01 · Connection
1 bidirectional connection
bnc
- Connection
- 1 bidirectional port
- Connector
- bnc
- Signal
- antenna
RF Antenna
Sennheiser A 1031-U Omnidirectional Antenna
The A 1031-U is Sennheiser's workhorse remote antenna: a passive omnidirectional blade that gets the receive point off the rack rear and up where it can see the stage. Its 450–960 MHz span covers every evolution wireless band Sennheiser ever shipped, so the same antenna serves G3, G4, and Digital 6000 racks without a band-match spreadsheet. Rated to 10 W of RF input, it also stands in as a transmit antenna on modest IEM rigs — one spare in the workbox covers a lot of failure modes.
Photos
Manufacturer product photography showing the hardware, controls, and physical form.
- Documented outputs
- 00 destination connections
- Documented inputs
- 0Based on documented inputs
- Rack space
- Outside rackPlan a shelf, tray, or stage position
- Power draw
- 0WVerified passive · no AC required
- Catalog estimate
- ~$219Use retailer rows for current price and stock
01 · What it does—and what that changes in your rig.
Product overview
Start with the payoff, then work through how it functions, where it fits, and the details that change a real build.
The payoff
RF Antenna decisions, organized around the whole rig.
The A 1031-U is Sennheiser's workhorse remote antenna: a passive omnidirectional blade that gets the receive point off the rack rear and up where it can see the stage. Its 450–960 MHz span covers every evolution wireless band Sennheiser ever shipped, so the same antenna serves G3, G4, and Digital 6000 racks without a band-match spreadsheet. Rated to 10 W of RFRadio Frequency — the wireless part of wireless. RF planning is why big rigs scan, coordinate, and combine antennas instead of hoping. input, it also stands in as a transmit antenna on modest IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. rigs — one spare in the workbox covers a lot of failure modes.
- Documented outputs
- 00 destination connections
- Documented inputs
- 0Based on documented inputs
- Rack space
- Outside rackPlan a shelf, tray, or stage position
02 · Know the whole path before you buy.
Signal path
Learn the route as a block diagram: source, product function, transport, and destination. Select any block to see what enters, what changes, and what leaves.
Interactive block diagramAuto-looping · hover, focus, or tap to hold a stage
Port-type signalProduct functionSystem boundary
Follow one signal from source to destination
01 · Connection · selectedEach block answers the same three questions: what arrives, what changes here, and what leaves.
03 · What this product asks of the rest of the system.
Compatibility
Treat connector names as the start of the check—not the answer. These are the boundaries that determine a complete working path.
Best fit · RF Antenna
Use it as rf antenna tracked outside rack rails; follow the manufacturer’s mounting and form-factor guidance.
Plan the companion path
Complete the path with upstream and downstream gear that matches connector, direction, signal type, protocol, and wiring standard.
Connector boundary
Documented connectors: bnc. Match connector, direction, and signal type—not shape alone.
04 · Every connector, grouped by job.
I/O ports
Switch the product view and the documented port inventory updates with it—hardware and data stay side by side.
Every connector, grouped by job.
Switch panels to keep the hardware view and the documented port list in sync.
| Port | Panel | Connector | Direction | Signal | Channels |
|---|---|---|---|---|---|
| Antenna (BNC) | rear | bnc | bidirectional | antenna | — |
Showing 1 of 1 documented physical ports.
05 · Compare the decision, not just the price.
Alternatives
The rows are organized around fit, power, I/O, and system role so a cheaper unit cannot hide a more expensive workflow.
| Compare |  | External unit |  |  |
|---|---|---|---|---|
| Fit | 📐 Outside rack | 📐 Outside rack | 📐 Outside rack | 📐 Outside rack |
| Power | ⚡ 0W | ⚡ 0W | ⚡ 0W | ⚡ Bus |
| Weight | ⚖️ 0.3 lb | ⚖️ 0.8 lb | ⚖️ 0.7 lb | ⚖️ 1.4 lb |
| I/O | 🔌 1 | 🔌 1 | 🔌 1 | 🔌 1 |
| Estimate | 💵 ~$219 | 💵 ~$280 | 💵 ~$399 | 💵 ~$1,099 |
| Deep dive | Current selection | Full comparison → | Full comparison → | Full comparison → |
06 · Resolve the questions that can change the purchase or build plan.
Planning questions
Short, source-backed answers surface rack fit, power, cabling, and connection details before they become surprises.
Where does the Sennheiser A 1031-U Omnidirectional Antenna live in a complete rig?
The catalog assigns it no rack units. Builder tracks it as non-rack gear; follow the manufacturer’s mounting, case, and form-factor guidance.
How much power does the Sennheiser A 1031-U Omnidirectional Antenna draw?
It is verified passive and requires no AC power.
What connections does the Sennheiser A 1031-U Omnidirectional Antenna have?
1 documented physical ports, including Antenna (BNC).
07 · See this gear inside a complete system plan.
Builder preview
Builder keeps non-rack gear in the same bill of materials, budget, dependency, and connection plan as the rack-mounted system around it.Open in Builder08 · Related gear, in the order you may need it.
Complete the system
External unit
RF Antenna
Sennheiser A 2003-UHF Directional Antenna
Outside rack · 1 ports · ~$280RF Antenna
Sennheiser ADP UHF Directional Antenna
Outside rack · 1 ports · ~$399RF Antenna
Sennheiser AD 3700 Active Directional Antenna
Outside rack · 1 ports · ~$1,099
RF Antenna
Shure UA860SWB Omnidirectional Antenna
Outside rack · 1 ports · ~$345
RF Antenna
Shure UA874 Active Directional Antenna
Outside rack · 1 ports · ~$450
RF Antenna