Skip to content
View in the app

A better way to browse. Learn more.
Ham Radio Base

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.
☀ Solar
SFI 121
SN 99
A 11
K 3 Unsettled
X-Ray C2.4
Wind 432.2 km/s
Aurora 4
Updated 08:30 UTC HamQSL · N0NBH
Day 80/40m Poor 30/20m Good 17/15m Fair 12/10m Fair
Night 80/40m Fair 30/20m Good 17/15m Fair 12/10m Poor

Callsign Lookup
_
Vanity Call Signs Available
Enter filters above and click Search.
ⓘ Callsign lookups are in real time via the FCC database. Vanity callsign availability is refreshed daily at 6:00 AM CST. The vanity search may be unavailable for a few minutes during this update.
Live DX spots
Live DX Spots — 70cm via PSKReporter · scroll or pinch to zoom
Band
Mode
Time
Loading map data…
MHz DX Spotter Info
Recent spots —
Select a band above to load spots
Ready — select a band to fetch live spots

Satellite Operation

Discuss amateur radio satellites, portable satellite contacts, antenna tracking, passes, and successful satellite QSOs.

  1. finally tried working AO-73 linear transponder — a few questions

    Ham Mountain,
    • 1 reply
    • 152 views
    Jeff Parker

  2. Tracking Software Comparison: Gpredict vs SatPC32 vs Orbitron for LEO Operations

    Tom Bradley,
    • 2 replies
    • 1.1k views
    Tom Bradley

  3. first time trying AO-73 with a yagi and nothing is making sense

    Diana Patel,
    • 1 reply
    • 169 views
    Diana Patel

  4. first time trying linear transponder sats, SO-50 vs AO-73 confusion

    Steven Clark,
    • 1 reply
    • 157 views
    Emily Rodriguez

  5. SatPC32 vs Gpredict for linear transponder Doppler control - seeking recommendations

    David Park,
    • 2 replies
    • 342 views
    CW Lover

  6. New to LEO linear transponders - need tracking software recommendations

    David Miller,
    • 2 replies
    • 250 views
    David Miller

  7. first time trying linear transponder sats and completely lost on doppler

    Michael Stevens,
    • 1 reply
    • 170 views
    Paul Jackson

  8. first time trying LEO sats, SO-50 pass went okay but linear transponder stuff confuses me

    Ashley Brown21,
    • 1 reply
    • 126 views
    Bob Wilson

  9. linear transponder on FO-29 — am i doing this completely wrong

    John Peterson,
    • 1 reply
    • 129 views
    John Peterson

  11. AO-73 transponder frequency drift - temperature correlation?

    DX Lover,
    • 2 replies
    • 992 views
    Amanda Wilson

  12. first time trying linear transponder sats, completely lost on doppler

    Ashley Wilson95,
    • 1 reply
    • 134 views
    David Kowalski

  13. first time trying LEO sats with linear transponder — what am i doing wrong

    Frank Williams,
    • 1 reply
    • 121 views
    Steve Wilson

  14. first time trying LEO linear transponders — what am i doing wrong

    Lisa Wang,
    • 1 reply
    • 125 views
    Jessica Wilson

  15. FT-847 Linear Transponder Doppler Control — Need Advice

    Robert Williams,
    • 2 replies
    • 272 views
    Ashley Brown21

  16. finally tried working SO-50 with a handheld, some questions

    Mike Thompson,
    • 1 reply
    • 199 views
    Kiwi Operator

  17. finally tried linear transponder sats and wow i've been missing out

    Contester,
    • 1 reply
    • 154 views
    Dave Williams

  18. first time trying LEO sats with linear transponder — confused about the doppler thing

    Repeater King,
    • 1 reply
    • 144 views
    Robert Mitchell

  19. finally tried working AO-73 with the handheld but the doppler thing is killing me

    Maria Rodriguez,
    • 1 reply
    • 181 views
    Maria Rodriguez

  20. first time trying LEO birds — what am I doing wrong with the doppler

    Mike Rodriguez,
    • 1 reply
    • 110 views
    Carol White

  21. finally tried working AO-73 with a linear transponder — few questions about doppler

    Michael Torres,
    • 1 reply
    • 110 views
    Sarah Garcia

  22. linear transponder sats — am i doing this completely wrong

    Frank Nakamura,
    • 1 reply
    • 191 views
    Anna Petrov

  23. first time trying LEO satellites and i have no idea what im doing wrong

    Rick Anderson,
    • 1 reply
    • 177 views
    Jennifer Smith

  24. first time trying LEO birds with a linear transponder — few questions

    Emily Taylor,
    • 1 reply
    • 95 views
    Radio Geek

  25. finally got AO-73 working but tracking is still driving me nuts

    Sarah Thomas43,
    • 1 reply
    • 159 views
    Sarah Thomas43

  26. first time working AO-73 with linear transponder, some questions

    Steven Clark,
    • 1 reply
    • 180 views
    Sarah Kim

Account

Navigation

Search

Search

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.