The low-frequency aperture provides omnidirectional coverage at the lower very high frequency bands with high gain performance by using an efficient matching network. The upper frequency aperture is comprised of stacked dipole elements located near the top of the assembly avoiding potential blockage by the vehicle. The Q172 uses a proven assembly based on the Q71 JTIDS antenna, which has undergone full environmental testing including the stringent “oak beam” impact tests. The design also incorporates a unique spring damper assembly that prevents the antenna from oscillating after an impact.
Q172 Antenna Specifications
| Port 1 | Port 2 | |
|---|---|---|
| Frequency range | 20-100 MHz | 100-550 MHz |
| VSWR | 3.5:1 | 2.5:1 |
| Gain | -18 dBi to -3 typical | -3 dBi typical |
| Pattern | ||
| Azimuth | Omnidirectional | Omnidirectional |
| Elevation | Figure eight | Figure eight |
| Power handling | 50 watts CW | 200 watts CW |
| Port 1 | Port 2 | |
|---|---|---|
| Connector | BNC Female | N Female |
| Weight | 16 lbs | |
| Finish | CARC color green or desert sand |
| Port 1 | Port 2 | |
|---|---|---|
| Operating Temperature | -40° C to +55° C |
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