Copyright 2013, Solexy USA, LLC
IOM00038-07
10178 International Blvd.
Cincinnati, Ohio 45246
Phone: 513-860-5465
Fax: 513-860-5464
www.solexy.net
AXF/AXN
Explosion Proof Antenna Coupler for use in
MSHA-approved Mining Machines or Systems
Installation & Operation Manual
OVERVIEW
The Solexy AXF/AXN explosion proof antenna coupler is an integrated protection device that facilitates radio
antenna installation in hazardous areas. The patented (7,057,577) AXF/AXN coupler features a barrier circuit
which blocks power voltage in the event of a radio transmitter/receiver fault. The circuit is encapsulated and
housed in an explosion-proof stainless steel body. By utilizing the coupler with a certified radio enclosure and
limiting your output power per local regulations, your radio system may be easily approved for hazardous area
use with most passive antennas.
The information in this manual is intended to assist with equipment design and system approval.
MSHA INTRINSIC SAFETY EVALUATION INFORMATION
MSHA File Number:
18-ISA080002-0
The AXF is accepted for use in an MSHA-approved mining machine or system. See applicable control drawing
(below) for Conditions of Use.
INSTALLATION
For proper installation, see the applicable control drawing (attached):
Drawing
Coupler Description
Model
DC00037
RP-SMA female antenna connector with 1-1/8-12 UNF thread
AXFSS
DC00040
N female antenna connector with 1-1/8-12 UNF thread
AXNSS
1. Feed the radio connection cable through the enclosure conduit entry. Do not attach to radio at this time.
2. Screw coupler into enclosure following local electrical code (US MSHA requires 5 thread engagement).
3. Attach radio connection to radio output or lightning surge suppressor.
4. Attach antenna or antenna cable to antenna connector.
SPECIFICATIONS
Ambient Temperature Range
-40
C to +85
C (subject to end product evaluation)
Maximum Fault Voltage
250 VDC, 250 VAC @ 60 Hz Max
Maximum Radio Power Output
2 Watts (subject to end product evaluation)
Maximum Capacitance
5.64 nF
Frequency Range
25 to 6000 MHz
Impedance 50
Ohms
Approximate Signal Attenuation (1)
Model AXF
Model AXN
425 MHz
0.3 dB
0.3 dB
920 MHz
0.6 dB
0.6 dB
2.4 GHz
1.3 dB
1.5 dB
5.8 GHz
4.8 dB
3.9 dB
(1) Values shown for 18” (457mm) coaxial cable and standard RP-SMA connectors (no adapter).
