144-146 MHz Bandpass filters for EME PF8-2HAM-100, PF8-2HAM-250, PF8-3HAM-300


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PF8-2HAM-100, PF8-2HAM-250PF8-3HAM-300

Electrical specifications

Model PF8-2HAM-100 PF8-2HAM-250 PF8-3HAM-300
Operating frequency band, MHz 144-146 144-146 144-146
Insertion loss (adjustable), dB 1-5 1-5 1,5-6
Max. frequency bandwidth, kHz 100 250 300
Impedance, Ohm 50 50 50
Attenuation see fig. see fig. see fig.
VSWR, not more than 1,2 1,2 1,2
Input power, not more, W not more than 300
Temperature range, °C from -30 to +60
Cavity electrical length 1/4λ 1/4λ 1/4λ

Mechanical specifications

Model PF8-2HAM-100 PF8-2HAM-250 PF8-3HAM-300
Diameter, mm (ins.) 206 (8")
Weight, kg 7.2 7.2 10.5
Connector N-female N-female N-female
Mount to 19-inch rack present
Dimensions (LxWxH), mm 480x210x800 480x210x800 480x420x800

Usually in conditions of large megacities and even in rural territories if there are near established base station of land mobile radio noises level are very high. At communications with reflection from the Moon, when power of a signal are very weak a important aspect is a signal to noise ratio. This we can achieve only then if use high selective filters. These filters made by coaxial cavities. We bring to your attention filters, assembled from 5,8 and 10 inches cavities.

Typical selectivity characteristics PF8-2HAM-100
Span 1 MHzSpan 10 MHz

Typical selectivity characteristics PF8-2HAM-250
Span 1 MHzSpan 20 MHz

Typical selectivity characteristics PF8-3HAM-300
Span 1 MHzSpan 20 MHz

The information provided on this page is not an official offer.
To verify actual parameters contact the sales department before ordering.