MG5267 S-Band Magnetron

 

ABRIDGED DATA
Fixed frequency pulse magnetron. It is an improved version of the M5063/2J70B and is a direct replacement for the latter, being fully interchangeable both mechanically and electrically An EEV long-life cathode is incorporated in the MG5276. The improved efficiency of of the tube results in higher peak output power for the same input conditions as 2J70. The rugged ceramic/metal construction of the MG5267 reduces the risk of mechanical failure during handling and installation compared with 2J70B.
Operating frequency	3050 ± 25				MHz
Typical peak output power	56				kW
Output	probe radiating into waveguide launching section
Magnet	integral
Launching section	not supplied
Electrical			Mechanical
Cathode	indirectly heated		Overall dimensions	see outline
Heater voltage (see note 1)	6.3	V	Netweight	1.7 kg approx
Heater current at 6.3V	1.25	A	Mounting position	any
Cathode pre-heating time (minimum)	3.0	min	Cooling(see note 2)	natural or forced-air
Heater starting current, peak value, not to be exceeded	6.0	A max	A minimum clearance of 50 mm must be maintained between the magnetron and any magnetic materials.

NOTES

1. With no anode input power.
On the application of anode power, the heater voltage must be reduced as follows:
Mean input power Heater voltage
(W) (Vrms)
less   than   25 6.3
  25     to     62 5.3
  62     to     100 4.5
The magnetron heater must be protected against arcing by the use of a minimum capacitance of 4000 pF shunted across
the heater directly at the input terminals; in some cases a capacitance as high as 2 mF may be necessary depending
on the equipment design. For further details see the Magnetron Preamble.

2. The anode temperature must be kept below the limit specified by means of a suitable flow of air over the anode body.

 

OUTLINE (All dimensions without limits are nominal)