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Tower Top Amplifier (TTA)
A TTA places a low-noise preselector and low-noise amplifier (LNA) at the tower top, close to the receive antenna. This location minimizes feeder loss and reduces the overall receive noise figure—delivering stronger uplink “talk-back,” wider coverage, and more reliable site access in LMR/PMR systems. High-quality filtering and strong linearity help prevent overload and intermodulation.


Sinclair advantage: Sinclair TTA systems are delivered as a matched package with the TTA and receiver multicoupler/controller together. This integrated approach optimizes end-to-end performance, simplifies integration, and ensures a balanced site design.
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Expandable Multicoupler
Expandable Multicouplers are an easy way to expand a transmit combiner/receiver multicoupler in Low Band, Aviation, and VHF bands without using a critical length cable. Sinclair’s C-Series pass-reject multicouplers offer excellent performance combined with the ease of expandability required in many multicoupling systems.

78 products

C2037W-1Q-(X)-(Y)
Exp multicoupler, C Series, 7" cavities, three bandpass, one 'Q', 136-174 MHz
$0.00
C2037-3-1
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 146-150 MHz
$0.00
C2037-2-3
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 140-146 MHz
$0.00
C2037-3-4
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 160-165 MHz
$0.00
C2037-3-3
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 155-160 MHz
$0.00
C2037-2-2
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 136-140 MHz
$0.00
C2037-3-2
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 150-155 MHz
$0.00
C2037-1-5
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 132-137 MHz
$0.00
C2037-1-2
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 114-120 MHz
$0.00
C2037-1-1
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 108-114 MHz
$0.00
C2034-3-1.6
Exp multicoupler, Res-Lok, pass-reject, 1.6 dB IL, 155-174 MHz
$0.00
C2037-1-4
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 126-132 MHz
$0.00
C2037-1-3
Exp multicoupler, pass-reject, 7" cavities, 3 pass, 1 reject, 120-126 MHz
$0.00
C2034-2-1.6
Exp multicoupler, Res-Lok, pass-reject, 1.6 dB IL, 136-155 MHz
$0.00
C2034-3-3.1
Exp multicoupler, Res-Lok, pass-reject, 3.1 dB IL, 155-174 MHz
$0.00
C2034-2-3.1
Exp multicoupler, Res-Lok, pass-reject, 3.1 dB IL, 136-155 MHz
$0.00
C2034-1-1.6
Exp multicoupler, Res-Lok, pass-reject, 1.6 dB IL, 118-136 MHz
$0.00
C2027-3-3
Exp multicoupler, pass-reject, 7" cavities, 2 pass, 1 reject, 155-160 MHz
$0.00
C2027-3-1
Exp multicoupler, pass-reject, 7" cavities, 2 pass, 1 reject, 146-150 MHz
$0.00
C2027-3-5
Exp multicoupler, pass-reject, 7" cavities, 2 pass, 1 reject, 165-174 MHz
$0.00