Side-by-side
FR-400/28 Series Combined GPU (400 Hz + 28.5 V DC) vs UGP100 Half-duplex Intercom
Spec comparison for two products on Aviation Souk. Both compete in Ground Support Equipment (GSE).

Ground Support Equipment (GSE)
FR-400/28 Series Combined GPU (400 Hz + 28.5 V DC)
by CDR Technology OÜ
Combined 400 Hz AC and 28.5 V DC ground power unit delivering both aircraft supply standards simultaneously from a single trolley.

Ground Support Equipment (GSE)
UGP100 Half-duplex Intercom
by Inbertec
Side-PTT wireless walkie-talkie for tug and truck drivers on the Inbertec ramp network
| Cost of ownership | FR-400/28 Series Combined GPU (400 Hz + 28.5 V DC) | UGP100 Half-duplex Intercom |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 0 | 0 |
Specs
Technical specifications.
| Spec | FR-400/28 Series Combined GPU (400 Hz + 28.5 V DC) | UGP100 Half-duplex Intercom |
|---|---|---|
| AC output frequency | 400 Hz | — |
| AC rated capacity | Up to 360 kVA | — |
| AC output voltage | 115/200 V (3-phase) | — |
| Optional 400 Hz output | 36 V, up to 30 kVA | — |
| DC output voltage | 28.5 (modes: 28 / 48 / 56) V | — |
| DC continuous current | Up to 1,600 A | — |
| DC overload current | Up to 2,500 A | — |
| Simultaneous AC + DC operation | Yes — fully independent channels | — |
| Additional outputs | 50/60 Hz standard sockets | — |
| Model | — | UGP100 |
| Type | — | Half-duplex wireless intercom / walkie-talkie |
| Transmit control | — | Push to talk (side PTT) |
| Working distance | — | 1600 ft (~488 m) |
| Form factor | — | Compact portable with clip |
| Display | — | Channel and battery level screen |
| Emergency alarm | — | Yes |
| Compatibility | — | Inbertec wireless intercom products (UW / UGA series) |
| Typical user | — | Tug operator / truck driver |
| Provenance | — | Inbertec GSE wireless catalogue (RFQ f9cfd705) |
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