[MLB-WIRELESS] Antenna Gain Testing?

[Jason Hecker]

I have been meaning to look into making a slotted coax standing wave 
measurerthingamo with movable probes to measure VSWR.  I have some damned 
big and stiff LMR500 which would suit if a router but was run down the 
length of it to make a slot.

Plug in the tunable (hopefully) 2.4GHz source at one end, your antenna at 
the other and with a simple diode rectifier attached to the probes and a 
multimeter, you can see where the peaks and troughs are relative to each 
other inside the coax and then with some jiggery pokery maths you can get a 
very good VSWR measurement.

No need for expensive 2 port analysers then.  Do it the way Marconi did.

What say you, Tony?


At 10:27 AM 7/06/2002 +1000, you wrote:
>Hrmm, perhaps this is one thing the MW membership fees could contribute
>towards?  Some radio clubs loan gear to members (don't know of any clubs
>with a 2.4 GHz SWR bridge though), so I see no reason why MW can't either.


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