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| + | ====== CW Filter Model FR4 ====== | ||
| + | {{fr-4.jpg?150|}} | ||
| + | ===== Description ===== | ||
| + | The FR4 filter is for use between receivers or transceivers, and high impedance headphones. It is a passive audio filter centered around 850 Hz. A switch is included to completely remove the filter from the headphone line for phone reception. | ||
| + | |||
| + | ===== Specifications ===== | ||
| + | ***Center Frequency:** 850 Hz | ||
| + | ***Bandwidth at 6 dB Down:** 400 Hz | ||
| + | ***Bandwidth at 60 dB Down:** 2.4 KHz | ||
| + | ***Input Impedance:** 2000 ohms | ||
| + | ***Output Impedance:** 2000 ohms | ||
| + | ***Insertion Loss:** Less than 3 dB | ||
| + | ***Size:** HWD 2-1/2" x 4-3/4" x 6" | ||
| + | ***Shipping Weight:** 1 lb 12 oz | ||
| + | ***Finish:** Baked enamel case, molded plastic side panels with wood grain inserts | ||
