coils on mobile antennas

[Mr.5150cbrn]

depends on who that somebody is ..........
for similar designs , the larger the gain claim difference the more likely there are errors , location/terrain skewing as well as manipulation/lies are not uncommon either .....

heres what Sirio uses .

http://www.gain-master.it/technologies.php

"SIRIO has made comparisons with the best antenna on the market, with the aid of sophisticated equipment such as:
- Electromagnetic computer simulations carried out with *CST Studio Suite 2008.

- Far-field signal analysis with portable Spectrum Analyzer FSL-6 *Rohde & Schwarz.

- S-parameters analysis in time and frequency domains with 8753ES Vector Network Analyzer and E5071B *Agilent Technologies.

- RF power tests with directional sensor NRT-Z14 (25MHz-1GHz) *Rohde & Schwarz.

- Coil thermal image with *TESTO 880-3.

- Data collection from instrumentation and post-analysis with software developed by Sirio with LabView2009* National Instruments.

- Materials and components tested at extremes temperature with Vötsch climatic chamber VC4018 Vötsch Industrietechnik.

just a little bit more technical than walking around with a meter and relying on radio S-meters with who knows what effecting their antennas .

also its the same snake oil used by sirio in their advertizing claims to fool the buffoons that copy and paste their theories .
as if they did utilize all of the above into every single antenna , there wouldnt be any other manufacturers in existence and everyone would own a sirio
and the home brewers would still be left out in the cold
as the "HOMEDEPOT" doesnt offer the test equipment that are described in the above post!


also i may add , the trusty old field streangth meter that has been around for nearly 70 years or so , that also the space programs , navy and other services have used with numerous great results !

[Bulldog-Unit777]

also i may add , the trusty old field streangth meter that has been around for nearly 70 years or so...

Mr.5150 you hit the nail on the head! In the end no matter what is being said or done the field strength meter, when used correctly gives a pretty good picture.