INCH-POUND
MIL-PRF-1/1688C
4 August 2009
_
SUPERSEDING
MIL-PRF-1/1688B(USAF)
25 June 1999
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, MAGNETRON
TYPE 8798
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
The requirements for acquiring the electron tube described herein
shall consist of this document and the latest issue of MIL-PRF-1.
DESCRIPTION:
Pulsed, tunable frequency range 2.7 GHz to 2.9 GHz, rated peak power output 800 kW, external magnet,
coaxial line output, forced-air cooled.
ABSOLUTE RATINGS:
Parameter:
Ef
epy
ib
Pi
pi
tp
sec
Unit:
V
kv
a
W
kW
32
70
1,300
200
2.5
Maximum:
17
--- 1/
---
---
---
---
---
Minimum:
Parameter:
Du
tk
VSWR
Anode T
rrv
Alt.
C
kV/s
Unit:
---
sec
---
Ft
Maximum:
.0011
---
1.35
120
150
12,000
Minimum:
00
120
---
---
---
---
PHYSICAL CHARACTERISTICS:
Dimensions:
See outline drawing.
Weight:
6.5 pounds approximately.
Mounting position:
Any.
Cathode:
Unipotential.
TEST CONDITONS:
Parameter:
Ef
Magnetic field
tpc
Du
rrv
prr
tk
sec
kV/s
Unit:
V
H
---
---
sec
Test 1:
2,700
0.7
---
.0007
110
1,000
180
Test 2:
2,700
2.0
---
.0007
110
350
180
Test 3:
2,700
1.0
10
.001
150
1,050
---
50 4/
0.1
5% 1/
Tolerance:
---
---
---
---
Parameter:
tfc
trc
trv
VSWR
Ib
sec
sec
sec
Unit:
---
mA dc
Test 1:
0.50
0.125
0.15
1.15 max
46
Test 2:
0.50
0.125
0.15
1.15 max
46
Test 3:
0.50
0.125
0.15
1.35 max
39.5
0.10
0.045
0.05
5%
Tolerance:
---
See footnotes at end of table I.
GENERAL:
Qualification - Required.
AMSC N/A
FSC 5960
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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