MBM48/70 Phasing Harness

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MBM48/70 Phasing Harness

Postby G4OHV » Mon Oct 17, 2011 8:21 pm

Hi

I have up a pair of Jaybeam MBM48/70 multi-beams which I intend to put up for 70cm DATV, but have no tech info on these antennae.

Anyone any idea of the coax lenght's required to make a phasing harness

Regards

Col
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Re: MBM48/70 Phasing Harness

Postby gm1mfn » Tue Oct 18, 2011 1:43 pm

There's a couple of calculators here and here.
Doppler effect: The tendency of stupid ideas to seem smarter when they come at you rapidly.
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Re: MBM48/70 Phasing Harness

Postby G4OHV » Tue Oct 18, 2011 3:25 pm

Thanks for the info

Regards

Col
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Re: MBM48/70 Phasing Harness

Postby G4OCO » Sun Oct 30, 2011 8:34 pm

Colin

There is another way, using a power splitter. I use one here and brought mine on E-Bay from a supplier in Greece. By using a power splitter, you only need to know stacking distance and equal lengths of 50 ohm coax, easier than making up a phasing harness.

P5


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Re: MBM48/70 Phasing Harness

Postby G4OHV » Sun Oct 30, 2011 10:57 pm

I thought that was all I needed to know for a phasing harness, the stacking distance, length of coax's, (75ohm), to the tee socket

regards

Col
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