Collins R389 Low Frequency Receiver
The Collins R-389/URR is a highly regarded VLF (Very Low Frequency) receiver that was originally designed for military use. It covers a frequency range of 15 kHz to 1500 kHz and is known for its exceptional sensitivity, selectivity, and stability. The R-389 is a superheterodyne receiver with multiple frequency conversions, which allows it to achieve a high level of performance. It also features a motorized tuning mechanism, which makes it easy to operate.
The R-389 was produced in limited quantities, and it is now a highly sought-after collector’s item. It is still used by some radio amateurs and enthusiasts, and it is considered to be one of the finest VLF receivers ever made.
Here are some of the key specifications of the Collins R-389/URR:
- Frequency range: 15 kHz to 1500 kHz
- Sensitivity: 0.5 µV at 150 kHz
- Selectivity: 1 kHz at 150 kHz
- Stability: 1 part in 10^6 per hour
- Power requirements: 115 VAC, 50/60 Hz, 100 watts
The Collins R-389/URR is a truly remarkable receiver that continues to be admired by radio enthusiasts around the world.
