We offer a large product line of high power air cooled coil loads. This design employs the fundemental loss of circular waveguide to convert RF energy into heat within the minimum physical shape.
| Frequency GHz | Waveguide | Ref. | Power handling range |
| 7.05 - 10.0 | WR112 | 15-HC-9049 | 1 kW to 10 kW |
| 8.20 - 12.4 | WR90 | 16-HC-9050 | 0.9 kW to 8 kW |
| 10.0 - 15.0 | WR75 | 17-HC-9051 | 0.8 kW to 6 kW |
| 12.4 - 18.0 | WR62 | 18-HC-9052 | 0.8 kW to 4 kW |
| 18.0 - 26.5 | WR42 | 20-HC-9053 | 0.7 kW to 2 kW |
| 21.7 - 33.0 | WR34 | 21-HC-9054 | 0.6 kW to 1 kW |
| 26.5 - 40.0 | WR28 | 22-HC-9055 | 0.5 kW to 1 kW |