Replacement parts
Genuine 4O3A replacement parts
As the Manufacturer Authorized North American Service Center, we can source replacement parts for 4O3A Signature products. Inventory and lead times vary by item, so parts are quoted individually - call 737-234-7800 for availability and pricing.
Because RF parts pricing and stock change constantly, we don't list live prices. Tell us your model and the part you need and we'll check stock and quote it on the spot.
Parts by category
Common replacement items for the 4O3A line. Don't see what you need? Ask - if it's a 4O3A part, we can usually get it.
RF Power Devices
LDMOS transistors and RF power modules for Power Genius XL, XXL, and M amplifiers, matched and tested where applicable.
RF Switching and Relays
Switching PIN diodes and relays for amplifiers, antenna switches, tuners, and filters - the most common wear item in switched RF gear.
Cooling & Thermal
Replacement fans, thermal sensors, and airflow hardware that keep high-power units within their rated duty cycle.
Power Supply Components
PSU modules, bulk capacitors, rectifiers, and regulation parts for amplifier and accessory power sections.
Control & Logic Boards
Controller and interface boards for Genius-family devices, plus the discrete logic and driver components on them.
Front Panel & Display
Displays, rotary encoders, switches, and button assemblies for amplifiers and station controllers.
RF Connectors & Hardware
N-type and PL-259 connectors (straight and right-angle), panel-mount parts, and assembly hardware.
Firmware & Modules
Firmware updates and pluggable modules (network, control, sensor) for Genius-family products.
Enclosure & Mechanical
Knobs, feet, rack-mount hardware, gaskets, and weather-sealing parts for indoor and outdoor units.
Once we confirm availability, parts are quoted on the same transparent formula we use for repairs: ((parts + shipping) × 1.25) + tariffs.
The same honest pricing as our repairs
We can't post live prices because RF part costs and stock move constantly - but the formula never changes. Call or email with your model and the part you need, and you'll get a clear, itemized quote before anything is ordered.
Some parts are paid up front. Open-book pricing means you pay what a part actually cost us plus a fixed 25% - there is no padding in that number to absorb a component that turns out to be special-order, non-returnable, or simply expensive. So once you've approved an estimate, we may ask for those particular parts before we place the order. It's the other half of the same bargain: you see our real costs instead of a marked-up guess, and we don't have to inflate every price to carry the risk of the few. It's always itemized, always after your approval, and the balance is billed on completion as usual.