The Sperry Marine Transceiver Power Supply is an essential component for ensuring the efficient operation of your radar systems. Designed specifically for the Sperry model T65825816-4, this X-Band AC power supply delivers consistent performance and reliability.
It is the AC power supply / PSU board for the Sperry X-Band radar transceiver / scanner.
It provides the necessary voltages (low and high voltage rails) internally to the radar’s subsystems (trigger board, modulator, receiver, etc.).
Even when the radar is powered “off,” some voltages from the supply may remain present to support standby circuitry.
Purpose – It is an AC power supply / power-supply PCB (PSU PCB) used for the the radar / scanner / transceiver / antenna scanner module in Sperry Marine X-Band radar systems.

Input- It accepts AC input from the main radar system power bus.

Output- It provides regulated internal voltages for various subsystems: transmitter, receiver, motor / antenna turning / scanner electronics.

Technical Specification

Key technical specifications (summary)

Part / type

Part number: T65825816-4 (family T65825816). Revision variants exist (-4, -5, Rev D/G etc.).

Input

AC input (nominal): ~120 VAC mains (listed for the T65825816 family in parts catalogues). Confirm on your radar’s power feed — some systems accept system power bus rather than direct mains. Primary outputs (from VisionMaster / Transceiver service manual)

Adjustable high voltage (magnetron/modulator): −600 V nominal, adjustable in the range −550 V to −650 V (used to control magnetron current).
Other regulated outputs (typical):
- +30 V
- +20 V
- Magnetron heater rails supplied via further regulation: +12 V, −12 V and +5 V
- +50 V (used for Motor Drive PCB on X-band turning-unit variants).
  These output rails and their presence are described in the transceiver power-supply section of the service manual.

Output short-circuit protection / fault detection (documented feature in manual).
Some PSU designs in this family include additional switch-mode converters to create regulated outputs (i.e., not all outputs are from a single linear transformer).

Physical / mechanical

Board weight: listings vary by revision — examples: ≈1.285 kg to ≈2.16 kg depending on revision and listed source. Check the seller listing for exact revision weight.
Form factor / mounting: module/PCB assembly intended to slide into radar scanner / transceiver chassis (connector pinouts vary by radar model & revision).

High voltage present even when “off”: service notes and parts listings warn that the high voltage rail(s) (magnetron/modulator) may remain at dangerous potentials after power removal — do not service without isolation and discharge procedures.