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Mux Tee


The Orbital Research “Mux Tee” (MT-25/40) is a premium bias tee multiplexer that does much more than insert DC current: it multiplexes a 10 MHz reference signal onto the L-band signal. And because it is a passive device that requires no power, it can work in reverse and extract a DC signal and/or demultiplex a 10 MHz reference from your modem.

The Mux Tee is 6 devices in 1:

  1. Bias tee
  2. 10 MHz multiplexer
  3. Both a bias tee and 10 MHz mux
  4. DC extractor
  5. 10 MHz demultiplexer
  6. Both a DC extractor and 10 MHz demux

The Mux-Tee filters the incoming IF signal and provides an effective block to any unwanted DC or 10 MHz that may be coming from the modem – delivering exceptional return loss and very low thru loss. In addition, the external DC and 10 MHz inserted signals are filtered to avoid any interference with the wanted IF signal.

Read the brochure ›

SIP Solutions

Systems Interface Products Although Combiners and Oscillators are also SIP products, we have narrowed the definition here to just include Bias Tees, Diplexers, Mux Tees, TTL Switches, Thru Tees, Dual Power Tees, etc.
Here are the standard applications for each of these products. Here’s how to insert 10 MHz, insert DC, extract 10 MHz, block DC, extract DC, multiplex DC L band and 10 MHz, and perform impedance transforms while you do it.

Using a Hi Power Thru Tee to power a BUC The modem has DC power, but not enough to power my new BUC.
4 Way Combiner with 10 MHz Oscillator and High-Power DC insert. I want to lock several modems to a single 10 MHz Oscillator and insert high-power DC into my BUC.
Orbital 2-way Combiner using 10 MHz from one of the modems and High-Power Mux Tee to insert DC power 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.
Orbital Combiner/Divider stripping out the 10MHz from only one of two modems 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.
Orbital Combiner/Divider using a MOS 10 MHz Oscillator I need to combine the L-Band signals from a pair of modems with a common, external 10 MHz source, and insert power to a pair of high-power BUCs.
Using an Orbital Hi Power Thru Tee to circumvent a divider or switch My modem does not have sufficient DC to power my BUCs, and I can’t switch DC power to the BUC, what to do?
Horizontal/Vertical Polarity 1 for 2 Redundant System 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 a Mux-Tee Using an Orbital MT-40 Mux Tee to multiplex the L-Band and 10 MHz reference signals with DC power for a BUC
Using a Bias Tee Using an Orbital MT-40 Mux Tee as a Bias Tee to insert DC Power into a BUC
Using a Diplexer Using an Orbital MT-40 Mux Tee as a Diplexer to insert a 10 MHz reference to a BUC
Using Redundant Power Tee Using an Orbital Redundant Power Tee provides inexpensive power supply redundancy
Using a Thru Tee 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

3D Drawing (Solidworks drawing is available on request)

Mechanical Drawing

The Orbital MT25/40 Mux-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.  This product may be used in its standard orientation, (as shown), or in reversed position – to extract, rather than insert 10 MHz signals and DC current.

Warranty: 3 years, repair or replace defective product


  • Highpass filtered L band:
    • rolloff below 900MHz, flat 950 thru 2100MHz
    • Assures DC block to Rx port and 10 MHz port
  • Filtered 10MHz
  • DC: 2.5A (12 to 24V) standard; 4.0A (12 to 48V) high power; 6.0A (12 to 24V) high current
  • Any combination of 50Ω and 75Ω in/out Impedance transforms, (eg. 75Ω J-1 to 50Ω J-2)
  • Very high Rx port to 10MHz port isolation, no leakage back to rx
  • Will not degrade phase noise performance
  • Exceptionally low insertion loss


  • Will operate with LNBs, BDCs, VSATs, BUCs, and Modems
  • Will operate in S-Band with 0.7 dB insertion loss (max) and in C-Band (3.4 to 4.2 GHz) with 1.0 dB insertion loss (max)
  • Has flexible sealant on lid-to-case interface; Connectors are O ring sealed. When properly sealing connectors with butyl tape, the Mux-Tee is ready for outdoor, weather resistant operation.
  • Will not cause loss of lock
  • Will not impair bit error rate


  • Machined from solid aluminum block for strength, stability and endurance
  • Anodized blue finish for corrosion and scratch protection, and excellent RF shielding/grounding
  • Labels are laser etched for durability
  • RoHS & REACH compliant
Options Option
Part Number
J1, J2: L-Band: To LNB/BUC & Receiver/Modem F
F, 75Ω connector
N, 50Ω connector
SMA, 50Ω connector
J3: DC Supply B
BNC (preferred) connector
N connector
SMA connector
J4: 10MHz B
SMA (recommended)
N connector
TNC connector
BNC-to-pigtail adapters and BNC-to-binding post adapters sold separately. See SIP price list for part number and price.Remember that the Orbital MT25/40 is BI-DIRECTIONAL

How to order

For pricing options please call 1-604-419-8585 or contact us.

Each connector type has an impedance of either 50 or 75 Ω.  Orbital uses 1 of 4 distinct boards to achieve the appropriate impedance transform:

V1 – 50 Ω to LNB/BUC, 50 Ω to Rx/modem
V2 – 75 Ω to LNB/BUC, 50 Ω to Rx/modem
V3 – 75 Ω to LNB/BUC, 75 Ω to Rx/modem
V4 – 50 Ω to LNB/BUC, 75 Ω to Rx/modem
International customers should note that pricing does not include freight, brokerage, local VAT, and customs charges.  Prices from our dealers in your area usually include these amounts.

The Orbital MT25/40 is a Bias Tee (and a Diplexer, and a Mux-Tee…)

Orbital MT25/40 Mux Tees function as bias tees (inserting DC power into the combined signal), as diplexers (inserting 10 MHz into the combined signal), and as mux tees inserting both DC power and 10 MHz reference).  The MT25/40 will also act as a DC block on the combined input port – thus allowing DC to be inserted.  It can also act as a low-loss impedance transform, depending on which connector combinations are chosen.

MT25/40’s also work in both directions – in reverse position, they can extract L-Band or 10 MHz signals.

The MT25/40 has less than 0.5 dB of insertion loss and filters and conditions its incoming signals.  It is the fundamental component of Orbital’s signal-routing solutions.

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For pricing options please call 604-419-8585 ext. 830 or contact us

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