144 – 146 MHz VLNA with Band-pass Filter

129,00 

2 Meter Band-Pass Filter with Very Low Noise Preamplifier.

Device contains High Selectivity, High Q, Low Loss Bandpass Filter with PGA-103+ Preamplifier.
This 144 – 146 MHz Band-pass filter will be perfect to suppress out of band signals

 

144 – 146 MHz band-pass filter and amplifier.

144 MHz Low Loss BandPass Filter with VLNA

This combination consists of two devices:

Achieves better results than two separate components. Lower NF about 0.05 to 0.1 dB. Thanks to two less connectors.

 

Measured results with HP8753ES network analyzer full two port calibrated:

Frequency: Attenuation:
1.82 MHz – 75 dB
3.8 MHz – 82 dB
7.1 MHz – 80 dB
14.15 MHz – 67 dB
21.2 MHz – 62 dB
28.4 MHz – 55 dB
50.1 MHz – 40 dB
54 MHz – 37 dB
70 MHz – 29 dB
70.5 MHz – 28.5 dB
FM: 88 MHz – 18.5 dB
FM: 98 MHz – 12.3 dB
FM: 108 MHz – 5.3 dB
144 MHz + 25 dB NF = 0.7 dB (Calculated bandpass filter insertion loss)
144.1 MHz + 25 dB NF = 0.7 dB (Calculated band pass filter insertion loss)
146 MHz + 25.1 dB NF = 0.7 dB (Calculated band pass filter insertion loss)
288.2 MHz – 34 dB
296 MHz – 36.5 dB
432.1 MHz – 46 dB
440 MHz – 44 dB
IP3out > 37 dBm
Power consumption:  +10-15 V / 100 mA

 

These excellent results were achieved by careful selection of components and design.

Thanks to input filtering this preamplifier and band pass filter combination are much more immune to interference from strong out-of-band signals. Compared to output filtering.

2m Low Loss bpf with VLNA amplifier outdoor

Measured Return Loss (S11) and Insertion Loss (S21) of 144 – 146 MHz Band-Pass Filter and Amplifier:

Preamplifier Band-Pass Filter 2Meter measurement data
1. HF attenuation measurement:
144MHz 2Meter BPF HF attenuation measurement
2. Attenuation measurement from 50 MHz to 70.5 MHz.
6m and 4m attenuation for 2meter Band-Pass Filter With PGA103+
3. FM attenuation (88-108 MHz) for 144 MHz Band Pass Filter With Pre-Amplifier.
PGA103+ VLNA with BandPass-Filter FM Attenuation
4. Measured Harmonic and UHF attenuation.
Super Low Noise Pre-amplifier with BPF Second and third harmonic attenuation
Band pass filter enclosed in strong 0.8 mm sheet brass box. Strong mechanics will ensure stability and longevity.
Version with relays is here.
 
Link to 144 MHz band-pass filter and pre-amplifier, but made for outdoor use. It is inside plastic box (meets IP63 standard):    Amplifier & Band-Pass Filter inside Plastic Box for Outdoor Use
 
Link to all band-passers:    Band-Pass Filers
 
Link to 2 meter Antennas:    2 Meter High Gain Low Noise Antennas for 144 MHz

Additional information

Weight 0.50 kg