Topband: Visalia Top Band Dinner

2017-01-31 Thread wb6rse1
The 2017 Top Band Dinner at the Visalia International DX Convention will be held on Friday, April 21, 2017 at the Marriott Hotel immediately adjacent to the Visalia Convention Center. Registration, program, menu and cost information can be found on the dinner’s website:

Re: Topband: tower vertical

2017-01-31 Thread Rob Atkinson
Bob, You didn't mention the model or manufacturer of your tower.The best installation involves a genuine tapered bottom section of the type made to accommodate a ceramic base insulator. Usually when you find one, you also get the mounting hardware and ball gap that accompanies it. You

Topband: tower vertical

2017-01-31 Thread StellarCAT
Hello Bob, When I’ve modeled a 160 vertical interior to an 80M 4 sq I find the vertical interacts terribly with the 4 sq. The ‘tower’ would need to be broken up in to 3 sections ... not a simple task... I know there are those that have done this but I suspect they’ve just put it up and taken

Re: Topband: tower vertical

2017-01-31 Thread Brian Pease
The base insulator is certainly the most effective way to detune, and the most efficient way to drive the tower, but it is nice to have the tower grounded and use shunt feed. You can detune the tower by turning the bottom section into a parallel-resonant trap during receive, probably using