Zosilňovače Grom2k (часто písaný ako GROM2K) sú výkonné KV (krátkovlnné) zosilňovače intended for radio amateur operation. They are designed for those who demand výkon, spoľahlivosť a robustnosť pri práci v náročných podmienkach.
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Purpose and characteristics
Grom2k sú zosilňovače výkonu pre KV pásma (1.8 to 30 MHz), suitable for amateur radio modes from CW a SSB až po digitálne prevádzky. Ich hlavné prednosti spočívajú v:
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vysokom výkone (typicky až do 1 kW) — sufficient for most amateur activities, including DX connections on low bands;
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moderných výkonových tranzistoroch LDMOS — guaranteeing relatively high efficiency and better thermal stability;
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robustnej mechanickej a elektrickej konštrukcii — ideal for daily and demanding use;
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zabezpečenej prevádzke — with protection against overload, overheating and poor antenna alignment.
The manufacturer's official website emphasizes that the Grom2k is designed for "demanding radio amateurs" who want to combine výkon s dlhodobou spoľahlivosťou.
Technical characteristics (standard parameters)
Detailed specifications may vary by specific model configuration, but typical parameters of this type of KV amplifier include:
| Parameter | GROM2K-600 | GROM2K-600 Plus | GROM2K-1200 | GROM2K-1200 Plus |
|---|---|---|---|---|
| Input power (max.) | 5–100 W | 5–100 W | 5–100 W | 5–100 W |
| Power Output (PEP) | 600 W | 600 W | 1200 W | 1200 W |
| Input impedance | 50 Ω | 50 Ω | 50 Ω | 50 Ω |
| Type of control system | Basic | Advanced | Basic | Advanced |
| Display size | 7″ color | 7″ color | 7″ color | 7″ color |
| Protection against high SWR | Yes | Yes | Yes | Yes |
| Automatic switching LPF pásiem | Yes | Yes | Yes | Yes |
| Remote control via USB | Nope | Yes | Nope | Yes |
| CAT interface | Nope | Yes | Nope | Yes |
| Remote control via Wi-Fi / LAN | Nope | Yes | Nope | Yes |
| Dimensions (W x H x D) | 295 × 165 × 280 mm | 295 × 165 × 280 mm | 295 × 165 × 280 mm | 295 × 165 × 280 mm |
| Weight | 7.8 kg | 7.8 kg | 8 kg | 8 kg |
| Supply voltage | 110–220 V / 50–60 Hz | 110–220 V / 50–60 Hz | 110–220 V / 50–60 Hz | 110–220 V / 50–60 Hz |
| Price | 1800 USD | 1900 USD | 2100 USD | 2200 USD |
Advantages and disadvantages
Advantages
✅ High power – up to ~1 kW, suitable for demanding connections
✅ Moderné LDMOS tranzistory – good efficiency and linearity
✅ Stabilná prevádzka – protections and robust construction
✅ Flexibilita použitia – from CW to SSB to digital modes
Disadvantages
❌ An amplifier with such performance requires spoľahlivé napájanie (napr. 50 V zdroj)
❌ Väčšia hmotnosť a rozmer than with smaller amplifiers
❌ Chladenie a prúdová spotreba – needs adequate ventilation and power source
📌 Note
More detailed information on the manufacturer's website https://g2k.su/