I get a Callsign Certificate for a club callsign?

To keep club records separate from your own, your request for a Callsign Certificate should be made as if you were requesting an initial Callsign Certificate for the club's callsign. The sequence of events illustrated here will ensue. For clubs based in the United States, the postcard will be sent to the FCC-listed mailing address for the club's trustee; if you are not the trustee, make arrangements to obtain the postcard.

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How often must I renew my Callsign Certificate?

Your Callsign Certificate is valid for three years, and can easily be renewed at any time before it expires.. You may renew your certificate at any time, but you must renew it every three years. TQSL will begin alerting you 60 days before one for your Callsign Certificates expires, and the the ARRL will send you an email message approximately one month before one of your Callsign Certicates expires.

If a Callsign Certificate expires before you renew it, you'll have to go through the process of requesting and accepting a new one.

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Why must Callsign Certificates expire?

Should a Callsign Certificate be compromised, its expiration may help expose the situation.

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My Callsign Certificate expired; must I get a new Callsign Certificate?

If you did not renew your Callsign Certificate before it expired, then yes, you must request a replacement.

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My Callsign Certificate expired; must I resubmit my license and proof of identity?

No. You must request a replacement Callsign Certificate, but you will not be required to resubmit documentation.

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How do I inform LoTW that my email address has changed?

Follow the Changing your Notification Email Address instructions.

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My computer crashed. Can I get a new Callsign Certificate?

If you previously directed TQSL to create a backup file and have access to that backup, then recovery of your Callsign Certificate is straightforward.

If you don't have access to a backup file, you must request a new Callsign Certificate.

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I put the wrong start or end date on my Callsign Certificate request. What should I do?

Direct TQSL to renew the Callsign Certificate with the incorrect date range; in step 8 of this procedure, specify the correct QSO begin date and QSO end date. Do not delete the Callsign Certificate with the incorrect date range; it will automatically be removed when the "renewed" Callsign Certificate arrives and is accepted in step 18.

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4. Submitting QSOs

 

Does ARRL offer a stand-alone application to submit QSOs to LoTW?

Yes: TQSL runs on Windows, OS-X, and Linux systems, and is free.

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What logging applications can I use to submit QSOs to LoTW?

You can use any logging application that can export your QSOs in ADIF or Cabrillo format.

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Can I send my log on a diskette or CD-ROM to LoTW instead of via email?

Possibly. Inquire via an email message to lotw-help@arrl.org, or via postal mail to

LoTW Administrator, 225 Main St., Newington, CT 06111.

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How do I submit QSOs I've already logged?

If the QSOs were all made from the same geographic location using the same station callsign, you can submit them with a Station Location for that location and Callsign Certificate.

If you have one set of logged QSOs made from one place and another set of logged QSOs made from a second place -- all made with the same station callsign -- then define a Station Location for each place, with both Station Location's referencing the same Callsign Certificate. Submit the logged QSOs made from the first place using the Station Location for that place, and submit the logged QSOs made from the second place with the Station Location for that place.

If you have one set of logged QSOs made with one station callsign and another set of logged QSOs made with a second station callsign -- all made from the same location -- then define two Station Locations: one referencing the Callsign Certificate for the first station callsign, and the othe referencing the Callsign Certificate for the second station callsign. Submit the logged QSOs made with the first station callsign using the first Station Location, and submit the logged QSOs made with the second station callsign using the second Station Location.

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How should I submit QSOs when I operated with /QRP, /LH, or some other suffix appended to my callsign?

Submit your QSO to LoTW using the Callsign Certificate for the callsign that you used over-the air. If you operated as P5DX/QRP, for example, then submit your QSOs with a Callsign Certificate whose callsign is P5DX/QRP.

Note: some DX and contest stations won't log non-standard suffixes like /QRP or /LH or the three-letter county abbreviations used when activating a US county. If you submit your QSO using a Callsign Certificate whose callsign specifies one of these non-standard suffixes but don't receive a timely confirmation, try resubmitting your QSO using a Callsign Certificate whose callsign omits the suffix.

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How do I manage my logged QSOs?

Logging applications provide this capability. Otherwise, you'll have to employ a naming convention that helps you keep track of which QSOs have been submitted to LoTW and which have not. TQSL will refuse to submit QSOs that have already been submitted to LoTW, but you should avoid asking it to do so.

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Must I have submit my contest log to both the contest robot and to LoTW?

Yes. LoTW does not automatically forward contest logs to contest sponsors

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Can I use LoTW to confirm SWL reports?

No. LoTW only accepts amateur call signs and information from both participants in a QSO must be submitted to achieve a confirmation.

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How do my rover logs and their associated grid squares or other geographical data stay associated in LoTW?

Define a Station Location for each new place (grid square) from which you operated, and use that Station Location to submit the QSOs you made from that location.

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Can I convert my contest logs for LoTW?

You can submit contest logs to LoTW in Cabrillo format, so no "conversion" is required. Note that you must still submit your contest log to the contest sponsor, as LoTW does not do this on your behalf.

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My Callsign Certificate password doesn't work. What should I do?

If your Callsign Certificate is password-protected but you can not produce the correct password, you must request a replacement Callsign Certificate.

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I forgot the password for my Callsign Certificate. What do I do?

If your Callsign Certificate is password-protected but you can not produce the correct password, you must request a replacement Callsign Certificate.

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TQSL reports "Callsign Certificate QSO date out of range on line nnn" What should I do?

Your Callsign Certificate specifies a date range. If you direct TQSL to submit QSOs whose dates lie outside the range specified in the Callsign Certificate, you will be informed with the above error message that those QSOs won't be submitted.

If your Callsign Certificate's date range is incorrect, you can request a Callsign Certificate with a orrected date range.

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5. QSOs, Confirmations, and Award Credits

 

How can I review the QSOs I've submitted and check for matches?

Follow this procedure.

Some logging applications will update your logged QSOs to reflect acceptance and confirmation by LoTW.

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What constitutes a QSO "match?"

Two submitted descriptions of a QSO match if

  • your QSO description specifies a callsign that matches the Callsign Certificate specified by the Station Location your QSO partner used to digitally sign the QSO
  • your QSO partner's QSO description specifies a callsign that matches the Callsign Certificate specified by the Station Location you used to digitally sign the QSO
  • both QSO descriptions specify start times within 30 minutes of each other
  • both QSO descriptions specify the same band
  • both QSO descriptions specify the same mode (an exact mode match), or must specify modes belonging to the same Mode Group
  • for satellite QSOs, both QSO descriptions must specify the same satellite, and a propagation mode of SAT

A confirmed QSO's DXCC entity, grid squares (up to 4), and US State are specified by the Station Location your QSO partner used to digitally sign the QSO. You can view this information via your LoTW Account, or your logging application may be able to obtain it for you.

All LoTW confirmations are valid for DXCC awards. Only LoTW confirmations with one or more grid squares are valid for VUCC awards, and only LoTW confirmations with a US State are valid for WAS awards. Some WAS and WPX awards require a confirmation with an exact mode match. You can ask your QSO partner to re-submit a confirmed QSO that is digitally signed with a Station Location that contains additional information so that the confirmation will become valid for VUCC and/or WAS awards.

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Can I see if any of the stations I worked have submitted their log data?

Yes, using this procedure.

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I see that a station for which I need to confirm a contact has submitted his or her log, but my QSO with this station is not confirmed. What should I do??

Contact your QSO partner.LoTW staff cannot assist you in this circumstance.

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Can I delete QSOs that I've submitted?

No. If you've submitted a QSO containing erroneous information, correct the information and submit the QSO again.

If you've submitted multiple QSOs with a Station Location that contains erroneous information, correct the Station Location, and use the corrected Station Location to submit those QSOs again.

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Can I prevent anyone else from seeing my submitted QSOs?

Only someone with access to your LoTW Web Account can view your submitted QSOs. By not sharing your LoTW Web Account username and password, you can maintain the privacy of your submitted QSOs.

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What awards are supported by LoTW?

LoTW supports the DXCC, VUCC, WAS, and WPX awards.

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How can I view my Award Credits?

Choose the appropriate procedure:

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Instead of paying on-line, may I telephone with my credit card info? Will credit card information be saved?

The online application for each award permits credit card information to be conveyed by telephone. Credit card information is not saved.

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6. Modes

 

What emission modes are supported by LoTW?

LoTW supports the emission modes allowed by the ADIF specification with the exception of "ASCI" (ASCII is a character set, not an emission mode). Each mode is associated with a MODE GROUP for the purpose of matching QSOs. The modes currently accepted by LoTW are:

 

Mode Mode Group
CW CW
PHONE PHONE
IMAGE IMAGE
DATA DATA
AM PHONE
FM PHONE
SSB PHONE
ATV IMAGE
FAX IMAGE
SSTV IMAGE
AMTOR DATA
CHIP DATA
CLOVER DATA
CONTESTI DATA
DOMINO DATA
FSK31 DATA
FSK441 DATA
GTOR DATA
HELL DATA
HFSK DATA
ISCAT DATA
JT4 DATA
JT65 DATA
JT6M DATA
JT9 DATA
MFSK16 DATA
MFSK8 DATA
MINIRTTY DATA
MT63 DATA
OLIVIA DATA
OPERA DATA
PACKET DATA
PACTOR DATA
PAX DATA
PSK10 DATA
PSK125 DATA
PSK2K DATA
PSK31 DATA
PSK63 DATA
PSK63F DATA
PSKAM DATA
PSKFEC31 DATA
Q15 DATA
ROS DATA
RTTY DATA
RTTYM DATA
THOR DATA
THROB DATA
VOI DATA
WINMOR DATA
WSPR DATA

Note that TQSL can map unaccepted modes in an ADIF file to modes that are accepted.

 

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7. Satellites

What satellites are supported by LoTW?

 

ID Name
AO-10 AMSAT-OSCAR 10
AO-13 AMSAT-OSCAR 13
AO-16 AMSAT-OSCAR 16
AO-21 OSCAR 21/RS-14
AO-24 Arsene-OSCAR 24
AO-27 AMRAD-OSCAR 27
AO-3 AMSAT-OSCAR 3
AO-4 AMSAT-OSCAR 4
AO-40 AMSAT-OSCAR 40
AO-51 AMSAT-OSCAR 51
AO-6 AMSAT-OSCAR 6
AO-7 AMSAT-OSCAR 7
AO-73 AMSAT-OSCAR 73
AO-8 AMSAT-OSCAR 8
AO-85 AMSAT-OSCAR 85 (Fox-1A)
ARISS ARISS
CAS-3H LilacSat 2
DO-64 Delfi OSCAR-64
FO-12 Fuji-OSCAR 12
FO-20 Fuji-OSCAR 20
FO-29 Fuji-OSCAR 29
HO-68 Hope OSCAR 68
LO-19 Lusat-OSCAR 19
LO-78 LituanicaSAT-1
NO-44 Navy-OSCAR 44
RS-1 Radio Sputnik 1
RS-10 Radio Sputnik 10
RS-11 Radio Sputnik 11
RS-12 Radio Sputnik 12
RS-13 Radio Sputnik 13
RS-15 Radio Sputnik 15
RS-2 Radio Sputnik 2
RS-5 Radio Sputnik 5
RS-6 Radio Sputnik 6
RS-7 Radio Sputnik 7
RS-8 Radio Sputnik 8
SO-35 Sunsat-OSCAR 35
SO-41 Saudi-OSCAR 41
SO-50 Saudi-OSCAR 50
SO-67 Sumbandila OSCAR 67
UO-14 UOSAT-OSCAR 14
VO-52 VUsat-OSCAR 52
XW-2A Hope 2A
XW-2B Hope 2B
XW-2C Hope 2C
XW-2D Hope 2D
XW-2E Hope 2E
XW-2F Hope 2F

 

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