Product

一、Business

"Bright Aviation" provides product supply, after-sales service, technical consultation, spare parts support and other services.

二、Overview

1. Single cavity filter is used with VHF radio.

2. The single cavity filter has small path insertion loss and high out of band rejection. It is used to improve the selectivity of VHF Receiver and the isolation between multiple transmitting stations, and effectively suppress out of band noise and intermodulation interference.

3. The single cavity filter is a selective band-pass filter. For the working frequency f₀ set by the cavity filter, the coupling pass is obtained with the insertion loss ≤ -2dB. For RF signal with operating frequency f₀ ± 500KHz, the insertion loss ≤ -15dB.

三、Characteristic

1. Frequency Adjustable Range: 118-142 MHz.

2. Input and Output Impedance: 50 ohms.

3. Input Power: ≤ 200W.

4. Number of Channels: 1.

5. Insertion Loss: ≤ -2 dB（adjustable）.

6. Default Debugging Frequency: 127.5MHz.

7. Reverse Loss: ≤-14dB, typical value ≤-20dB.

8. Frequency Selectivity: ≤-15dB (carrier frequency ± 500KHz).

9. Frequency Tuning Mode: Rotary Knob, Telescopic Movement.

10. Connector: N Female.

11. Size: 21 (L) * 21 (W) * 67 (D) cm.

12. Weight: 7kg.

四、Appearance

五、Measurement Analysis

The network analyzer (N9913A) measures the low, medium and high operating frequencies, insertion loss and pictures of the single cavity filter, as shown in the table below.