| 004 | Precision Frequency Reference |
| 009 | Local Oscillator and Sweep + Tune Outputs (rear panel) |
| 010 | Built-in Tracking Generator, 50 Ohm (100 kHz-1.8 GHz) |
| 015 | Protective Soft Tan Carrying/Operating Case |
| 016 | Protective Soft Yellow Operating/Carrying Case |
| 024 | Parallel interface replaces HP-IB I/F |
| 040 | Front Panel Protective Cover w/CRT Viewing Hood |
| 041 | |
| 042 | Protective Soft Carrying Case/Backpack |
| 078 | HP 85878A Report Generation Software |
| 101 | Fast Time-Domain Sweeps and Analog + Display |
| 102 | AM/FM Demodulator with Speaker and TV Sync Trigger |
| 105 | |
| 11947A | Transient Limiter |
| 11956A | Log periodic antennae |
| 11966C | Biconical antenna(30-300MHz) |
| 11966D | Log periodic antennae(.2-1 GHZ |
| 11966E | Ridged horn (1 to 18 GHz) |
| 11966L | 10 meter N cable |
| 11966N | Log periodic antenna |
| 11966P | Broadband antenna(30MHz-1GHz) |
| 301 | TV sync. trigger capability, fast time domain sweeps, AM/FM demodulator, and Analog + display (Optio |
| 703 | Delete Quasi-Peak Detector and AM/FM Demodulator |
| 908 | Rack Flange Kit for Use without Handles |
| 909 | Front Handle & Rack Flange Kit |
| 910 | Additional operating and service manual |
| 915 | Component Level Information and Service Guide |
| UK6 | Commercial calibration with test results data |