System Interface Products (SIP)
System Interface Products (SIP)
TT-25/40 Thru Tee
TT-25/40 Thru Tee
The Problem
You need a higher power BUC, but your modem cannot supply adequate DC. You need a bias tee, and a separate power supply. But conventional Bias Tees shunt the 10 MHz reference signal to AC ground! You could use the MT25/40 Orbital Mux/Tee, if you have a separate 10 MHz signal, but your modem only supplies 10 MHz up the cable with the L band signal. Ordinary Bias Tees filter the L band signal, stopping the 10 MHz signal from passing through. What to do?
Orbital's Solution
Orbital Research introduces the Thru-Tee, which passes both L band AND 10 MHz signals from the modem to the BUC, with less than a single dB of insertion loss, yet allows the injection of up to 2.5A (standard) and 4.0A (optional) of current at 12 to 24 or 12 to 48 volts DC respectively. Install your new BUC and hook up your new power supply and existing modem to the Thru Tee. Now you have a low cost, high quality, plug and play solution.
Orbital Features
The Orbital TT25/40 Thru Tee is the kind of Bias Tee you were always looking for - the kind that passes the 10 MHz reference with low loss. Now you can insert power and not lose or degrade your 10 Mhz signal. Standard Bias Tees either block the 10 MHz reference, or greatly attenuate it.
Orbital TT-25/40 Thru Tee (Bias Tee with 10 MHz pass-through)
Features
Custom Engineering
- Selective Filter Network: filtered 10 MHz band-pass and a filtered L band, 900-2100 MHz selective band pass system
- Lowpass filtered DC:
- 12 to 24 VDC - 2.5 amp standard,
- 12 to 48 VDC - 4.0 amp optional
- Low band-pass ripple
- Low L band through loss
- Superior Input and Output VSWR
- Will not degrade phase noise performance
- Low 10 MHz insertion loss
Functional
- Will operate with LNBs, VSATs, BUCs, Receivers, and Modems
- Connectors O ring sealed for weather resistant operation
- Will not cause loss of lock
- Will not impair bit error rate
Structural
- Machined from solid aluminum block for strength, stability, and endurance
- Allodyne Mil-Spec finish for corrosion protection
- Excellent RF shielding and grounding
- 'Back O Rack' mounting bracket for ease of installation and lead dress
- Fewer cables and connectors yields less signal degradation
- Design creates less mess and better lead dress and stability
Flexible Solutions:
An Orbital TT25/40 has a selective filter network that filters and passes both 10 MHz and L band while it inserts DC power.
Made for Professional Use, Made for Satellite
Orbital Systems Interface Products are made specifically for the satellite industry, and are designed for professional and industrial quality systems. Orbital SIP products are built for rack mounting, and for use indoors or out. They are also perfect at the dish or in the rack for creating a test point for live signals - without degrading ongoing operations.
TT25/40 - Thru Tee Specifications
Click to download specs & mechanical PDF
Mechanical Drawing
The Orbital TT25/40 Thru Tee is built for indoor mounting back-o-rack, but its 'O' ring sealed connectors and corrosion protection due to its Allodyne finish, also allow for outdoor use. The TT-25/40 is the Bias Tee you've always wanted - it passes the 10 MHz as well as the L-band signal while you insert DC power, and it has a spare 10 MHz port to monitor the reference signal.

TT-25/40 Thru Tee Options
| Options | Values | |
| L-Band: To LNB/BUC | N | N, 50W (recommended to modem only) |
| S | SMA, 50W (not available for high power) | |
| L-Band: To Rx/Modem | N | N, 50W |
| S | SMA, 50W | |
| DC Supply | B | BNC (preferred) |
| F | F (not recommended) | |
| N | N connector | |
| FT | Feedthrough | |
| BBi | BNC with Binding Post Adapter | |
| BP | BNC with Pigtail Adapter | |
| 10 MHz Test Point/Monitor | B | BNC (industry standard) |
| S | SMA (recommended for outdoor use) | |
| N | N |
| SIP Solutions | |
Systems Interface Products |
|
| Modem has DC power, but not enough to power my new BUC. | |
| I want to lock several modems to a single 10 MHz Oscillator, and insert high power DC to my BUC. | |
| I have a pair of modems, one of which provides a 10 MHz reference, but I don't have enough power from my modem for my new high power BUC. | |
| I have a pair of modems and I need to use the 10 MHz reference from one of them and split it. I need to take the L-Band signal from both modems and combine it with the 10 MHz reference. Now I need to insert DC power for a pair of high power BUCS. | |
| I need to combine the L-Band signals from a pair of modems with an common, external 10 MHz source, and insert power to a pair of high power BUCs. | |
| My modem does not have sufficient DC to power my BUCs, and I can't switch DC power to the BUC, what to do? | |
| We need a system that will provide us with both horizontal and vertical polarities at Ku Band. In addition, the system must offer 1 for 2 redundancy. | |
| More SIP Solutions | |
| Using an Orbital MT-40 Mux Tee to multiplex the L-Band, and 10 MHz reference signals with DC power for a BUC. | |
| Using an Orbital MT-40 Mux Tee as a Bias Tee to insert DC Power to a BUC | |
| Using an Orbital MT-40 Mux Tee as a Diplexer to insert a 10 MHz reference to a BUC | |
| Using an Orbital Redundant Power Tee provides inexpensive power supply redundancy. | |
| Using an Orbital Thru Tee to provide a separate DC power supply to the BUC, while passing the 10 MHz signal through from the modem. | |
Here's a few LNB solutions, for adding additional services, or perhaps you have just purchased a new LNB with external DC or dual DC. There are a few external reference examples as well. |
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