— Installer Guide
Permaconn PM54
External Antenna Kit
The PM54 combines a 4G alarm communicator with a dual-SMA MIMO cellular modem. When the stub antenna isn't cutting it — plant rooms, basements, fringe sites — this guide covers the right external antenna and cable assembly for the job.
SMA ×2
Connector Type
MIMO
Dual Port
680–2700
MHz Range
7 dBi
Low-Band Gain
About the Permaconn PM54
The Permaconn PM54 is a next-generation alarm communicator and 4G router widely deployed across commercial and industrial alarm monitoring installations in Australia. It uses dual-SMA MIMO cellular ports plus a separate WiFi antenna port.
The included stub antennas perform well in open, above-ground environments. In metal enclosures, basements, and fringe-coverage sites, an external antenna is required — and MIMO gains are only realised when both antenna ports are connected to separate antennas with physical separation.
PM54 Antenna Ports
When an external antenna is required
Metal plant rooms and comms rooms
Steel enclosures and MDF rooms create a Faraday cage that kills the PM54's built-in stub antenna. A cable run to an external wall-mount omni restores full signal. Two cable runs for MIMO.
Basement and sub-level installs
Underground plant rooms commonly have –100 dBm or worse cellular signal. External antenna routed up to a street-level enclosure or external wall bracket solves this permanently.
Fringe and semi-rural sites
Remote commercial sites where the PM54's built-in antenna gives inconsistent signal. A 7 dBi external omni provides the link margin to hold a 4G connection on a marginal tower.
High-density apartment buildings
Multiple competing devices and building materials degrade signal on upper floors. External antenna positioned at the external face of the building dramatically improves signal quality and reliability.
Recommended D&G Products for PM54
All antennas and cable assemblies tested before dispatch. Custom cable runs quoted to your site drawings.
XC3800-MIMO — MIMO Omni, Dual Port
Dual-port MIMO omni in one housing, for when two separate antennas can't be mounted apart. 6 dBi from 1700 to 2700 MHz, 3 dBi on the low band. N Female ports: connect to the PM54's two SMA ports with N Male to SMA Male leads.
DG900MB-HG — High Gain Multiband Omni
For single-port PM54 antenna configurations or where MIMO is not required. Covers the main Australian 4G bands. Its SMA Male lead screws straight onto the PM54's 4G Main SMA port. Use two, mounted apart, for MIMO on 4G Main and Aux.
Custom Cable Assembly
For routing through conduit, cable trays, or concrete walls. ALSR195 (lower loss than RG58) or LMR400 low-loss coax in any length. SMA or N at each end. Specify length, connectors, and cable type at order.
Why installers specify D&G for Permaconn sites
Matched MIMO pairs
MIMO performance depends on physical antenna separation and matched impedance. We supply matched MIMO pairs with consistent 50Ω performance, tested before dispatch.
Custom cable runs
No standard cable fits every plant room. We build SMA-to-N assemblies in any length, any cable spec. ALSR195 (lower loss than RG58) for runs under 5 m, LMR400 for longer runs through conduit.
Same-day Penrith pickup
If you need it today, we can have it ready at 1 Harford Street, Penrith. Call ahead for same-day cable assemblies.
OEM supply chain
Our antenna components are the same as those used in ADT, Johnson Controls, and Wormald monitoring systems across Australia. Not a reseller — the actual manufacturer.
Also relevant: Alarm Panel 4G Antenna Guide · Custom Cable Assemblies
Browse Shop →— Get a Quote
Procurement
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Why quote through Xtend?
D&G Antennas — OEM supplier to ADT, JCI, Cardtronics, and Elsema. Direct to your project.
Direct to the Manufacturer
D&G Antennas makes the product. Your quote goes to the source — not a distributor or call centre.
200–500 Units Is Our Normal
Strategic pricing at 50+ units. Volume orders are our standard business — we won't blink at your quantity.
Custom Assemblies to Spec
Non-catalogue cable runs, frequency-tuned antennas, custom connector types. Quoted against your system drawings.
1-Day Response
We supply ADT, JCI, and Cardtronics — we understand what a procurement deadline means. Response within 1 business day.
50+ Units
Strategic discount applies automatically at 50 units per line item. Account pricing available for ongoing procurement.