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Co-Phase Coax

Co-Phase Coax

Use a co-phase harness for dual antenna installations. A single coax is 50 ohms. A co-phase harness is 72 ohms before it splits into 50 ohms for each antenna. This is important for a good SWR. If you try to connect two single coax lengths to a T connector for dual antennas, you may run into high SWR issues.

It is very important to select the appropriate coax for your system and vehicle. It is essential that the end of the coax that attaches to the mount will be compatible with the mount that you select. Be sure to check out our Help Center with information regarding these topics. You can also try to search for your vehicle model to find options.

Selecting the correct coax

Selecting mounts

 
$21.55 $17.24
Barjan, Barjan
300S8X9C2 - 9' Gray Co-Phase Coaxial Cable
In stock
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$34.08 $27.26
Procomm
AF18D - ProComm 18' Armorflex Co-Phase Coax Dual Shield
In stock
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$23.49 $18.79
DHXXN13 - ProComm Dual CB Antenna Coax
In stock

$44.15 $35.32
Firestik
K9X - Firestik FireFlex Dual Antenna Coax Cable
In stock
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$49.81 $39.85
Firestik
K9A - Firestik 18' Dual Lead Coax w/PL259s
In stock
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$44.15 $35.32

FireStik K9X - Fire-Flex Dual Antenna Coax Cable

In stock

$20.26 $16.21
Marmat, Marmat
PLL12X - Marmat 12' Co-Phase Harness Coax with Lug Connector (Bulk)
In stock
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$24.79 $19.83
Marmat, Marmat
PLL18X - Marmat 18' Co-Phase Harness Coax Cable
In stock
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$13.20 $10.56
Marmat
PLL9 - Marmat 9' Cophase Harness Coax with Lug Connectors
In stock
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$12.64 $10.11
Marmat
PLL9X - Marmat 9' Cophase Harness Coax with Lug Connectors (Bulk)
In stock
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$25.00 $20.00
Marmat, Marmat
PPP12 - Marmat 12' Cophase Harness Coax W/PL259 Connectors
In stock
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$31.45 $25.16
Marmat, Marmat
PPP18 - Marmat 18' Cophase Coax W/Pl259 Connectors
In stock
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$34.08 $27.26
Procomm
PPP18XJ - ProComm 18' Co-Phase Coax Cable
In stock
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$21.55 $17.24
Twinpoint, Twinpoint
PPP9X - 9' Cophase Coax W/PL259 Connectors (Bulk)
In stock
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$39.11 $31.29
Procomm
PR18SD8XN13 -ProComm 18' RG8X Co-Phase Harness Coax Cable
In stock
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$23.49 $18.79
Procomm, Procomm
PR9SD8X-CL - ProComm 9' Cophase Coax Rg8X W/Clear Jacket
In stock
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