"Richard" wrote in message
...

So, is anyone out there interested in providing a service to all marine
band DXers/eavesdroppers of designing and producing *full
constructional notes* on a range of marine antennas, and then
putting the designs up on a website.


This would probably be the start of your 6 element design:

Parasitic elements 4mm dia rod , DE 8mm or 5/16" tube.

------------------|------------------- R 37.106"
| ^ 0.000"
------------------|------------------ DE 36.772"
| ^ 9.275"
------------------|------------------ D1 34.154"
| ^ 12.250"
------------------|------------------ D2 33.34"
| ^ 23.800"
------------------|------------------ D3 33.34"
| ^ 34.213"
------------------|------------------ D4 32.58"
^ 47.211"


IOW:
X Y Z Dia"

REF End 1 0.000 -18.553 0.000 0.187
End2 0.000 18.553 0.000


DE End1 9.275 -18.368 0.000 0.312
End2 9.275 18.368 0.000


DIR1 End1 12.250 -17.077 0.000 0.187
End2 12.250 17.077 0.000


DIR2 End1 23.800 -16.672 0.000 0.187
End2 23.800 16.672 0.000


DIR3 End1 34.213 -16.672 0.000 0.187
End2 34.213 16.672 0.000


DIR4 End1 47.211 -16.229 0.000 0.187
End2 47.211 16.229 0.000


Boom 15mm square, 50" long.

Parasitic elements slotted through boom with nylon rivets system.

DE using commercial dipole center peice.

DE hertz dipole with some kind of balun arrangement.

Potential problem?: Parasitics slot through boom because they are held in
place (say) by the nylon rivets system, DE will *not* pass through boom but
above it. Will that make a difference?

As you see I have some dimensions given me, but I have no skill to take
these dimensions (assumimng I stick with them) as a starting point and
produce an actual constructional design.