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To increase radio range, an external 451/651 antenna can be used. The standard
451/651 antenna is replaced with a lightning arrestor that YOU MUST GROUND. The
external antenna is mounted above the 451/651 with a cable to the lightning arrestor.
To provide additional lightning protection, install a lightning rod above the antenna to
protect the system. See
§7.4 Outdoor/External Antenna Setup
setting up outdoor/external antennas at the 451/651.
19.1 Example Nano Radio Network
See the example Nano radio network on the next page. Note, newer 451/651 firmware
(V2.00+) is required to work with Nano radios. Spectra and Nano radios will not talk to
each other.
To extend the distance between the base station and the 451/651s at addresses 5 and
6, the repeater at address 2 is used.
Instrument radios can also be configured as a repeater. In the example network, the
451/651 at address 3 is used to reach the 451/651 at address 4. To configure a
451/651 as a repeater, set the SYSTEM / FACTORY / RADIO menu item at the 451/651
to “NANO RP” (instead of “NANO”), and then set the NET ID, address, up address, and
other radio parameters as appropriate using the SYSTEM / RADIO menu at the
451/651.
Check the Repeaters option in the Radio Settings pane of the System tab on the
Settings form (
§13.2 Settings - System Options
