[TowerTalk] Wire size for 800 meter long wire

[K4SAV]

I was enjoying all this brain storming to see if anyone could figure out 
how to string this cable, but I was also wondering how long it would 
take before someone asked how this thing was going to perform. 

Actually it seems to be a multi-lobe, low gain, high angle radiator on 
the low bands.  It does have some lobes that have high gain on some of 
the higher bands like 20 meters, but the beam width is so small as to 
not be useful.  It's not even useful as a "beverage" because of the good 
ground. Now the next big challenge for the group is to figure out how to 
make it useful.

Jerry, K4SAV


Michael Tope wrote:

>Barry,
>
>Have you thought at all about how you are going to feed
>the long wire? Very long end-fed wires get very directive
>off the ends. We had a 600 footer at Ohio State (up ~100
>ft). It ran east-west and worked great toward Africa on 75
>meters (it was fed from the West end) - a guaranteed pileup
>buster to West Africa on 75 meter SSB. On 40 meters it 
>didn't seem to work any better than a high dipole. The 2 
>element quad at 110' feet ran circles around it on 20 meters. 
>Given the engineering challenge of spanning a 1/2 mile inlet, 
>have you considered other alternatives. I would certainly 
>model it before going to that much trouble. 
>
>How about a sloping wire from one bluff down into the inlet 
>at about 45 degrees using a heavy anchor to hold the bottom 
>end in place? If your primary interest is shooting towards the 
>saltwater, I would want to be vertically polarized. 
>
>73 de Mike, W4EF............................
>
>
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