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The PS-70CM polarity switch kit is designed to work with any M2 circular polarized antenna. It allow instantaneous selection of right or left hand circularity. Originally designed for NASA for many of their 100 to 500 MHz satellite and space craft applications, the PS-70CM is now used by many amateur VHF enthusiasts to performance flexibility to both terrestrial and satellite applications.
The heart of the unit is a small, low loss coaxial switch carefully designed into the driven element block. Only one driven element block PS-70CM is required to achieve full right hand and left hand selection. There are no frequency sensitive elements in the block assembly so the PS-70CM or its UHF equivalent can be used on most M2 CP antenna from 100 to 500 MHz. The PS-70CM can handle 250W of continuous RF transmission power. Losses are less than 0.2 dB.
Installation is easy and involves only the removal of one of the original Driven Element assemblies and then mounting the PS-70CM in its place.
Frequency Range: 300 to 500 MHz
Isolation, 2M / 440: 50 dB / 40dB
Feed Impedance: 50 Ohms Unbalanced
VSWR: 1.2:1 or better
Connectors: “F” Females
Ins. Loss, 2M / 440: 0.1 / 0.2 dB
Switch Time, In / Out: 20ms / 15ms
Power Handling 2M/440: 200W/150W
DC power req.: 12 VDC @ 80mA
Block size / Rod Dia.: 2″ X 2″ X 1-1/4″ / 1/4″
Maximum Element Length: 16″
Operating Temp range: -50°c to 150°c
Weight / Ship Wt.: 2.0 Lbs. / 4 Lbs.
|Dimensions||12 x 9 x 2 in|