Bingfu 42.5-inch Foldable Tactical (SMA-Female) vs Comet SMA-24J (SMA-Female)

The Comet SMA-24J is the better choice for most users, despite its higher price and lower overall score.

The single most important differentiator is band-specific performance. The Bingfu excels on VHF with a half-wave electrical length at 146 MHz, delivering realistic 2.6 dBi gain without needing a ground plane, making it excellent for handheld VHF work. However, at UHF it performs poorly at 1.57 wavelengths, with actual gain around -1.0 dBi. The Comet reverses this: its quarter-wave VHF performance is compromised at -0.4 dBi, but it hits a superior 5/8-wave electrical length on UHF where it achieves realistic 2.9 dBi gain.

The Bingfu's claimed 3.5 dBi gain is accurate for its design but misleading because it only delivers that performance on one band. The Comet's claimed gain is also supported by its actual electrical length.

Buy the Bingfu if you primarily operate VHF and want the best handheld antenna at the lowest price. Buy the Comet if you regularly use both bands or focus on UHF, where its 5/8-wave performance is genuinely superior.

For balanced dual-band operation, the Comet SMA-24J deserves your consideration.