Description
Utilising a single GU78B tetrode.
Specification of OM3501A:
| Frequency coverage: | Amateur bands (1.8 – 29.7) MHz including WARC |
| Power output: | 3500 W in SSB and CW on HF bands, 3000 W in RTTY/FM |
| Input Power: | 30 to 80 W for full output power |
| Input Impedance: | 50 ohm, VSWR < 1.5 : 1 |
| Power Gain: | 17 dB |
| Output Impedance: | 50 ohm unbalanced |
| Maximum Output SWR: | 3:1 |
| SWR protection: | Automatic switching to STBY when reflected power is 350 W or higher |
| Intermodulation distortion: | better than -32 dBc |
| Suppression of harmonics: | < -50 dBc |
| Tube: | GU78B ceramic tetrode |
| Cooler: | Centrifugal blower + axial blower |
| Response speed of AUTO tune: | less than 0.5 s within same BAND, less than 2 s if out of BAND |
| Power supply: | switchable voltages – 220/230/240 V for 50 Hz or 230/240/250 V for 60 Hz (or other primary voltages e.g. 200 V 50/60 Hz for Japan) |
| Transformers: | 2 pcs. of toroidal transformer 3 kVA |
| Dimensions: | 485 mm x 200 mm x 455 mm (width x height x depth) |
| Weight: | 46 kg |
| Protection circuits: | – VSWR too high |
| – Anode current too high | |
| – Anode voltage error | |
| – Screen current too high | |
| – Screen voltage error | |
| – Grid current too high | |
| – Grid voltage error | |
| – Heating voltage error | |
| – Mistuning of PA | |
| – Temperature too high | |
| – Soft start for protecting your fuses | |
| – “switch-on blocking“ at opened amplifier | |
| Indications: | 4.3″ color touch screen display |
| Features: | High level of protection |
| Memory for faults and warnings, easy maintenance | |
| Automatic set-up anode current (BIAS) – no need to manually adjust after changing the tube | |
| Three programmable working modes of the axial blower | |
| Full QSK operation | |
| Many operational parameters to display | |
| REMOTE control – connector for LAN connection – remote control software free of charge | |
| Support automatic external ANT switching |