[Lf] [Fwd: LF: IK2DED beacon and E field probe.]

[Andre Kesteloot]

"Alexander S. Yurkov" wrote:

> Hi, Rik and Group.
>
> On Thu, 19 Sep 2002, Rik Strobbe wrote:
>
> > Antenna current = 1.8A
> > Theory : radiated power = 0.06*1.8^2 = 194mW EMRP (= 583mW EIRP or 355mW ERP)
> > Reality : about 35mW ERP (based on field strength measurement)
> > Difference : -10dB !
> > Reason : antenna surrounded by many trees
>
> -10 dB? Hmmmm... To decrease ERP by 10 dB total curent in trees should be
> about 67 per cent of antenna current. May be it is some another reason?
> 2 or 3 dB is not surprise, but 10 dB....
>
> I wonder why my message on RX3QFM does not go to a Group? Two times I try
> to send and there is no echo for a long time... But another MSG go
> sucsesfully. I'll try ones more...
>
> 73 de RA9MB/Alex
> http://www.qsl.net/ra9mb