4431 - Quadrifilar Helix (QFH) antenna (Orlando, FL)

Timeframes are in UTC
Owner jose5c
QTH Locator EL98io
Coordinates(lat, lon) 28.604°, -81.270°
Altitude 19 m
Min Horizon 10°
Antennas Quadrafilar (VHF)
Success Rate
26% Complete (success)
74% Complete (danger)
Observations 90
Creation Date 1 month, 3 weeks ago
Client version 1.9.3
Offline Last seen 1 month ago
Uptime -
Quadrifilar Helix (QFH) antenna (Orlando, FL)

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.
Future Passes
Name ⤉ ⇴ ⤈ Polar plot
Calculating Future Passes
passes found. Open all for scheduling.
Status Datetime Time since Change
Offline 2025-11-09 16:24:44 1 month ago
Testing 2025-11-09 15:41:51 1 month ago
Offline 2025-11-09 15:24:44 1 month ago
Testing 2025-11-09 14:05:28 1 month ago
Offline 2025-11-09 12:24:44 1 month ago
Testing 2025-11-09 11:49:13 1 month ago
Offline 2025-11-09 03:24:44 1 month ago
Testing 2025-11-08 15:15:39 1 month ago
Offline 2025-11-08 02:24:44 1 month ago
Testing 2025-11-07 14:38:03 1 month ago
Offline 2025-11-06 18:24:44 1 month ago
Testing 2025-11-06 17:46:45 1 month ago
Offline 2025-11-06 17:24:44 1 month ago
Testing 2025-11-06 16:10:01 1 month ago
Offline 2025-11-06 15:24:44 1 month ago
Testing 2025-11-06 14:33:15 1 month ago
Offline 2025-11-06 01:24:44 1 month ago
Testing 2025-11-05 15:15:54 1 month ago
Offline 2025-11-05 02:24:44 1 month ago
Testing 2025-11-04 14:38:10 1 month ago
Offline 2025-11-04 03:24:44 1 month ago
Testing 2025-11-03 14:54:12 1 month ago
Offline 2025-11-03 12:24:44 1 month ago
Testing 2025-11-03 11:44:05 1 month ago
Offline 2025-11-03 02:17:45 1 month, 1 week ago
Testing 2025-11-02 14:28:17 1 month, 1 week ago
Offline 2025-11-02 12:17:45 1 month, 1 week ago
Testing 2025-11-02 11:41:50 1 month, 1 week ago
Offline 2025-11-02 04:17:45 1 month, 1 week ago
Testing 2025-11-01 17:22:41 1 month, 1 week ago
Offline 2025-11-01 17:17:45 1 month, 1 week ago
Testing 2025-11-01 13:29:19 1 month, 1 week ago
Offline 2025-11-01 13:17:45 1 month, 1 week ago
Testing 2025-11-01 12:57:39 1 month, 1 week ago
Offline 2025-11-01 11:17:45 1 month, 1 week ago
Testing 2025-10-31 14:26:06 1 month, 1 week ago
Offline 2025-10-31 11:17:45 1 month, 1 week ago
Testing 2025-10-30 14:24:45 1 month, 1 week ago
Offline 2025-10-30 11:17:45 1 month, 1 week ago
Testing 2025-10-29 14:18:59 1 month, 1 week ago
Offline 2025-10-29 05:17:45 1 month, 1 week ago
Testing 2025-10-28 15:27:16 1 month, 1 week ago
Offline 2025-10-28 15:17:45 1 month, 1 week ago
Testing 2025-10-28 14:57:48 1 month, 1 week ago
Offline 2025-10-28 00:17:45 1 month, 1 week ago
Testing 2025-10-27 23:17:50 1 month, 1 week ago
Offline 2025-10-27 23:17:45 1 month, 1 week ago
Testing 2025-10-27 19:21:37 1 month, 1 week ago
Offline 2025-10-27 19:17:45 1 month, 1 week ago
Testing 2025-10-27 18:42:11 1 month, 1 week ago
Offline 2025-10-27 18:17:44 1 month, 1 week ago
Testing 2025-10-27 17:32:54 1 month, 1 week ago
Offline 2025-10-23 08:17:45 1 month, 2 weeks ago
Testing 2025-10-20 23:33:14 1 month, 2 weeks ago
Offline 2025-10-20 18:17:45 1 month, 2 weeks ago
Testing 2025-10-19 17:07:07 1 month, 2 weeks ago
Online 2025-10-19 05:37:32 1 month, 2 weeks ago
Offline 2025-10-19 05:17:44 1 month, 2 weeks ago
Online 2025-10-18 18:19:15 1 month, 3 weeks ago
Offline 2025-10-18 17:45:16 1 month, 3 weeks ago