WorldwideDX Amateur Radio Forums

Sirio Antenne - Products
ther link for a pdf of the manual is at the bottom of the page

longer then 90 inches?

H&Y does import the real Sirio product. I don't know who you talked to in Italy but Stefania will confirm this is the case if you need it from the source. That's a real Sirio box and label on the Vector 4000. H&Y has just requested they label all of their Vectors as LW-150 units.

I didn't talk to anybody - except for Dago971.
Re-read...

__________________
BASE: Kenwood TS-2000 w/Alpha Delta DX-CC, Diamond X50A, Sirio SY27-4, and IMAX 2000.
MOBILE: Galaxy DX99V w/RF Limited CR-577 mic, Sirio Z-180. Yaesu FT-8800R & Diamond NR-770.
"...2 WR-011..."

106.69"

__________________
Proud Republican

The basic information is still the same. The LW-150 sold by H&Y is the new Vector 4000 made by Sirio for H&Y. The only change between a new Vector 4000 and the new LW-150 is the print on the green box label. Look at the connector bracket used on these new models. The Sirio name is molded into the casting on both the LW-150 and the Vector 4000.

The 106.69 inches is longer then I would have expected because the radials and loop together are suppose to form an electrical 1/4 wavelength. This measurement does contradict the statements made in the original Avanti patent. It does however support the results Bob has obtained and my findings on the FM broadcast band. The FM design gain peaked out with 1/4 wave radials also.

30 years later the Sigma still seems to be the least understood of all verticals. To date there is not a single antenna calculator to design one. NEC can't even begin to accurately model the design. Seems the only solution is more in the field testing to confirm the measurements are producing maximum gain.

i dont know what to make of the extended radial sleeve,
you can be sure i will be testing longer radials than i have in the past and finding the best monopole length to go with it at my location,
i wont be using sofware even if i knew how to use it correctly which i dont,
cebik already told me that design would be very difficult to model accurately,
EZBOB is good enough for me,
i dont need to understand exactly how it works to get the best performance from it, i would like to but its not likely and believe me i have tried so has toll-free,
the antenna does what is claimed by avanti, bob85, shockwave, freecell, toll-free, wolf radio, and others, plus a very much possible from cebik,

there is only one sure tuning method i know of that does work and thats the method me and shockwave have been using more or less since the design first came out, tweak and peak a distant stable signal,
i would pit my method against any software you care to use

__________________

tom bearden taught me that quantum entanglement allows thought to travell faster than the speed of light, this explains why at first you can think somebody is smart but if you wait a while you will see they are not very bright at all.