Rocky Mountain Ham Radio has built several communications trailers for various uses. Our first was built in 2006 originally for use as our mobile contesting support vehicle allowing us to easily set up for VHF contesting. It was sold in 2010 to the Wyoming Office of Homeland Security as their Amateur Radio Support Unit and is in active use today.
Our second trailer was built in 2011, exclusively for the Salt Lake City Veterans Administration allowing them to have a platform where their local hams can operate and manage any incident. It was a purely custom design and installation based on the VA’s requirements.
You can see the photos of all of these units are online in our gallery and I encourage you to look at them and learn from them.
Our third attempt at building a communications trailer was to replace the trailer sold to the Wyoming Office of Homeland Security. It’s our current platform and has been built for multiple uses.
Trailer Design Targets:
- Maximum usable interior space with good headroom
- Ease of towing and minimum traveling windload
- Minimum AF and RF interference
- Multiple operating spaces separated by doors
- Support equipment housed in separate space in the front
- Fold down tailgate for loading of gear
- External power (AC & DC,) telco, ethernet, and television connections
- Plenty of cabinet storage space with solid door locks
- 4 Standalone Desktop Computer Stations
- 2 Television monitors capable of split screen with PC and Satellite TV with King Dome satellite
- Internal ethernet network for a seamless experience
- Network printing and scanning
- 500A 12V battery plant with 125A smart charging system and monitoring system
- MagnaSine True Sine Wave 3kW inverter with automatic microsecond transfer switch
- Full DC distribution system with 80A 12V distributions at each operating station
- Full antenna patch system with bulkhead cabling to each operating position
- 1x Icom IC-7000 and SCS PTC-IIusb Pactor III modem
- 2x Motorola MotoTRBO 1-VHF & 1-UHF
- 1 Icom ID-1 1200MHz D-STAR/Analog Radio
- 1 Icom ID-800 D-STAR/Analog Dual Band Radio
- 1 Kenwood TM-D700
- 1 Icom A-110 Air-to-Ground radio with licensed multicom station
- 1 Tait 700/800 Colorado State CNCC radio
- MotoTRBO XPR8300 UHF Repeater for hotspot capability on the Colorado DMR network
Trailer Networking Capability:
- HP 10/100/1000 48-port switch routed to 30 locations within and outside of the trailer
- Cradlepoint MBR1400 cellular to ethernet bridge for automatic failover connectivity switching Terrestrial/Satellite and 3 broadband modems
- Viasat Exede Ka band satellite internet terminal providing high speed internet while off-grid.
- One HP DL360G6 Servers with Xen Server running BPQ node and internal PBX phone system
- Two Polycom IP331 VoIP telephones with dialtone and the ability to dial anywhere
- Cache of 12 Polycom IP331 telephones for rapid deployment in any situation
- Buffalo Terastation 1TB Network Attached Storage
- 2x 1.5 Ton Ducted HVAC units on the roof (Heating and Air Conditioning)
- Full Wall and Ceiling insulation
- All lighting in the trailer is LED with dimmers for night use