DESCRIPTION
The Bird High Frequency J Series Plug-In Elements are 7/8 inch interchangeable directional RF elements covering the 950–1260 MHz frequency range. These elements are available in full-scale power ratings from 1 W through 5 kW, depending on frequency sub-band.
The J Series is engineered for higher-frequency UHF and lower microwave applications including cellular infrastructure, broadcast links, trunked systems, and RF service environments operating above 900 MHz.
Two primary calibrated frequency variants are available:
-
J-950 (approximately 950–1050 MHz region)
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J-1100 (approximately 1100–1260 MHz region)
These elements are designed for use with Bird 43, 4431, and compatible wattmeters in 50 ohm transmission systems. Forward or reflected power measurement is determined by installation orientation within the wattmeter line section.
Each unit is a passive precision-calibrated element built to Bird’s plug-in architecture, ensuring mechanical durability, repeatable measurement accuracy, and stable performance at higher operating frequencies.
J-950 Series
| Model | Frequency Range | Full Scale Power | Availability |
|---|---|---|---|
| 1J-950 | 950–1050 MHz | 1 W | Enquiry Only |
| 2.5J-950 | 950–1050 MHz | 2.5 W | Enquiry Only |
| 5J-950 | 950–1050 MHz | 5 W | Enquiry Only |
| 10J-950 | 950–1050 MHz | 10 W | Enquiry Only |
| 25J-950 | 950–1050 MHz | 25 W | Enquiry Only |
| 50J-950 | 950–1050 MHz | 50 W | Enquiry Only |
| 100J-950 | 950–1050 MHz | 100 W | Enquiry Only |
| 250J-950 | 950–1050 MHz | 250 W | Enquiry Only |
| 500J-950 | 950–1050 MHz | 500 W | Enquiry Only |
| 1000J-950 | 950–1050 MHz | 1 kW | Enquiry Only |
| 2500J-950 | 950–1050 MHz | 2.5 kW | Enquiry Only |
| 5000J-950 | 950–1050 MHz | 5 kW | Enquiry Only |
J-1100 Series
| Model | Frequency Range | Full Scale Power | Availability |
|---|---|---|---|
| 1J-1100 | 1100–1260 MHz | 1 W | Enquiry Only |
| 2.5J-1100 | 1100–1260 MHz | 2.5 W | Enquiry Only |
| 5J-1100 | 1100–1260 MHz | 5 W | Enquiry Only |
| 10J-1100 | 1100–1260 MHz | 10 W | Enquiry Only |
| 25J-1100 | 1100–1260 MHz | 25 W | Enquiry Only |
| 50J-1100 | 1100–1260 MHz | 50 W | Enquiry Only |
| 100J-1100 | 1100–1260 MHz | 100 W | Enquiry Only |
| 250J-1100 | 1100–1260 MHz | 250 W | Enquiry Only |
| 500J-1100 | 1100–1260 MHz | 500 W | Enquiry Only |
| 1000J-1100 | 1100–1260 MHz | 1 kW | Enquiry Only |
| 2500J-1100 | 1100–1260 MHz | 2.5 kW | Enquiry Only |
| 5000J-1100 | 1100–1260 MHz | 5 kW | Enquiry Only |