Re: Topband: Homebrew capacitors

On 09/29/2013 07:42 PM, Jim GM wrote: Could have saved more money with a Piece of RF-9913 or RG8 coax cable about 25pF per foot plenty voltage rating. Only thing can some one please help me on this, do I connect the center conductor on one end of the cable and use the shield on the other en

Re: Topband: Homebrew capacitors

Hi Jim, When I used it I connected the center conductor at one end and the braid at the other end. The bit that I used for the small coupling capacitance was not very long. Even the short length I used kept the output of one circuit further away from the input of the other circuit. Some ante

Re: Topband: Homebrew capacitors

Could have saved more money with a Piece of RF-9913 or RG8 coax cable about 25pF per foot plenty voltage rating. Only thing can some one please help me on this, do I connect the center conductor on one end of the cable and use the shield on the other end? Or just use the center conductor and shi

Topband: 5/8 wavelength vertical is mo betta than shorter versions??

> Concerning your real experience, how did you measure the elevation angles and pattern beam width? Peter, We did not measure any angles, I was barely getting started on 160m at the time, and was more interested in putting up a good antenna for the Contest. The radiation pattern information comes

Re: Topband: 5/8 wavelength vertical is mo bettathan shorterversions??

I would think a 5/8 would be good for the various 160 contests where a lot of contacts are short distances and the extended groundwave plus some power at 40 degrees could be useful. Wth 3 antennas, a 1/4 wave, a 5/8 or 1/2 wave and a horizontal cloud warmer or for DX ducting, would cover all bas

Topband: Homebrew capacitors

I'm working on a project that will require 16 variable high-voltage transmitting capacitors with a maximum value of 200pF. I think it's worth reminding ourselves that a coaxial capacitor can be made cheaply using materials that are quite readily available. For the two "plates," I used 0.75-in OD al

Re: Topband: 5/8 wavelength vertical is mo betta than shorter versions??

Hi Niko, Concerning your real experience, how did you measure the elevation angles and pattern beam width? 73 Peter -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Niko Cimbur Sent: Samstag, 28. September 2013 19:46 To: topband@contesting.com Subject