Item: Original Hewlett-Packard HP 8640B (Option 323) High-Performance AM/FM RF Signal Generator / Military AN/USM-323 housed in its original heavy-duty yellow transit case with front latched lid.

Nomenclature & Identification:

Faceplate Identification: hp 8640B - OPT. 323 SIGNAL GENERATOR / HEWLETT-PACKARD

Military Data Plate: Stamped AN/USM 323 / 6625-115-6768

Depot / Inventory Markings: Labeled MCLB ALBANY with matching military stenciling on the casing exterior: AN/USM-323.

Features & Configuration:

Frequency coverage up to 512 MHz (and 1024 MHz with external doubler bands).

Red digital LED frequency counter display with fine/coarse tuning mechanisms.

Analog modulation/RF level meter.

Ruggedized military environmental case in safety yellow with rubber feet, sturdy carry handles, pressure relief valve, and heavy dual latching closures.

Front cover retains original internal accessory bracket with power interconnect cable assembly.

Condition & Testing:

Testing: Powers on when connected to AC line power; the digital LED display illuminates cleanly with bright zero readout across all digits as pictured. Knobs and switches turn smoothly. No further calibration, RF output measuring, or bench testing has been performed.

Exterior: Strong, rugged military field condition. Yellow transit housing shows expected surface scuffing, paint wear, and sticker/label residue from military service and surplus handling. Metal latches lock down firmly.

Faceplate: Very clean control panel with clear white graphics, intact meter glass, undamaged LED bezel, and bright dial markings.

Hewlett Packard 8640B AM/FM RF Signal Generator AN 323

Specifications

Returns Accepted