An old radome does not need replacement only because it looks dirty. Replacement becomes important when the cover can no longer protect the antenna or radar, when it creates water ingress risk, when the structure is weakened, or when RF performance may be affected.
Six signs to check
| Inspection signal | Why it matters |
|---|---|
| Cracks | Cracks can spread, allow moisture ingress and weaken panels or shell sections. |
| Water leakage | Leaks can damage equipment, fasteners, base interface and internal structure. |
| Corrosion | Corroded fasteners, base rings or metal frames can reduce structural reliability. |
| Deformation | Shape changes may affect clearance, sealing, load path and RF behavior. |
| Aging surface | UV, weathering, chalking or delamination can indicate material degradation. |
| RF concern | Changed signal behavior may indicate wet surface, damage, material aging or geometry issues. |
Monitor, repair locally or replace?
Not every issue requires immediate replacement. Some sites can be monitored. Some localized damage may be repaired. But repeated leaks, structural deformation, large cracks, corroded interfaces or performance concerns should trigger a replacement review.
Why copying the old radome is not always enough
Replacement does not always mean making the exact same cover again. If the old radome failed because of weak sealing, poor fasteners, insufficient structure, wrong material or difficult maintenance access, copying it can copy the problem.
Data to prepare
- Photos from outside and inside if available.
- Old radome diameter, height and truncation height.
- Base ring, foundation or mounting interface details.
- Operating frequency band.
- Antenna/radar size and movement envelope.
- Site country, altitude and environmental load.
- Cracks, leaks, corrosion, deformation or repair history.
- Installation access and downtime limits.
Replacement and RF review
A replacement radome should not be evaluated only by geometry. It must also match the operating frequency and acceptable RF performance. If the old radome had water ingress or surface damage, wet material or deformation may have affected signal behavior.
Common mistakes
- Waiting until water enters the equipment room.
- Copying the old shell without understanding why it failed.
- Taking only one photo and no measurements.
- Ignoring base interface and fastener corrosion.
- Planning installation after production instead of before quotation.
- Forgetting frequency band and insertion loss requirements.
FAQ
Can an old radome be repaired instead of replaced?
Sometimes. Localized surface or sealing damage may be repairable, but structural damage, repeated leakage or RF concerns may justify replacement.
Do I need drawings for replacement?
Drawings help, but photos, dimensions and site data can start the review if drawings are unavailable.
Can Radomecn replace only the cover and keep the antenna?
Yes. That is a common replacement scenario when the protected equipment still works.
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