RH6211 is the antenna tuning unit designed to match 25W transmitter output with 1.5-2.7 m whip antenna in HF range (1600 …30000 kHz). RH6211 provides the antenna input impedance transformation to 50 Ω active resistance with VSWR less than 1.4 . RH6211 is designed as a single board to be integrated into the radio.
Technical specifications
| Frequency band | 1600…30000 kHz |
| Input Power (peak) | ≤ 25 W |
| Input power (average) | ≤ 25 W |
| Input impedance | 50 Ω ; VSWR ≤1.4 |
| Tuning time (by algorithm) | ≤ 3 s |
| Tuning time (from memory) | ≤ 0.3 s |
| Tuning power | 3-6 W |
| Power supply voltage | +12V DC ; 0.3А |
| Dimensions (without tray) | 190 х 120 х 40 mm |
| Weight | 0.4 kg |
| Operation temperature range | — 30 + 60 ° C |
| Storage temperature | — 40 +85 ° C |
| Humidity | 95% ; 20 ÷85 ° C |
