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COLOCOIL® AM ISOCOUPLER

• 4G/LTE ready, isolates all antennas

• DC to 2700 MHz isolation

• No AM impact problem

• Ideal for AM directional arrays

• Modular and expandable

• Multiple coaxial cable isolation

• Low insertion loss, intermod

• Easy installation, low maintenance

 

 

Multiple antennas and future add-ons are no problem for the CoLoCoil® AM isocoupler. Even with different coax cable size requirements!

 

LBA’s modular approach allows the operator to start with one CoLoCoil®, and build out to 6, 9, or more – supporting 50 or more antennas!

Practically "plug and play", expansions are fast, minimize AM station impact, and maintain full grounding and lightning protection!

Truly the state-of-the-art in AM collocation, backed by over 25 years of colocation experience!

The LBA CoLoCoil® AM Isocoupler system permits trouble-free colocation of all wireless antennas on AM broadcast antenna towers – including directional arrays! With the CoLoCoil®, most wireless installations have virtually no effect on the host AM tower, and the AM station has no effect on wireless system coaxial cables and antennas. CoLoCoil® isocoupler modular systems are transparent to AC or DC voltages on coaxial cables. Thus, they present no problem to coaxial-powered tower top amplifiers, smart antennas, and other devices – even supporting AC and strobe tower lighting systems!

LBA CoLoCoil® modular iscoupler systems are ideal for 4G/LTE, Broadband and Cellular collocation. They feature a unique patent-pending configuration that allows the addition of multiple coaxial cable modules. New antennas can be accommodated at any time without system redesign. Modules are factory-adjusted to minimize field set-up, and only high stability components are used to eliminate periodic readjustment. Rugged coaxial connectors used at the input and output are the only RF path connections used, virtually eliminating intermodulation. RF path reliability and performance is that of the coaxial cable alone! Each coaxial path is sweep tested and measured for insertion loss before shipment and the documentation furnished to the user.

 

All modular CoLoCoil® isocouplers are rated to work with AM RF voltages typical on AM towers of 10,000 watts or less. Custom systems are available for all AM power levels. Custom isocouplers accommodate high power levels, special configurations and performance. Even non-coaxial cables, such as for active antennas and tower lighting, can be incorporated in custom CoLoCoil® co-location modules.

CoLoCoil®AM isocoupler modules are optionally equipped with a unique isolation and safety monitoring system. Front panel indicators permit instant visualization of isolation circuit status and RF presence. Alarm connections are provided for interface with site status and interlock systems.

For safety of user personnel, CoLoCoil®  isocoupler modules are designed so that no high RF voltages are readily accessible on the carrier side of the CoLoCoil®. A highly effective RF grounding system eliminates the AM "hot cabinet" problem. Additional features of the system include color-coding of all coaxial input/outputs and numbering for ready circuit identification and user inventory. A direct DC static ground and rugged spark gap provide lightning protection.

AM Colocation Photo Gallery

Just a sample of our Colocation Project

 

WVMT Colocation Equipment 
"Hot" Side View 

 

CoLoCoil® AM Isocoupler at WJOY Tower 
"Hot" Side View

 

Ice Bridge and Cable Runs 
for Colocation at WVMT in Vermont

 

CoLoCoils® AM Isocoupler at WJOY Tower 
"Cold" Side View

 

Overall PCS Installation at
Tower Base of WJOY



Colocoil® RRH - 24

The LBA Colocoil Remote Radio Head (RRH) uses a combination of inductive isolators and fiber optic isolators. For isolating multiple cables used in the (RRH) configurations on an AM tower, the ColoCoil RRH-24 allows the rapid addition of alarm, DC, RET and fiber connectins. New antennas can be accomodated at any time without system redesign. In response to rapid expansion of remote radio heads and AM colocation , LBAT also offers the ColoCoil - RRH 12 for 12 circuit isolation.

See specification sheet for details.

Colocoil® Model # RRH-24 Specification Sheet (pdf)



Quick Specs for Standard Isocoupler Models

• The CLC-MS308 CoLoCoil® isocoupler incorporates three coaxial RF paths with 1900 MHz insertion loss under 2 dB, VSWR under 1.3/1, and power rating of 1200 watts. Typically used in PCS, Broadband, Cellular and ESMR applications, this system is normally equipped with 7/16 DIN connectors. The CLC-MS308 CoLoCoil® isocoupler module is the same size as the CLC-MS605, and incorporates seamlessly into the master module system. Picture and Specifications for the isocoupler CLC-MS308 CoLoCoil®

• The CLC-MS605 CoLoCoil® isocoupler incorporates six coaxial RF paths with 800 MHz insertion loss under 2 dB, VSWR under 1.3/1, and power rating of 800 watts. Typically used in Paging, Public Safety, Cellular and ESMR applications, this system is also usable at PCS and broadband frequencies. Modules are normally equipped with 7/16 DIN connectors. The CLC-MS605 CoLoCoil® isocoupler module is the same size as the CLC-MS308, and incorporates seamlessly into the master module system. Picture and Specifications for the isocoupler CLC-MS605 CoLoCoil®

CLC-MS308 Colocoil AM Isocoupler Specifications

Rear view of two CLC-MS308 CoLoCoils in tandem

 
AM Isolation Performance
 

Effective Isolation Frequency

530 - 1700 kHz

RF Impedance (Zeff)

>2000 ohms

RF Standoff Voltage

2.5 kV RMS (Typical AM towers to 10 KW)

   
Communications Transmission Performance

Frequency range

DC - 2700 mHz

Isolated coaxial circuits

3

Connectors (Each circuit in and out)

7/16 DIN Male 
(N connectors optional)

Impedance (each circuit)

50 ohms

Return Loss (max per circuit)

>18 dB

Insertion Loss (typical per circuit)

 

150 mHz

<0.8 dB

450 mHz

<1.1 dB

900 mHz

<1.4 dB

1800 mHz

<1.8 dB

2500 mHz

<2.1 dB

Power Capability

 

150 mHz

7000 watts

450 mHz

3900 watts

900 mHz

2800 watts

1800 mHz

1900 watts

2500 mHz

1500 watts

   
Physical Characteristics
 

Lightning protection

Adjustable spark gap

Monitoring

RF presence, interlock, circuit condition monitors (optional)

Environmental

-40 Deg C to +40 Deg C @ 95% humidity

Construction

Outdoor aluminum cabinet, removable access panels, modular multi-cabinet coupling standard. Optional mounting base.

Size

38"w x 36"h x 48"d 
(97cm x 91cm x 122cm)

Weight (nominal)

200# (91 kg)

 

* Typical power ratings for single CW carrier, 1/1 VSWR, connector limited.


CLC-MS605 Colocoil AM Isocoupler Specifications

Front view of two CLC-MS605 CoLoCoils in tandem

 

AM Isolation Performance
 

Effective Isolation Frequency

530 - 1700 kHz

RF Impedance (Zeff)

>2000 ohms

RF Standoff Voltage

2.5 kV RMS (Typical AM towers to 10 KW)

   
   
Communications Transmission Performance

Frequency range

DC - 2700 mHz

Isolated coaxial circuits

6

Connectors (Each circuit in and out)

7/16 DIN Male
(N connectors optional)

Impedance (each circuit)

50 ohms

Return Loss max per circuit)

>18 dB

Insertion Loss (typical per circuit)

 

150 mHz

<1.0 dB

450 mHz

<1.5 dB

900 mHz

<2.1 dB

1800 mHz

<2.9 dB

2500 mHz

<3.7 dB

Power Capability 

 

150 mHz

2500 watts

450 mHz

1300 watts

900 mHz

900 watts

1800 mHz

600 watts

2500 mHz

400 watts

   
Physical Characteristics
 

Lightning protection

Adjustable spark gap

Monitoring

RF presence, interlock, circuit condition monitors optional.

Environmental

-40 Deg C to +40 Deg C @ 95% humidity

Construction

Outdoor aluminum cabinet, removable access panels, modular multi-cabinet coupling standard. Optional mounting base.

Size

38"w x 36"h x 48"d 
(97cm x 91cm x 122cm)

Weight (nominal)

200# (91 kg)

 

* Power ratings for single CW carrier, 1/1 VSWR, connector limited.

Inquiries and Orders

CONTACT INFO

3400 Tupper Drive,
Greenville, NC 27834, USA

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About LBA

LBA Group companies serve technical infrastructure needs related to the broadcast, wireless, electromagnetic compatibility and safety sectors worldwide. We provide consulting, training and other telecommunications industry services. We also produce and market hardware for radio transmission, RF shielding, safety and testing.

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