I have a multiband Quad as you describe Joe. I built (but did not model) concentric multielement Quads for two metres and 70cms. These behaved fb until I nested them into the existing HF Quad. The re
And thank you Joe.. I was wondering what I had done wrong, so it's nice to know that you had the same result. Like you, I'll be putting the VHF/UHF stuff on a second tower. 73 John EI7BA http://www.i
When I refurbished mine, I threw away the metal spacers that fit between the balls, and filled the complete race with balls. This spreads the weight more evenly, and prevents the denting, and wear an
Check out "Another Way to Look at Vertical Antennas" by Rudy Severns N6LF....QEX March1999 and http://www.iol.ie/~bravo/low_band_antennae.htm 73 John EI7BA Here's an interesting optimization question
Take a look at http://www.iol.ie/~bravo/Troubleshooting%20Traps.htm it may be of help 73 es HNY John EI7BA On Nov 16, 2004, at 3:46 PM, asciibaron@comcast.net wrote: i tried to disassemble the driven
Hi Phil.. Mark modestly left out his web address which is at http://www.qsl.net/n1lo/index.html It's well worth a visit, and not only for his mobile info. I use homebrew whips similar to his, with st
I'm very sorry to hear that news Dave... I had one of "Dicky Bird's" minibeams in the mid 60s. It was a clever design, but difficult to set up. When properly tuned, they worked very well. I made a f
Hi Pete.. You can see it at the UK agent's site at http://www.braeside.plus.com/spid/az/az.html. 73 John EI7BA _______________________________________________ ________________________________________
* I don't have the Cubex info, but one thing I can tell you is... Do NOT drill the arms... Firstly it weakens them, and secondly it's helpful to be able to adjust the element position. I use strong c
*Get yourself a Spid rotator, then you don't even have to re-aim it.. just tell the Spid where the beam is pointing. 73 John EI7BA http://www.iol.ie/~bravo/ * ________________________________________
It'll work OK Kirk... You don't have to add length, but you will increase it's efficiency if you do. You may find http://www.iol.ie/~bravo/80&40mVertic.htm of some use.. Take a peek. Vy 73 John EI7BA
I use cheap homebrew versions for 80 and 160m..They work very well. Vy 73 John EI7BA http://www.iol.ie/~bravo/low_band_antennae.htm _______________________________________________ ___________________
I'd try about 12m of wire. Connect the centre of the wire to the top of your vertical, and run the two 6m lengths in opposite directions, as horizontal to the ground as possible. That's probably a bi
In one of the old ARRL handbooks, there was a design for a tiltover tower made of well casing. I've drawn a pic from memory at http://www.iol.ie/~bravo/Well%20Casing%20Tower.htm. A friend EI9FE, succ
Hi Steve.. Take a look towards the bottom of this page.. http://www.iol.ie/~bravo/80&40mVertic.htm 73 John EI7BA _______________________________________________ ______________________________________
Hi Marc. Take a peek at these.. http://www.iol.ie/~bravo/r7_vertical.htm http://www.mrs.bt.co.uk/mrs/r5/ http://www.xs4all.nl/~pa0fri/Ant/R5/onhr5eng.htm http://www.telusplanet.net/public/telwest/R7/
My 160,80 and 40m dipoles are at 45ft, with the widest angle possible between dipole legs. As Bill says, this system works very well. Mine has almost 1:1 SWR on all three bands. Check out all the oth
Hi Mike.. I think that's normal... The traps have a chunk of aluminium tubing at each end, which loads the trap so you read a much lower frequency. What I did with my R7, was to take a note of the tr
Hi Jim.. I'd have to disagree with that statement. I have both vertical dipoles and inverted Vs for 80 and 160m. The Verticals are separated from the Vs by about 500 yds, so they don't "see" each oth
The antenna is an "off-centre fed, capacity hatted, vertical dipole"... Try saying that after fifteen pints..{:o) John EI7BA _______________________________________________ __________________________