The Ebyte TX915/TX900 series is a 20-model family of 915MHz Sub-1GHz antennas for North-American ISM LoRa and private telemetry networks, covering 260~900mm N-J/N-K fiberglass radome models from 3dBi to 13dBi gain (up to 100W), FPC and PCB built-in antennas with IPEX-1 feedlines from 30×9mm to 95×14mm, SMA-J bendable and soft rubber whips from 52mm to 210mm, IPEX-1 cabinet whips, and an SMA-J magnetic suction antenna with 1m RG174 cable, all 50Ω omnidirectional.
Key Features & Advantages
- Complete 915MHz ISM Accessory Ladder: One listing covers the full RF accessory chain — terminal built-in antennas (FPC/PCB with IPEX-1), device whips (SMA-J), cabinet antennas and mast-mounted fiberglass bases (N-J/N-K), simplifying BOM consolidation for LoRa gateway, metering and DTU OEMs.
- Fiberglass Radomes for 24/7 Outdoor Base Stations: BLG models enclose multi-element collinear arrays in a sealed UV-resistant FRP radome (Φ20mm or Φ52mm), waterproof, windproof and salt-spray resistant, rated -40°C to +85°C for field base stations, repeaters and SCADA links.
- Gain 2dBi to 13dBi: From 2dBi short whips for handheld/constrained devices to 13dBi 900mm TX900-BLG-90P for long-haul point-to-multipoint coverage — select exactly the link-budget you need and control vertical beam-width accordingly.
- Built-in FPC/PCB with IPEX-1 Feedlines: Adhesive-backed FPC and rigid PCB antennas with 100~140mm RF1.13/RG coax feedlines and snap-on IPEX-1 (U.FL) connectors integrate directly into module PCB sockets; 3M adhesive or screw/standoff mounting inside enclosures.
- Standard Industrial Connectors: Heavy-duty N-J (N-Male) / N-K (N-Female) on fiberglass, SMA-J (male thread, male pin) on whips and suction mount, IPEX-1 on module antennas — all 50Ω impedance matched to Ebyte radio modules.
Core Specifications
Specifications compiled from the official Ebyte per-model detail spec tables; where a marketing overview and the detailed spec table differ, the detailed spec table value is shown.
| Model | Type | Frequency Range | Connector | Gain | VSWR | Size / Cable | Power | Operating Temp |
|---|---|---|---|---|---|---|---|---|
| TX900-BLG-90P | Fiberglass (base) | 860~940MHz (868/915 dual) | N-K (N-Female) | 13dBi | ≤1.5 | 900mm, Φ52mm | 100W | -40°C~+85°C |
| TX915-BLG-26 | Fiberglass | 860~940MHz (ctr 915) | N-J (N-Male) | 3.0dBi | ≤2.0 | 260mm, Φ20mm | 100W | -40°C~+85°C |
| TX915-BLG-40 | Fiberglass | 880~955MHz (ctr 915) | N-J (N-Male) | 5.5dBi | ≤1.5 | 400mm, Φ20mm | 50W | -40°C~+80°C |
| TX915-BLG-85 | Fiberglass | 880~950MHz (ctr 915) | N-J (N-Male) | 9dBi | ≤1.5 | 850mm, Φ20mm | 50W | -40°C~+85°C |
| TX915-FPC-3009 | FPC built-in | 915MHz | IPEX-1 | 2.5dBi | ≤1.5 | 30×9mm, 100mm cable | [to be confirmed] | [to be confirmed] |
| TX915-FPC-4510 | FPC flexible w/ 3M tape | 868~930MHz (ctr 915) | IPEX-1 (IPX-1) | 3dBi | ≤1.5 | 45×10mm, 90mm RF1.13 | 2W | -30°C~+75°C |
| TX915-FPC-7020 | FPC built-in | 900~940MHz | IPEX-1 | 3.5dBi | ≤2.0 | 70×20mm, 121mm cable | [to be confirmed] | [to be confirmed] |
| TX915-FPC-8521 | FPC built-in | 860~940MHz | IPEX-1 | 4dBi | ≤1.5 | 85×21mm, 140mm cable | [to be confirmed] | [to be confirmed] |
| TX915-PCB-D42 | PCB built-in (round) | 910~920MHz | IPEX-1 | 3dBi | ≤2.0 | Φ42mm, 118mm cable | [to be confirmed] | [to be confirmed] |
| TX915-PCB-7505 | PCB built-in | 860~940MHz | IPEX-1 | 3dBi | ≤1.5 | 75×5mm, 115mm cable | [to be confirmed] | [to be confirmed] |
| TX915-PCB-9514 | PCB built-in | 860~940MHz | IPEX-1 | 3dBi | ≤2.0 | 95×14mm, 120mm cable | [to be confirmed] | [to be confirmed] |
| TX915-JK-11B | Bendable whip (EOL*) | 895~935MHz | SMA-J | 2.5dBi | ≤1.5 | 110mm, TPEE, 8g | 20W | -30°C~+75°C |
| TX915-JKD-20 | Bendable whip | 915MHz nominal | SMA-J | 3.5dBi | ≤2.5 | 200mm | [to be confirmed] | [to be confirmed] |
| TX915-JKS-20 | Bendable whip | 895~935MHz | SMA-J | 3dBi | ≤1.5 | 195mm, TPEE, 17g | 20W | -30°C~+75°C |
| TX915-JKS-IPX20 | Bendable whip | 915MHz nominal | IPEX-1 (200mm cable) | 3dBi | ≤1.5 | 197mm, 200mm cable | [to be confirmed] | [to be confirmed] |
| TX915-JZ-5 | Short straight whip | 895~935MHz | SMA-J | 2dBi | ≤4.0 | 52mm, TPEE, 6g | 10W | -30°C~+75°C |
| TX915-JZLW-15 | Cabinet whip | 868~955MHz (ctr 915) | IPEX-1 (150mm cable) | 3dBi | ≤1.5 | 165mm, 20g | [to be confirmed] | [to be confirmed] |
| TX915-JZR-6 | Soft flexible whip | 895~935MHz | SMA-J | 2.5dBi | ≤2 | 60mm±2mm, 8g | [to be confirmed] | [to be confirmed] |
| TX915-XPL-100 | Magnetic suction mount | 915MHz nominal | SMA-J (1m RG174) | 3.5dBi | ≤1.5 | ≈250mm radome | [to be confirmed] | [to be confirmed] |
| TX915-TH-2 | 915MHz antenna | [to be confirmed] | [to be confirmed] | [to be confirmed] | [to be confirmed] | [to be confirmed] | [to be confirmed] | [to be confirmed] |
Product Selection Guide
Selection Notice: 915MHz models target the US/Canada ISM band — verify your target deployment region and local regulations (FCC part 15 or equivalent) before ordering. Match the connector first (N-J/N-K for base radios, SMA-J for terminals, IPEX-1 for module PCB sockets), then pick gain by link budget; note TX915-JK-11B is discontinued at the factory and produced on batch request only, so lead time applies.
| Model (SKU) | Connector | Gain | Installation | Recommended For |
|---|---|---|---|---|
| TX900-BLG-90P | N-K | 13dBi | Mast, outdoor | Long-haul 868/915 dual-band base stations & repeaters |
| TX915-BLG-26/40/85 | N-J | 3 / 5.5 / 9dBi | Mast / bracket, outdoor | Compact base → mid-range gateway → high-gain 915MHz DTU links |
| TX915-FPC-3009/4510/7020/8521 | IPEX-1 | 2.5~4dBi | Inside enclosure (adhesive/tape) | Smart meters, trackers, sensors, gateways built on 915MHz modules |
| TX915-PCB-D42/7505/9514 | IPEX-1 | 3dBi | Inside enclosure (rigid PCB) | Slim routers & devices needing rigid round/strip built-in antenna |
| TX915-JK-11B / JKD-20 / JKS-20 / JZ-5 / JZR-6 | SMA-J | 2~3.5dBi | Screw to device SMA port | Terminals, routers, DTU radios, handheld equipment |
| TX915-JKS-IPX20 / JZLW-15 | IPEX-1 | 3dBi | Snap to PCB pad | Module-based products & equipment cabinets |
| TX915-XPL-100 | SMA-J + 1m cable | 3.5dBi | Magnetic base on metal | Vehicles, temporary field deployment, test benches |
| TX915-TH-2 | Parameters to be confirmed — contact us for the current datasheet before ordering. | |||
Industrial Installation & Wiring
1. Fiberglass models (N-J / N-K): Hand-tighten the N connector on the radio's N port, torque on the hex body only, and seal outdoor joints with self-amalgamating tape plus PVC over-tape. Mount vertically on a mast with at least 30~50cm clearance from metal structures; add a grounded inline lightning surge protector for tower installations.
2. SMA-J whips (JK-11B / JKD-20 / JKS-20 / JZ-5 / JZR-6 / XPL-100): Finger-tight plus a light quarter turn onto SMA-K (female thread, female jack) ports; over-torquing can crack the SMA island on small modules. Keep the whip vertical for the specified omnidirectional pattern.
3. IPEX-1 built-in antennas (FPC / PCB / JKS-IPX20 / JZLW-15 / TH-2): Align the IPEX-1 (U.FL) plug over the PCB RF pad and press straight down until it clicks — never slide or pry. Peel the 3M adhesive liner and bond the FPC face flat to a clean, non-metallic inner surface, keeping the feedline away from metal brackets, battery packs and the module's own PA output.
4. Built-in antenna clearance: Maintain at least 15mm air gap between FPC/PCB antennas and metal shells or shielding; metallic contact detunes the 915MHz resonance and raises VSWR significantly.
Practical Application Scenarios
1. North-American 915MHz LoRa Gateways & Smart Metering
US ISM LoRa operates at 915MHz; pair BLG-26/40/85 or the 13dBi BLG-90P with 915MHz gateways to cover AMR/AMI utility metering clusters, campus sensors and agricultural telemetry nodes.
2. Built-in Antenna Integration for OEM Devices
FPC/PCB IPEX-1 antennas embed inside smart meters, asset trackers, USB dongles and module-based terminals where external antennas are not allowed — the adhesive FPC conforms to curved plastic enclosures.
3. Industrial Wireless Data-Transfer Radios (915MHz DTU)
915MHz FHSS DTUs controlling pumps, gates and oilfield sensors rely on sealed fiberglass radomes for 24/7 outdoor reliability in desert heat, salt air and ice storms.
4. Fleet, Cabinet & Field Test Deployment
The XPL-100 magnetic suction antenna mounts on vehicle roofs or equipment cabinets with 1m reach; JZLW-15 snaps onto IPEX pads inside control cabinets for fleet, logistics and site-engineering radios.
FAQ Section
Q1: What is the difference between the TX900 and TX915 antennas in this family?
TX900-BLG-90P is a wide/dual-band 868MHz+915MHz base antenna (860~940MHz, 13dBi, N-K female connector, Φ52mm 900mm radome). TX915 models are tuned to the 915MHz band (typical working range 880~955MHz depending on model) for US ISM deployments, from built-in IPEX-1 antennas to N-J fiberglass masts.
Q2: Should I choose FPC, PCB or a rubber whip for my device?
Choose FPC (adhesive, flexible) for curved plastic enclosures, rigid PCB types (D42 round / strip) when you need a stable mechanical shape near a mounting hole, and SMA-J whips when the antenna is user-replaceable outside the box. All connect to standard module RF pads (IPEX-1) or SMA-K jacks.
Q3: Why does higher-gain fiberglass sometimes not increase my range?
Higher gain compresses the vertical beam. If the far-end device uses a low-gain omnidirectional whip near the ground, or the antenna is mounted horizontally/obstructed, the compressed lobe misses the receiver. Match gain to link geometry and keep fiberglass antennas strictly vertical and unobstructed.
Q4: The N-J connector on my radio port does not match — what can I do?
BLG models ship with N-J (N-Male). For SMA devices use an N-female to SMA-pigtail adapter; for terminal equipment with N-K ports choose TX900-BLG-90P (N-Female). Keep adapter cable loss low (≤2dB) at 915MHz to preserve link budget.
