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MICROWAVE TUNING ELEMENTS
SG-670B
2
SPRAGUE-GOODMAN ELECTRONICS, INC., 1700 SHAMES DRIVE, WESTBURY, NY 11590 • TEL: 516-334-8700 • FAX: 516-334-8771
DIELECTRIC TUNING ELEMENTS
The use of a dielec-
tric rod (instead of a
metallic probe) for
the tuning element
will provide the low-
est loss tuning for
high frequency appli-
cations. When the
dielectric rod is intro-
duced into a microwave cavity it has the
effect of making the cavity electrically
larger, and lowering the resonant fre-
quency. Dielectric tuning elements are
excellent for adjusting the frequency of
Gunn diode and IMPATT oscillators.
MODEL NO.
A
B
C
D
E
F
G
H
GRDA70913SN
GRDQ30604SN
GRDS30604SN
GRDS70503SN
GRDS70907SN
0.267 0.629
0.280
0.359 0.525
0.152 0.215 0.234-64
6.78
16.0
7.11
9.12
13.3
3.86
5.46
0.135 0.260
0.160
0.240 0.168
0.062 0.205 0.120-80
3.43
6.60
4.06
6.10
4.27
1.6
5.21
0.135 0.260
0.160
0.240 0.168
0.062 0.205 0.120-80
3.43
6.60
4.06
6.10
4.27
1.6
5.21
0.267 0.219
0.280
0.210 0.115
0.152 0.175 0.234-64
6.78
5.56
7.11
5.33
2.92
3.86
4.45
0.267 0.369
0.280
0.359 0.265
0.152 0.215 0.234-64
6.78
9.37
7.11
9.12
6.73
3.86
5.46
Note: For hardware modifications and adjusting slot sizes see notes on
page 1.
MODEL NO.
A
B
C
D
E
F
THREAD-2A
GREA21712
GREA41108
GREA41209
GREA41613
GREA42319
GREB11310
GREB20301
GREB20402
GREB20503
GREB20603
GREB20604
GREB30604
GREB41411
GREB90904
GREQ81709
GRES20805
TUNING ROTORS
Metallic and dielec-
tric tuning rotors are
available for applica-
tions in which the
user wishes to pro-
vide threads in his
structure (instead of
using a bushing).
0.062 0.674 0.490
0.020 0.016 0.060
Alumina
0.94-80UNS
1.6
17.1
12.4
0.51
0.41
1.5
0.152 0.430 0.300
0.010 0.020 0.145
Alumina
0.190-64UNS
3.86
10.9
7.62
0.25
0.51
3.68
0.152 0.475 0.345
0.010 0.020 0.145
Alumina
0.190-64UNS
3.86
12.1
8.76
0.25
0.51
3.68
0.152 0.625 0.495
0.010 0.020 0.145
Alumina
0.190-64UNS
3.86
15.9
12.6
0.25
0.51
3.68
0.152 0.884 0.750
0.010 0.020 0.145
Alumina
0.190-64UNS
3.86
22.5
19.1
0.25
0.51
3.68
0.040 0.500 0.385
0.020 0.016 0.040
Brass
0.060-80UNF
1.0
12.7
9.78
0.51
0.41
1.0
0.072 0.122 0.030
0.020 0.016 0.060
Brass
0.094-80UNS
1.8
3.10
0.76
0.51
0.41
1.5
0.072 0.165 0.075
0.020 0.016 0.060
Brass
0.094-80UNS
1.8
4.19
1.9
0.51
0.41
1.5
0.060 0.215 0.100
0.020 0.016 0.060
Brass
0.086-56UNC
1.5
5.46
2.54
0.51
0.41
1.5
0.072 0.215 0.125
0.020 0.016 0.060
Brass
0.094-80UNS
1.8
5.46
3.18
0.51
0.41
1.5
0.072 0.237 0.147
0.020 0.016 0.060
Brass
0.094-80UNS
1.8
6.02
3.73
0.51
0.41
1.5
0.125 0.250 0.148
0.010 0.020 0.120
Brass
0.156-64UNS
3.18
6.35
3.76
0.25
0.51
3.05
0.160 0.554 0.450
0.010 0.020 0.145
Brass
0.190-64UNS
4.06
14.1
11.4
0.25
0.51
3.68
0.345 0.370 0.150
0.030 0.060 0.320
Brass
0.375-64UNS
8.76
9.40
3.81
0.76
1.52
8.13
0.320 0.652 0.372
0.030 0.060 0.320
Quartz
0.375-64UNS
8.13
16.6
9.45
0.76
1.52
8.13
0.062 0.300 0.178
0.020 0.016 0.060
Sapphire
0.094-80UNS
1.6
7.62
4.52
0.51
0.41
1.5
D
B
A
METAL
C
ADJUSTING
SLOT "E" x "F"
D
B
A
DIELECTRIC
ROD
C
ADJUSTING
SLOT "E" x "F"
ROD
MATERIAL
A
B
E AT MAX
TRAVEL
F
C
D
G
"H" UNS-2 THD
HEX NUT
ADJUSTING
SLOT
OPTIONAL BUSHING SLOT
0.04
1
0.04
1
X
All dimensions are in / mm.
Custom sizes available.
All dimensions are in / mm.
Custom sizes available.
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