The Keysight PNA-L series of network analyzers is the recommended replacement products. The PNA-L Series covers the frequency range of 300 kHz to 50 GHz, and is available in 2 and 4 port models.
Frequency: 0.1 to 1500 MHz
Max Dynamic Range: 123 dBm
Output Power: 10 dBm
Inputs: 2
Frequency: 0.3 to 3000 MHz
Max Dynamic Range: 128 dBm
Output Power: 10 dBm
Inputs: 2
