| |
DK8KW > VLF 02.07.00 14:32l 30 Lines 1125 Bytes #-9023 (0) @ EU
BID : FX22HMDB0ABZ
Read: DJ4KI DC6NO DG8NGN DL8ZX DL1NFI DB0FHN GUEST DO1KHS
Subj: VLF: 8.9 - 9 kHz in DL
Path: DB0ABH<DB0BOX<DB0MRW<DB0ERF<DB0ABZ
Sent: 000702/0542z @:DB0ABZ.#NDS.DEU.EU [Salzgitter JO52FD] DP5.07 $:FX22HMDB0A
From: DK8KW @ DB0ABZ.#NDS.DEU.EU (Holger/'geri')
To: VLF @ EU
Reply-To: DK8KW @ DK0MAV.#NDS.DEU.EU
X-Info: Upload without password authentication
Hello Lowfers and VLowfers,
after Walter, DJ2LF and Markus, DF6NM started with some very low frequency
tests recently, three of us have asked the German RegTP for a special
license to use the range between 8.9 to 9 kHz for scientific studies.
The licenses were granted recently, with a transmitter output of 20 Watt
and the modulation bandwidth limited to 100 Hz.
I am currently testing an old 20 Watt music PA with two EL84 and have
ordered 100 pieces ferrite bars and 300m Litz wire to achieve the necessary
1/2 Henry (!) coil to get my 18m vertical LF antenna tuned up to the 35 km
wavelength!
We do not expect much DX from this band, however, tests perfomed in the US
on 3.5 kHz (see http://home.pon.net/785/EQUIP/transmit2.html) and in the
UK by John, G0AKN (http://www.wireless.freeserve.co.uk/) have revealed that
a couple of miles can be reached ... we will keep you informed. My personal
goal for the beginning is to span 5 km.
Best 73
Geri, DK8KW (W1KW)
Read previous mail | Read next mail
| |
