OM Power OM3501A automatic linear tube amplifier 3500 Watt

General description and advantages of the OM3501A amplifier

The OM3501A automatic linear amplifier is designed for all shortwave amateur bands from 1.8 to 29 MHz (including WARC bands) and all modes. It features a piece of GU78B ceramic tetrode.

The advantages of OM3501A:

Full compatibility with TRXs-CAT

- I'M COMING

- YAESU

- ELECRAFT

- Ten-Tec Orion

- Kenwood

- Icom transceive protocol via microHAM devices - CI-V output (MK II, MK2R, MK2R+, etc.)

- Flex Radio Series 6xxx

- Apache Labs Anan

RF sensitive band and frequency switching, for use with radios that do not have CAT

Automatic switching between bands

Automatic tuning with the band based on segments

Automatic band pass filter switching - BAND DATA output compatible with YAESU radios (BCD code)

Automatic switching of antenna switches - maximum number of antennas is 10, controlled by BCD output code

Remote control via PC Windows application

OM3501A Specifications:

Frequency coverage: amateur bands 1.8 - 29.7 MHz including WARC

Power: 3500 W in SSB and CW on HF bands,

3000W in RTTY / FM

Input power:30 to 80W for maximum 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: Automatically switches to STBY when reflected power is 350W or more

Intermodulation distortion: better than -32dBc

Harmonic suppression: <-50 dBc

Tube: GU78B ceramic tetrode

Cooling device: centrifugal fan + axial fan

AUTO melody response speed: less than 0.5 s within the same BAND, less than 2 s if outside the BAND

Power supply: switchable voltages - 220/230 / 240V for 50Hz or 230/240 / 250V for 60Hz

(or other primary voltages, e.g. 200V 50/60Hz for Japan)

Transformers: 2 pieces of 3kVA toroidal transformer

Dimensions: 485 x 200 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

 - Mains current too high

 - Mains voltage error

 - Heating voltage error

 - Mistuning by PA

 - Temperature too high

 - Soft start to protect fuses

 - "ignition lock" on open amplifier

Indications: 4.3" color touchscreen display

Features: high level of protection

 Memory for faults and warnings, easy maintenance

 Auto-setting anode current (BIAS) - no need for manual adjustment after tube replacement

 Three programmable working modes of the axial blower

 QSK operation complete

 Many operating parameters to display

 Remote control - connector for LAN connection - free remote control software

 Supports automatic external ANT switching