EMCO 4630 Reference Radiator | 10 kHz to 1 GHz

The EMCO 4630 Reference Radiator is a precise highly stable field strength transfer standards with selectable frequency spacings over the range of 10 kHz to 1 GHz. The EMCO 4630 consists of a small battery powered comb generator with a loop and two dipole transmit antennas, a coaxial output adapter, and a remote control unit with GPIB interface.

Product Info Related Products

Frequency Range: 10 kHz to 1 GHz
Comb Generator Ranges: 0.01-1 MHz (Line Spacing: 0.1 MHz, Power Output: -17 to -20 dBm); 1-100 MHz (Line Spacing: 1 MHz, Power Output: -10 to -18 dBm); 100-1000 MHz (Line Spacing: 5 MHz, Power Output: -10 to -30
Includes: Comb Generator, Remote Control Unit, 10 m Fiber Optic Cable, Power Supply 9 VDC, Square Loop Antenna Assembly, Short Dipole Antenna Elements Balun Assembly, Long Dipole Antenna Elements Balun Assembly, Support Base, Support Block, Clamp Block, Battery Charger with Cable, Coax Adapter, REFRAD Manual, Carry Case

Functional description
- Comb generator
  - Remote control decoder
  - Crystal oscillator and divider
  - Switching power supply
  - Pulse generator
  - Matching network
- Remote Control Unit
  - GPIB – bus decoder
  - Remote control signal encoder
  - Selection and display unit
Typical Use

Set up comb generator and remote control unit.
Connect both devices via the fiber optic cable. You may clean the connectors with a soft lint-free cloth if necessary.
The comb generator has to be operated in remote mode to be used with the remote control unit.
Operation by a remote computer is possible. (see the ‘Remote Control Unit’ section)
The comb generator should be recharged after each use. (battery charger with cable and power supply supplied)

Comb Generator Operation

Plug the selected antenna elements into the balun on the comb generator.
For horizontal and vertical antenna polarization, use the supplied support base, support rod, and clamp bock for tripod mounting.
Select any comb spectrum by rotating the front panel knob to the desired setting (0.01 MHz, 1.0 MHz, or 5.0 MHz). To transfer to the remote control unit rotate the knob to the “REMOTE” setting.
To recharge the comb generator after use, put the ON/OFF switch in the CHARGE/OFF position and insert the battery charger output plug into the comb generator’s input socket.