A band pass filter manufactured by CirQTel, model number FBT/2-300/7, is on offer. The center frequency is about 300 MHz while the 3-dB bandwidth is about 10.4 MHz (294 MHz to 305 MHz). The insertion loss at the center frequency is about 1.76 dB.

We measured the following bandwidths:
    3-dB bandwidth: 10.4 MHz (294 MHz to 305 MHz)
    6-dB bandwidth: 14.0 MHz (293 MHz to 307 MHz)
    10-dB bandwidth: 18.5 MHz (291 MHz to 309 MHz)
    20-dB bandwidth: 32.2 MHz (284 MHz to 316 MHz)
Measurements were made with cared-for, but ultimately uncalibrated, hobby-grade equipment so interpret the data presented here accordingly.

The unit has an F-SMA connector on each end. A data sheet was not available for this device.

This is a 50 Ohm device, tested in a 50 Ohm environment. It is used and in working condition, with signs of normal use and wear. The CirQTel FBT/2-300/7 unit, shown in the photos, is the only item included in this listing. The photos were taken on a 1 cm grid. I will combine multiple items together to reduce shipping costs and will mail one or two business days after receiving cleared payment.

Questions are welcome. Thanks for stopping by!

Notes:
SN6191 DC8602