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SRT Series
Indoor 5-1000 MHz Taps
The Blonder Tongue SRT Series of indoor 1 GHz taps are the standard for directional couplers used in broadband
systems, such as those in educational, correctional, commercial, and MDU’s. Models are available with 2, 4, and 8
tap ports and have tap values from 35 dB to 4 dB (model dependent) in 3 dB increments. All models have die-cast
housings and provide RFI shielding of 120 dB.
SRT-2A SRT-4A
Features
• 1 GHz Bandwidth
• 2, 4 and 8 Port Models
• 120 dB RFI Shielding
• Diecast Housing
• Built-in Ground Block
Ordering Information
SRT-8A
Model Stock # Description
SRT-2A
SRT-4A
SRT-8A
1942
1944
1948
Directional Tap, 2 Output 5-1000 MHz, In-Line Style (Values 4, 8, 11, 14, 17, 20, 23, 26, 29, 32 dB)
Directional Tap, 4 Output 5-1000 MHz, In-Line Style (Values 8, 11, 14, 17, 20, 23, 26, 29, 32, 35 dB)
Directional Tap, 8 Output 5-1000 MHz, In-Line Style (Values 11, 14, 17, 20, 23, 26, 29, 32, 35 dB)
Blonder Tongue is ISO 9001:2015 Certified
Rev: 080317
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DRAFT
Specifications
0.7
0.7
0.7
1.0
1.2
1.4
18
20
20
16
40
45
42
28
1.0
1.5
2.0
SRT-4A
Tap Value (dB): 8 11 14 17 20 23 26 29 32 35
Insertion Loss
5 MHz:
300 MHz:
400 MHz:
500 MHz:
600 MHz:
1000 MHz:
Return Loss (In/Out)
5-10 MHz:
10-50 MHz:
50-450 MHz:
450-750 MHz:
750-1000 MHz:
Return Loss (Tap)
5-10 MHz:
10-750 MHz:
750-1000 MHz:
Isolation Tap-to-Tap
5-10 MHz:
10-450 MHz:
450-750 MHz:
750-1000 MHz:
Isolation Out-to-Tap
5-400 MHz:
400-500 MHz:
500-600 MHz:
1000 MHz:
Tap Tolerance (± dB)
5-450 MHz:
450-750 MHz:
750-1000 MHz:
SRT-2A
Tap Value (dB): 4 8 11 14 17 20 23 26 29 32
Insertion Loss
Return Loss
750-1000 MHz:
Return Loss (Tap)
750-1000 MHz:
Isolation Tap-to-Tap
750-1000 MHz:
Isolation Out-to-Tap
600-1000 MHz:
Tap Tolerance (± dB)
550-1000 MHz:
* Terminated (no thru-put) * Terminated (no thru-put)
5 MHz:
300 MHz:
450 MHz:
500 MHz:
600 MHz:
1000 MHz:
5-10 MHz:
10-50 MHz:
50-750 MHz:
5-10 MHz:
10-50 MHz:
50-750 MHz:
5-10 MHz:
10-450 MHz:
450-750 MHz:
5-400 MHz:
400-500 MHz:
500-600 MHz:
5-10 MHz:
10-550 MHz:
*
4.2
2.4
1.7
1.2
1.0
0.7
0.7
*
4.2
2.4
1.7
1.2
1.0
*
4.2
2.4
1.7
*
4.9
*
*
18
20
18
16
n/a
n/a
n/a
n/a
1.0
1.0
1.0
2.8
5.5
3.0
6.0
3.6
16
18
18
20
18
20
16
16
22
25
20
23
17
21
15
17
1.0
1.0
1.0
1.0
1.5
1.5
1.8
2.0
2.6
18
20
20
16
28
25
22
18
1.0
1.5
1.5
1.2
1.5
1.8
2.1
18
20
20
16
31
28
25
20
1.0
1.5
1.5
1.0
1.1
1.3
1.6
18
20
20
16
16
18
20
18
22
26
25
22
35
32
29
22
1.0
15
1.5
0.7
0.7
1.0
1.2
1.4
18
20
20
16
36
35
33
25
1.0
1.5
1.5
0.7
0.7
1.0
1.2
1.4
18
20
20
16
38
39
36
25
1.0
1.5
2.0
0.7
0.7
0.7
1.0
1.2
1.4
18
20
20
16
40
42
39
27
1.0
1.5
2.0
SRT-8A
18
20
18
18
16
n/a
n/a
n/a
n/a
1.0
1.0
1.5
*
3.5
1.8
1.0
0.7
0.7
0.5
0.5
0.5
*
3.5
1.7
1.0
0.7
0.6
0.5
*
4.0
2.1
1.5
1.1
*
4.5
2.3
*
5.5
*
6.5
18
20
18
18
16
24
24
21
20
1.0
1.0
1.5
2.5
3.0
16
18
18
18
16
27
25
21
20
1.0
1.5
2.0
1.8
2.0
2.5
18
20
20
18
16
31
26
23
22
1.0
2.0
2.0
1.3
1.5
1.8
18
20
20
18
16
33
31
27
24
1.0
2.0
2.0
0.8
1.2
1.3
1.5
18
20
20
18
16
18
20
18
22
26
25
22
37
34
29
26
1.0
2.0
2.0
0.7
1.0
1.1
1.3
18
20
20
18
16
38
37
31
27
1.0
2.0
2.0
0.5
0.7
0.8
1.0
1.3
18
20
20
18
16
40
40
35
27
1.0
2.0
2.0
0.5
0.7
0.8
1.0
1.3
18
20
20
18
16
43
42
38
30
1.0
2.0
2.0
0.5
0.5
0.7
0.8
1.0
1.3
18
20
20
18
16
45
45
40
30
1.0
2.0
2.0
Tap Value (dB): 11 14 17 20 23 26 29 32 35
Insertion Loss
Return Loss (In/Out)
Return Loss (Tap)
Isolation Tap-to-Tap
Isolation Out-to-Tap
Tap Tolerance (± dB)
* Terminated (no thru-put)
5 - 50 MHz:
50 - 450 MHz:
450 - 750 MHz:
750 - 1000 MHz:
5 - 10 MHz:
10 - 50 MHz:
50 - 450 MHz:
450 - 750 MHZ:
750 - 1000 MHz:
5-10 MHz:
10 - 750 MHz:
750 - 1000 MHz:
5-10 MHz:
10-450 MHz:
450-750 MHz:
750 - 1000 MHz:
5-10 MHz:
10-50 MHz:
50-450 MHz:
450-750 MHz:
750-1000 MHz:
5-450 MHz:
450-750 MHz:
750-1000 MHz:
18
20
20
18
16
n/a
n/a
n/a
n/a
n/a
1.0
1.5
2.0
*
3.5
1.9
1.2
0.8
0.8
0.7
*
4.0
2.3
1.5
1.0
*
4.2
2.4
*
4.5
18
20
20
18
16
30
30
26
24
24
1.0
1.5
2.0
2.5
16
18
18
18
16
28
28
25
24
24
1.0
1.5
2.0
1.8
2.0
18
20
20
18
16
36
35
32
30
26
1.0
1.5
2.0
1.2
1.4
18
20
20
18
16
36
36
33
30
26
1.0
1.5
2.0
0.9
1.0
1.2
18
20
20
18
16
18
18
18
22
26
25
22
38
35
32
30
28
1.0
1.5
2.0
0.8
1.0
1.0
18
20
20
18
16
38
36
32
30
28
1.0
1.5
2.0
0.7
0.8
1.0
1.0
18
20
20
18
16
38
36
32
30
28
1.0
1.5
2.0
0.7
0.8
1.0
1.0
18
20
20
18
16
38
36
32
30
30
1.0
1.5
2.0
Blonder Tongue Laboratories, Inc. • One Jake Brown Road, Old Bridge, NJ 08857 • USA • 800-523-6049 • www.blondertongue.com
©2017 Blonder Tongue Laboratories, Inc. All Rights Reserved. Specifications subject to change without notice. All trademarks are property of their respective owners.
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