|
Mal,
You
will just have to wait then.... I certainly have both the
equipment and the antennas (both calibrated) needed to measure
field strength available to me but you have already said that my
measurements would be meaningless and disparaged both my ability and
qualifications - as well as those of others. So NO I will certainly not bother
with your transmissions or, indeed, pursue this subject further as my
expectation of your response has been borne out.
Paul G8GJA
Radio amateurs do not have suitable calibrated
equipment, suitable antennas nor in most cases the expertise to carry out
these measurements.
Can you measure my ERP ? and if so what is it
?
From your statement I assume you are an expert and
qualified to make these measurements.
I am frequently on 137.7 and 136.318 I now await
your observations.
G3KEV
----- Original Message -----
Sent: Wednesday, February 16, 2011 3:24
PM
Subject: RE: LF: TA TONITE
Mal,
The reference ...'especially by Radio Amateurs' could
well be considered offensive and is definitely not borne out by fact. I
suppose that the only qualified people would be marine radio
officers?
I
will not request a retraction - knowing you it would not be forthcoming -
but could you be a bit careful with sweeping generalisations in the
future?
Paul G8GJA
Toni
It is all Guesswork trying to measure ERP some
hundreds of miles away. especially by Radio Amateurs.
I have seen figures in the past and after a detailed
mathematical analysis the concluded statement was that this could
be 6 dB either way, in other words the erp measured could be 1W erp
or maybe 4w erp or even worse a lot less.
Let them believe what they like hi
g3kev
----- Original Message -----
Sent: Wednesday, February 16, 2011
1:08 PM
Subject: Re: LF: TA TONITE
Thanks Rik
I've read somewhere that DCF39 has 40kW
EIRP. So we would have around 4W EIRP. Last week a station measured our
field strength, 100km away and came to 0.4WEIRP. This is probably a
little bit to low. Anyway, it shows me again, that most amateurs
overestimate their ERP. Even Mal has probably not the Watt he claims
;-)
73 de Toni
2011/2/16 Rik Strobbe <[email protected]>
Hello Toni, group,
I measured
the HE3OM signal 41dB down on DCF39.
Distances to HE3OM (504km)
and DCF39 (515km) are almost identical.
This might give the US stations a clue
what signal strength they can expect from HE3OM and what QRSS speed
Tony could use to be copied.
73, Rik ON7YD
Dear Jim, Mal and LF Group Unfortunately the tower is not
nearby my house and I can't leave the station running unattended. And
the nights I can spend in Sottens are limited by my health and my
wife, hi. So there is no trial before, I have just next Friday
night. If I take a look at the reports we got in the past two weeks
from stations 2000-3000km away (always good audible), it should be
possible to span 6000km using QRSS10. On the receiving side, we may
be able to see stations let's say with QRSS60. This would mean, that
we could make only one or two QSO's. May be it's better to try
Crossband: we transmit in QRSS10 and listen on 80m. This would give
more stations the opportunity to contact us. However, if there is a
station from the East Coast we copy in QRSS10 it would get the
priority. What do you think about this approach? 73 de
Toni
2011/2/15 James Moritz <[email protected]>
Dear
Toni, LF Group,
HE3OM has the advantage of a much stronger TX
signal than most Eu stations, so I guess you have a good chance of
being copied in NA on Friday night, unless the propagation is very
poor. But as you will have seen from the activity last weekend,
forward planning is always a good thing, especially where a single
QSO takes hours. If possible, I would suggest transmitting some
beacon signals from HE3OM between now and Friday, so that North
American stations can get a good idea what QRSS speed can be copied
from your station. Also, try to receive any W/VE beacons that might
be running, so that you also know what the requirement will be in
the other direction. Finally, I have usually found reception of US
stations is best just before dawn here, so make sure you are not
going to be busy on Saturday!
Good luck,
Cheers, Jim Moritz
73 de M0BMU
This email, including any attachment, is a
confidential communication intended solely for the use of the individual or
entity to whom it is addressed. It contains information which is private and
may be proprietary or covered by legal professional privilege. If you have
received this email in error, please notify the sender upon receipt, and
immediately delete it from your system.
Anything contained in this email that is not
connected with the businesses of this company is neither endorsed by nor is
the liability of this company.
Whilst we have taken reasonable precautions to
ensure that any attachment to this email has been swept for viruses, we
cannot accept liability for any damage sustained as a result of software
viruses, and would advise that you carry out your own virus checks before
opening any attachment.
This email, including any attachment, is a confidential communication intended solely for the use of the individual or entity to whom it is addressed. It contains information which is private and may be proprietary or covered by legal professional privilege. If you have received this email in error, please notify the sender upon receipt, and immediately delete it from your system.
Anything contained in this email that is not connected with the businesses of this company is neither endorsed by nor is the liability of this company.
Whilst we have taken reasonable precautions to ensure that any attachment to this email has been swept for viruses, we cannot accept liability for any damage sustained as a result of software viruses, and would advise that you carry out your own virus checks before opening any attachment.
|
