Hello George,
So, welcome to the reflector!!
I can read out your motivation in the text! Be sure you can get all
needed informations to get QRV on LF. I am sure there are many people
who will be interested in a QSO with you :-)
Our distance is 1776km. This is no problem on 137kHz for me i think.
But it also depends on your RX, of course. On <9 kHz it is a little
more challenging ;-) but maybe it will be possible with the 300m
vertical...
Starting with receiving makes sense, better on LF than on VLF, if you
want to catch ham signals. I will need some weeks to reach that
distance on the dreamers band ;-) There are many strong stations who
will transmit a beacon signal for you if you want to check your RX
antenna on LF. It is rather difficult to come on the band in summer
since there is much more QRM and not so much activity but anyway. If
your system is optimised until autumn, the next active period can come
;-) And there is activity in the summer as well.
There are almost infinity informations for you here...
I do not want to tell too much, but you can be sure i could tell many
hours about this great hobby ;-)
Just keep us informed what you are planning. There are many very well
experienced OMs here...
Best 73 and a good start on LF/VLF :-)
Stefan/DK7FC
Am 06.04.2010 13:45, schrieb George Vastianos:
Hello Stefan
Thanks! It is true that SV land is not active on 136khz even that we
got this band on 4/2006... First of all congratulations for your
achievements on dreamers band!!! I got informed about your work on 9khz
from G3XBM's blog that is my favourite blog (it is my source for
inspiration, i check it every day and iam big fan of him - even that i
never got in contact with him and dont know him in person)
I have a "kind" of interest in LF and i say "kind" because my only work
on LF was an upconverter i constracted many years ago with an SA602 to
receive SAQ on 10MHz... thats all.
I have restrictions in space on my main QTH in Athens something that
makes my operation difficult on wavelegths 80m and below... BTW the
work i see from you, G3XBM (on 500khz), M0BMU and others make me to
cheer up and dream that maybe i can do at least "something" on VLF/LF.
After the last post of G3XBM about your last activation on 9khz..I
subscribded to the reflector to receive more info about what you did
and what was the longest dx.
My locator is KM17UW and i think that our distance from your portable
location must be something close to 1750kms
Until now Iam reading about E-field and H-field antennas and Iam
planning to build one probe and one loop... from all the things I found
I think for (9 khz) the most interesting H-field antenna is the loop
with the 9khz bandpass of M0BMU and the E-field is the ADA, AN ACTIVE
DIFFERENTIAL ANTENNA FOR 5Hz - 500 Khz By I1RFQ where i've done already
the calculations in order to build an e-field dipole for VLF only
freq. 3+ Khz.
So I plan and hope to construct soon these two antennas for 9KHz
reception. After that my next step is to make a loop for 136KHz based
on papers of M0BMU and try receive LF signals on 136khz. In greece we
have a strong QRM source very close to LF band that belongs to the
Greek Navy (RTTY)...Iam sure all of you who are active on this band
know what iam talking about...so this QRM makes difficult for me be
active since it is not more than 100km far from me...
So at first I will try to become an LF SWL..
About the 9KHz the greek laws leave open the activities below 9khz with
the only point to not produce QRM to the services above 9khz... this
gives me an oportunity to make some experiments on this frequency using
narrowband techniques with low power and "ground antennas" on the
transmitter side...like G3XBM
All these things are in my "wish" list.. and I must do actions instead
of wishes. So I'll start to build RX antennas for 9KHz and i'll see
what will come next
It would be nice to have a QSO with you but i think on these
frequencies the only option would be cross band.. me on HF and you on
LF
TO ANSWER YOUR QUESTION: YES MY WISH IS TO START RECEIVING LF/VLF AND
GET YOUR SIGNALS AND I WILL TRY TO MAKE IT REALITY
KEEP UP THE GOOD WORK
I will keep you informed on what iam doing
73
sv8gxc
----- Original Message ----- From: "Stefan Schäfer"
<[email protected]>
To: <[email protected]>
Sent: Monday, April 05, 2010 4:59 PM
Subject: LF: AW: E-field probe antennas for dreamers band?
Hello George!
I was astonished as i saw your callsign there. You are the first
station from greece that i saw here on the reflector! :-) I would be
glad to do a QSO with you on 137kHz if you are QRV. Not because i am a
"DX-hunter" but rather because greece does fascinate me (although i
probably do not know very much of it).
What is your Locator and do you plan to receive on LF/VLF? :-)
vy 73 and all the best!
Stefan/DK7FC
PS: sri, cannot answer your question
________________________________
Von: [email protected] im Auftrag von George Vastianos
Gesendet: So 04.04.2010 22:59
An: [email protected]
Betreff: LF: E-field probe antennas for dreamers band?
hello
Does anyone who received DK7FC's signals was using e-field probe
antennas like BBB-4????
73
sv8gxc
--------------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.800 / Virus Database: 271.1.1/2791 - Release Date:
04/04/10 21:32:00
No virus found in this outgoing message.
Checked by AVG - www.avg.com
Version: 9.0.800 / Virus Database: 271.1.1/2793 - Release Date: 04/05/10 21:32:00
|
|
