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HB9ABX > ANT 25.05.06 15:05l 65 Lines 2180 Bytes #999 (0) @ WW
BID : IZTPKMHB9EAS
Read: DG1VV GUEST DL5SFI DL7NDF DK8TQ
Subj: Why is RoomCap better ?
Path: DB0FHN<DB0RGB<DB0SL<DB0FSG<HB9EAS
Sent: 060525/1333z @:HB9EAS.CHE.EU [Basel JN37TM] DP6.00 $:IZTPKMHB9EAS
From: HB9ABX @ HB9EAS.CHE.EU (Felix)
To: ANT @ WW
Reply-To: HB9ABX @ BH9EAS
Short explanation: Why is my antenna better:
I already gave some explanations, why my antenna is better, than
e.g. the Microvert, which is a better known short antenna type:
Here follows what I wrote some time ago:
On July, 2005 I wrote:
"
A Wonder Antenna ?
----------------------------------------------------------------------
Dear OMs,
in several mails I received comments, that wonders
are physically not possible.
I never told that !
My new antenna, simply is a construction where all unnecessary
losses are prevented, and where the target is, to radiate most
energy towards the sky, into the space above the antenna.
Not into the building, not into the ground, not to burn
the power needless in loss resistances.
Most short antennas have high losses in copper losses,
ground resistance, separation currents, heated isolation chokes,
lossy traps, matching networks and so on.
I am told frequently, that the very low radiation resistance of
short antennas prevents a high efficiency.
This is absolutely wrong.
The efficiency of any antenna is obtained by the relation between
series radiation resistance and the series loss resistance,
disregarding the absolute value of the radiation resistance!
(If the total loss resistance would be 0, then the efficiency
would be 100 %).
If you manage to keep loss resistance to a few percents of
the radiation resistance, you reach a very high efficiency.
"
Now, I may add something more:
Why does this happen ?
The RoomCap works mainly with the electric field, produced
by the radiator.
The electric field is always generated between 2 opposite poles
(or 2 planes).
The RoomCap is forming both poles in a controlled manner,
reducing the ground current by using a floating feeding system
called VARYLINK system.
Without this, a large amount of the generated field is
absorbed by a lossy ground path.
Furthermore, the VARYLINK system allows a full adaptation
to the radiation resistance, ensuring that nearly 100% of the
transmission power is transformed into waves.
I hope that this short explanation helps you.
Best regards
Felix HB9ABX
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