Ham Clock
9.1 17
v05.11 by Zoran
About HamClock
HamClock (Package Name: cc.kostic.hamclock) is developed by Zoran and the latest version of Ham Clock 05.11 was updated on July 4, 2025. Ham Clock is in the category of Tools. You can check all apps from the developer of Ham Clock and find 200 alternative apps to Ham Clock on Android. Currently this app is for free. This app can be downloaded on Android 8.0+ on APKFab or Google Play. All APK/XAPK files on APKFab.com are original and 100% safe with fast download.
HamClock is targeted for portable amateur radio operators.
It displays time/date and user notes related to various portable locations on a single screen:
- Local date / time
- GMT date / time
- User notes
- Reminder to transmit callsign every 10 minutes, as required in some countries.
Note can be entered in up to four fields. Use it to record location name, QTH locator, callsign, activation details for SOTA, WCA, WFF or other activities, event info etc.
Multiple notes can be entered and saved for later use.
Note view is scrolled to show longer texts
Hide local clock, leaving even more room for notes
- Large font and contrast for readability in bright daylight
- Light / dark color scheme
- Configurable date and time format, including seconds
- Configurable display timeout
- Optional popup every 10 minutes to remind you to transmit your callsign
- Optional notification played along with the visual reminder
- Share note content as a simple text file, formatted as JSONArray (string). Extension is .hctxt (HamClockTxt) but can be edited in any text editor.
Sharing works best via Gmail or GoogleDrive. With Gmail, open/receive directly from an attachment (no need to download the attachment first). If proper JSONArray file format is detected, "save or discard note" is offered.
Sharing via Bluetooth is less reliable on different devices, because android versions and phone vendors vary in trusted file types for BT transfers, and in permissions needed to access bluetooth storage space (received files).
Sharing via other applications is not tested, and it may or may not work.
PRIVACY / DISCLAIMER
This app does not collect any personal data or share anything with anyone.
There are NO ads.
It displays time/date and user notes related to various portable locations on a single screen:
- Local date / time
- GMT date / time
- User notes
- Reminder to transmit callsign every 10 minutes, as required in some countries.
Note can be entered in up to four fields. Use it to record location name, QTH locator, callsign, activation details for SOTA, WCA, WFF or other activities, event info etc.
Multiple notes can be entered and saved for later use.
Note view is scrolled to show longer texts
Hide local clock, leaving even more room for notes
- Large font and contrast for readability in bright daylight
- Light / dark color scheme
- Configurable date and time format, including seconds
- Configurable display timeout
- Optional popup every 10 minutes to remind you to transmit your callsign
- Optional notification played along with the visual reminder
- Share note content as a simple text file, formatted as JSONArray (string). Extension is .hctxt (HamClockTxt) but can be edited in any text editor.
Sharing works best via Gmail or GoogleDrive. With Gmail, open/receive directly from an attachment (no need to download the attachment first). If proper JSONArray file format is detected, "save or discard note" is offered.
Sharing via Bluetooth is less reliable on different devices, because android versions and phone vendors vary in trusted file types for BT transfers, and in permissions needed to access bluetooth storage space (received files).
Sharing via other applications is not tested, and it may or may not work.
PRIVACY / DISCLAIMER
This app does not collect any personal data or share anything with anyone.
There are NO ads.
HamClock 05.11 Update
UI: - day/night themes, 4 panels, custom fonts, hh:mm:ss, resizable fields.Notes: - max 100 notes.
Other: stability, RoomDb, latest api, handle startup issue
Read More
HamClock Features
Previous Versions
More
Variant
Arch
Version
DPI
511
June 18, 2025
Ham Clock
05.11
(511)
Requires Android: Android 8.0+
Screen DPI: 160-640dpi
SHA1: 49bcd3d8d96ed3d5ba3da3df3393dff917ea5fb7
Base APK: cc.kostic.hamclock.apk
Split APKs: config.ar, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xhdpi, config.zh
Size: 2.49 MB
What's New:
UI: - day/night themes, 4 panels, custom fonts, hh:mm:ss, resizable fields.
Notes: - max 100 notes.
Other: stability, RoomDb, latest api, handle startup issue
Notes: - max 100 notes.
Other: stability, RoomDb, latest api, handle startup issue
Android 8.0+
160-640dpi
511
July 1, 2025
Ham Clock
05.11
(511)
Requires Android: Android 8.0+
Screen DPI: 160-640dpi
SHA1: 3420919d94d43acaccdbd76799d8867ca35ae0b6
Base APK: cc.kostic.hamclock.apk
Split APKs: config.ar, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xxxhdpi, config.zh
Size: 2.5 MB
What's New:
UI: - day/night themes, 4 panels, custom fonts, hh:mm:ss, resizable fields.
Notes: - max 100 notes.
Other: stability, RoomDb, latest api, handle startup issue
Notes: - max 100 notes.
Other: stability, RoomDb, latest api, handle startup issue
Android 8.0+
160-640dpi
511
July 4, 2025
Ham Clock
05.11
(511)
Requires Android: Android 8.0+
Screen DPI: 160-640dpi
SHA1: c6e5582592e086baa02745f148203edcf746c6eb
Base APK: cc.kostic.hamclock.apk
Split APKs: config.ar, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xxhdpi, config.zh
Size: 2.5 MB
What's New:
UI: - day/night themes, 4 panels, custom fonts, hh:mm:ss, resizable fields.
Notes: - max 100 notes.
Other: stability, RoomDb, latest api, handle startup issue
Notes: - max 100 notes.
Other: stability, RoomDb, latest api, handle startup issue
Android 8.0+
160-640dpi
Requires Android: Android 4.1+
Screen DPI: 120-640dpi
SHA1: 5e4c6a1f5216a8a4c672ef129e650706b8d429b8
Size: 2.46 MB
What's New:
Minor stability improvements
Compile and support for Android 9
Date format YYYY-MM-DD according to ISO 8601
Compile and support for Android 9
Date format YYYY-MM-DD according to ISO 8601
Requires Android: Android 7.0+
Screen DPI: 160-640dpi
SHA1: 1617522c742054fb9fbee38fff60e37c5c58bb53
Size: 1.47 MB
What's New:
*4.03*
**Sharing notes: fixed crash on Android 7+ thanks to firebase crash analytics
- Importing notes works best from G Drive or Gmail (don't save attachment)
Due to low standardization, others give different results per device, android version etc. Your mileage _will_ vary
- App imports note as plaintext if JSON format fails
- Types pdf, jpg, gif..silently discarded
*4.02*
- Very important fixes + firebase crash analytics to catch a rare problem (occasionally needs internet perm.)
**Sharing notes: fixed crash on Android 7+ thanks to firebase crash analytics
- Importing notes works best from G Drive or Gmail (don't save attachment)
Due to low standardization, others give different results per device, android version etc. Your mileage _will_ vary
- App imports note as plaintext if JSON format fails
- Types pdf, jpg, gif..silently discarded
*4.02*
- Very important fixes + firebase crash analytics to catch a rare problem (occasionally needs internet perm.)
Requires Android: Android 4.0+
Screen DPI: 120-640dpi
SHA1: 444248e6d76aeb9b704bf8986ad9c470a1cf5de5
Size: 1.62 MB
What's New:
- Important stability fixes: native auto fit text + firebase crash analytics may need internet permission for some cases. No private data is collected. Anonymusly logged: callsign reminder, import note activity
- Show maidenhead grid on google maps
- Remember last calculated grid
- Try to import plain text notes
- Navigation drawer layout
- Support for Oreo
**Best if device uses automatic time and zone**
v3.5:
- Temporarily toggle callsign reminder by ringer icon
- Show maidenhead grid on google maps
- Remember last calculated grid
- Try to import plain text notes
- Navigation drawer layout
- Support for Oreo
**Best if device uses automatic time and zone**
v3.5:
- Temporarily toggle callsign reminder by ringer icon
More Information
Package Name:
Update Date:
2025-07-04
Latest Version:
05.11
Need Update:
Available on:
Requirements:
Android 8.0+
Report:
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