Extension Cables
Best Practices

Extension Cables

Extension Cables

SNAP Light Controllers have an integrated power amplifier, with significant output power. See below for details.

Best Practices


Extension Cables

Every connection between the SNAP radio and the antenna will create a small amount of loss.

As a rule of thumb:

  • Every connection introduces .5 dBi of signal loss
  • Every foot of good quality RF cable introduces .5 dBi of signal loss

Refer to the antenna cable’s datasheet for the exact amount of loss. A specified loss of more than 0.5dB per foot is generally unacceptable and may indicate an inferior cable design.

SNAP Light Controllers have an integrated power amplifier, with significant output power. See the list below for the output power of the different SNAP controllers and the recommended antenna gain for each SNAP Light Controller. Do not substitute antennas.

SNAP Light Controller

Controller Gain

Indoor Antenna Gain

Outdoor Antenna Gain

LP150-001

15dBi

3.2dBi

1.5dbi

DIM10-087

20dBi

3.2dBi

1.5dbi

DIM10-100-00

20dBi

3.2dBi

1.5dbi

DIM10-250-11

20dBi

3.2dBi

1.5dbi

DIM10-280-21

20dBi

3.2dBi

1.5dbi

The following two examples are typical outdoor installations. Even with cables and connections the output power for both examples is excellent and the SimplySnap communications will be excellent.

A – Standard Antenna Kit + DIM10-250-11

SNAP module

+20dBm

Outdoor Antenna

+1.5dBi

Internal – Cable (Module to Bulkhead Connector)

Connection

-.5dBi

Cable

-.5dBi

External – Cable to Bulkhead Connector

Connection

-.5dBi

Cable

-.5dBi

Connection Cable to Bulkhead

-.5dBi

Connection Antenna to Bulkhead

-.5dBi

Total Output Power

+18.5dBm

B - Add a 10 Foot Cable to the Above Example

Antenna Kit + DIM10-250-11 + 10 Foot Cable

Antenna Kit + DIM10-250-11

+18.5dBm

10 Foot Cable

-5.0dBi

Total Output Power

+13.5dBm