Longitudinal RF signal processor currently exists in two versions: FBE-178L and FBE-500L. Differing specifications are indicated in the table below, when appropriate.
| Parameter | FBE-178L | FBE-500L |
|---|---|---|
| Reference frequency (MHz) | 178.55 | 500 |
| RF input level (dBm) | 0 | |
| Reference output loss (dB) | 3.5 | |
| Parameter | FBE-178L | FBE-500L |
|---|---|---|
| Detection frequency (MHz) | 1428.4 | 1500 |
| Maximum operating input level (V peak) | 9.3 | |
| Absolute maximum input level (V peak) | 14 | |
| Attenuation range (dB) | 0–31.5 | |
| Nominal output | 190 mV peak-to-peak (-10.4 dBm) | |
| Output filter | 5th order Bessel low-pass | |
| 3 dB bandwidth (MHz) | 140 | 500 |
| Baseband pulse width (ns) | 3.8 | 1.9 |
| Phase shifter range (deg) | >360 | |
| Phase shifter resolution (deg/step) | 0.25 | |
| Parameter | FBE-178L | FBE-500L |
|---|---|---|
| Carrier frequency (MHz) | 892.75 | 1000 |
| Input level (mV) | ±250 | |
| Attenuation range (dB) | 0–31.5 | |
| Maximum output level (Vin=250 mV, 0 dBm ref.) (dBm) | 4.5 | 10 |
| Output filter | 3rd order Bessel low-pass | 5th order Bessel band-pass |
| 3 dB bandwidth (MHz) | 1130 | 660 |
| Phase shifter range (deg) | >360 | |
| Phase shifter resolution | 0.01–0.21 | |