Thursday, 7 February 2013

BYRON 80M ANTENNA

I guess this won’t be read by anyone but I have to make these notes on an experimental antenna I have made.
If I don’t all the paperwork will be lost and this idea may be lost forever.
It may have been made before information may be on the Internet about it but I have not found it yet.
After building an Extended Double Zepp for 15m of good quality wire and the feeder continuous from the top elements, it worked even better on 40m so that’s the band I am now using it for.
I am not an expert on antenna theory or Smith Charts ext., but I thought there must be something that makes it better than dipole cut for 40m.
It’s obvious that 7 MHz is x 3 for 21 MHz so that’s where I started, I wanted an antenna for 80.
I wanted a frequency of 3.740 so I times that by 3 and came up with 11.220 then I divided that into 598.5 and came up with 53.44 feet per element.
I built the antenna and put it up but when I checked the resonant frequency of that with an analyser on the open feeder it was 4.256 MHz.
With the feeder at 3.66m I increased that to 4.66m but only brought down the resonant frequency down to 4.100 mhz.
I looked at the frequency I wanted which was 3.740 and the difference to 4.100 or so, I decided to take the difference from 3.740 which was 516 kHz.
Unfortunately I made a mistake doing this subtraction and ended up with 1 kHz less, my frequency calculation ended up with 3.124 mhz.
So with this mistake I carried on and x that by 3 and the magic number of 9.368, divided that into 598.5 (EDZ formula for top elements), so the final top element came up with 63.88 feet per element.
So with that in mind and nearly forgetting where and how I got there with all the scraps of paper, my final top elements are…
19.44m per top elements feeder 4.66m into 1 to 1 coax coiled balun into 50 ohms.
Reports so far have been outstanding at my qth never before in 15 years have I ever got out so well on 80.
This antenna will require an atu and is 80m only.
 

Saturday, 11 February 2012

RADARSPOTTERS

Seems my Blog on the Radarspotters site with video included of my packing from them down there in Essex was removed.
It certainly was not open for debate with anonymous bloggers, I was not going to give out personal information to them was I, who are they well there you are no one knows.
I was not going to be put in the dock for them to bring me down was I,  they could have been from them down there in Essex, and it could be their chance to get me back for showing my video to the whole world.
It's strange don't you think that they still have a blog on them down there in Essex, slagging off calling names and all those things, but where does it get you in the end, no where.
They removed my Blog and I didn't call anyone just shown the truth with my video.
What folks will say when they don't have to give their real names, I have not called this company to anyone just plain and simple just show the real truth in a video, that can't lie.
If you search hard enough on the Webb you will see my real ID, I have not tried to hide it as I have only shown the truth on video.


It here again if you want to see it:-



73


Friday, 3 February 2012

WATERS & STANTON

PACKING an 18kg radio equipment, see how the professionals
packed mine just a few weeks ago.


 
 
What do you think..73 John