4431 - Quadrifilar Helix (QFH) antenna (Orlando, FL)
Timeframes are in UTC
| Owner | jose5c |
| QTH Locator | EL98io |
| Coordinates(lat, lon) | 28.602°, -81.200° |
| Altitude | 30 m |
| Min Horizon | 10° |
| Antennas | Quadrafilar (VHF) |
| Success Rate |
|
| Observations | 243 |
| Creation Date | 10 months ago |
| Client version | 1.9.3+5.g4eedaa1 |
| Testing | Last seen 0 minutes ago |
| Uptime | 3 days, 21 hours |
Home-built Quadrifilar Helix (QFH) antenna optimized for VHF satellite downlinks, including NOAA APT, Meteor-M2 LRPT, and ISS transmissions (145.800 MHz FM voice/SSTV, 145.825 MHz APRS). The system uses a Nooelec SDR with a Flamingo FM band-stop filter to reduce local FM interference and improve signal quality. Mounted for wide sky coverage with right-hand circular polarization.
| Status | Datetime | Time since Change |
|---|---|---|
| Testing | 2026-08-20 18:37:29 | 3 days, 21 hours ago |
| Offline | 2026-08-20 17:45:08 | 3 days, 22 hours ago |
| Testing | 2026-08-16 02:23:37 | 1 week, 1 day ago |
| Offline | 2026-08-16 00:45:09 | 1 week, 1 day ago |
| Testing | 2026-08-15 21:49:52 | 1 week, 1 day ago |
| Offline | 2026-08-15 21:45:08 | 1 week, 1 day ago |
| Testing | 2026-06-27 11:22:53 | 1 month, 4 weeks ago |
| Offline | 2026-06-06 16:45:07 | 2 months, 2 weeks ago |
| Testing | 2026-05-09 14:28:04 | 3 months, 2 weeks ago |
| Offline | 2026-03-22 21:29:44 | 5 months ago |
| Testing | 2026-03-15 14:43:46 | 5 months, 1 week ago |
| Offline | 2026-03-15 14:43:18 | 5 months, 1 week ago |
| Testing | 2026-03-14 17:56:36 | 5 months, 1 week ago |
| Offline | 2026-03-14 17:33:20 | 5 months, 1 week ago |
| Testing | 2026-03-11 14:41:14 | 5 months, 1 week ago |
| Offline | 2026-03-11 14:33:20 | 5 months, 1 week ago |
| Testing | 2026-03-10 20:47:18 | 5 months, 1 week ago |
| Offline | 2026-03-02 04:33:20 | 5 months, 3 weeks ago |
| Testing | 2026-03-02 01:21:31 | 5 months, 3 weeks ago |
| Offline | 2026-03-01 22:33:20 | 5 months, 3 weeks ago |
| Testing | 2026-03-01 20:38:50 | 5 months, 3 weeks ago |
| Offline | 2026-03-01 15:33:20 | 5 months, 3 weeks ago |
| Testing | 2026-03-01 13:27:37 | 5 months, 3 weeks ago |
| Offline | 2026-03-01 05:33:20 | 5 months, 3 weeks ago |
| Testing | 2026-03-01 04:49:40 | 5 months, 3 weeks ago |
| Offline | 2026-02-28 22:33:20 | 5 months, 3 weeks ago |
| Testing | 2026-02-27 18:35:47 | 5 months, 3 weeks ago |
| Offline | 2026-02-27 18:33:20 | 5 months, 3 weeks ago |
| Testing | 2026-02-23 19:41:20 | 6 months ago |
| Offline | 2026-02-23 16:33:20 | 6 months ago |
| Testing | 2026-02-23 15:01:26 | 6 months ago |
| Offline | 2026-02-23 06:33:20 | 6 months ago |
| Testing | 2026-02-23 05:34:38 | 6 months ago |
| Offline | 2026-02-23 05:33:20 | 6 months ago |
| Testing | 2026-02-21 02:33:41 | 6 months ago |
| Offline | 2026-02-21 02:33:20 | 6 months ago |
| Testing | 2026-02-20 21:48:07 | 6 months ago |
| Offline | 2026-02-20 21:33:20 | 6 months ago |
| Testing | 2026-02-20 19:23:45 | 6 months ago |
| Offline | 2025-11-09 16:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-09 15:41:51 | 9 months, 2 weeks ago |
| Offline | 2025-11-09 15:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-09 14:05:28 | 9 months, 2 weeks ago |
| Offline | 2025-11-09 12:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-09 11:49:13 | 9 months, 2 weeks ago |
| Offline | 2025-11-09 03:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-08 15:15:39 | 9 months, 2 weeks ago |
| Offline | 2025-11-08 02:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-07 14:38:03 | 9 months, 2 weeks ago |
| Offline | 2025-11-06 18:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-06 17:46:45 | 9 months, 2 weeks ago |
| Offline | 2025-11-06 17:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-06 16:10:01 | 9 months, 2 weeks ago |
| Offline | 2025-11-06 15:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-06 14:33:15 | 9 months, 2 weeks ago |
| Offline | 2025-11-06 01:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-05 15:15:54 | 9 months, 2 weeks ago |
| Offline | 2025-11-05 02:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-04 14:38:10 | 9 months, 2 weeks ago |
| Offline | 2025-11-04 03:24:44 | 9 months, 2 weeks ago |
| Testing | 2025-11-03 14:54:12 | 9 months, 3 weeks ago |
| Offline | 2025-11-03 12:24:44 | 9 months, 3 weeks ago |
| Testing | 2025-11-03 11:44:05 | 9 months, 3 weeks ago |
| Offline | 2025-11-03 02:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-11-02 14:28:17 | 9 months, 3 weeks ago |
| Offline | 2025-11-02 12:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-11-02 11:41:50 | 9 months, 3 weeks ago |
| Offline | 2025-11-02 04:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-11-01 17:22:41 | 9 months, 3 weeks ago |
| Offline | 2025-11-01 17:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-11-01 13:29:19 | 9 months, 3 weeks ago |
| Offline | 2025-11-01 13:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-11-01 12:57:39 | 9 months, 3 weeks ago |
| Offline | 2025-11-01 11:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-10-31 14:26:06 | 9 months, 3 weeks ago |
| Offline | 2025-10-31 11:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-10-30 14:24:45 | 9 months, 3 weeks ago |
| Offline | 2025-10-30 11:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-10-29 14:18:59 | 9 months, 3 weeks ago |
| Offline | 2025-10-29 05:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-10-28 15:27:16 | 9 months, 3 weeks ago |
| Offline | 2025-10-28 15:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-10-28 14:57:48 | 9 months, 3 weeks ago |
| Offline | 2025-10-28 00:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-10-27 23:17:50 | 9 months, 3 weeks ago |
| Offline | 2025-10-27 23:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-10-27 19:21:37 | 9 months, 3 weeks ago |
| Offline | 2025-10-27 19:17:45 | 9 months, 3 weeks ago |
| Testing | 2025-10-27 18:42:11 | 9 months, 3 weeks ago |
| Offline | 2025-10-27 18:17:44 | 9 months, 3 weeks ago |
| Testing | 2025-10-27 17:32:54 | 9 months, 3 weeks ago |
| Offline | 2025-10-23 08:17:45 | 10 months ago |
| Testing | 2025-10-20 23:33:14 | 10 months ago |
| Offline | 2025-10-20 18:17:45 | 10 months ago |
| Testing | 2025-10-19 17:07:07 | 10 months ago |
| Online | 2025-10-19 05:37:32 | 10 months ago |
| Offline | 2025-10-19 05:17:44 | 10 months ago |
| Online | 2025-10-18 18:19:15 | 10 months ago |
| Offline | 2025-10-18 17:45:16 | 10 months ago |