Hi All,
I just come to finish my attempts of antenna and I would like to make share this
experiment.
At first, my purpose, being Ham Radio was to make myself an outside antenna for the RB
with the assembly of one FRANKLIN
http://www.lesaunier.com/htm/franklin1_eng.htmIt gives the following result:
With 10 metres of cable, an antenna situated in 15 metres above the ground but
regrettably with obstacle (trees) in the East and West.
The length of cable is limit, if we increase it, we lose the gain of the antenna.
I tried coaxial like typical cable for tv satelitte and with feeder RG58U, it is has little near similar.
On the other hand it's necessary credit note of
very good connectors. I had catastrophic results with a downmarket connector (especially connecting with the RB)
I added an amplifier for satelitte TV model EDA-2GR ( ELECTROLINE) bought from market and who gives a gain of 11dB.
For 10 Euro and that devoted the following result:
more information about this kind of amplifier:
http://www.electroline.com/en/products/drop_amplifiers/eda/index.html it is very satisfactory.
According to attempts on a SBS-1 (made by a friend with this type of amplifier) that owed
not to work very well, but with the RB it's OK.
I think that it is a good point for the RB which accepts better in entry a large amplified signal.
An attempt with another amplifier for satellitte from CONRAD who had to look 20db of gain was a little less satisfactory but all the same very acceptable with regard to the price. (15 Euros).
In final, I bought the amplifier from KHUNE (30 dB), specific for 1090 MHz.
The result is the following one:
It is the best, because not only the coverage is enlarged, but I can also have
Flights on LFMT on the ground (with the 11dB I lost them below 90 feet).
And also have flights in approach on Marseille and Gerone (from 2000 feets), these aeroports are more than 100 miles from home.
The price is also much more brought up as the model 11 dB!!!
Conclusion:We can for not expensive money, made an outside antenna with one FRANKLIN and an amplifier for satellite.
Have of the typical cable satelitte and good connectors.
With a KHUNE Amplifier it is even better, but much expensive.
Indeed on, as also written in this forum, the more the antenna is high, the more it is better kicked away that works.
A last image of my highest score with 94 planes in direct reception.
F6GSG/Patrick
