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Author Topic: 40 meter driven array  (Read 9257 times)
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« on: October 23, 2005, 11:18:54 AM »

I was chatting with Tom K3MRG and he directed me to an outstanding article covering driven arrays.

This may be the basis for scaling to 80 meters in the back 40.

Brent W1IA

Run What Ya Brung!
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"Let's go kayaking, Tommy!" - Yaz

« Reply #1 on: October 23, 2005, 11:48:15 AM »

Interesting, Brent -

That system is exactly what G/INR is doing on 75M with the exception of the last piece of double matching coax to go from 25 to 50 ohms.

I like the suggestion of making the elements 1.4% shorter to compenmsate for mutual coupling. Never saw that suggestion before.

This is a great system which is all driven - perfect if it is going to be less than 3/8 wave above ground for a given band.

Hope you try it for the DX window, OM. 


Use an "AM Courtesy Filter" to limit transmit audio bandwidth  +-4.5 KHz, +-6.0 KHz or +-8.0 KHz when needed.  Easily done in DSP.

Wise Words : "I'm as old as I've ever been... and I'm as young as I'll ever be."

There's nothing like an old dog.
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