Hi Stefan,
most of your questions have been answered incl.some pictures in my mails
from
9.9.2012 and 10.9.2012 to this reflector.
I can re-mail them to you privately if you shouldn't have them anymore.
Addendum:
In a *short* test transmission last winter with ~ 200W (or so) I was able
to see my signal in normal CW on a finnish remote Perseus
in about 2200km distance.
But the PA still needs some tweaking to ensure it stays alive also during
longer lasting transmissions.
The dipole's feed point impedance (at the antenna end of the feeder)
is about 44Ohm at resonance around 472kHz (see pic).
73
Clemens
DL4RAJ
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]] On Behalf Of Stefan Schäfer
>Sent: Thursday, August 15, 2013 11:45 PM
>To: [email protected]
>Subject: Re: LF: Lighthouse MF activity from OH next weekend
>
>Hello Clemens, MF
>
>You have a full size dipole for 630m, that is excellent! What is the
>height above ground and the feed point impedance? Did You make
>first QRP
>tests with a signal generator, maybe in QRSS-10 on my grabber,
>like DL7SAQ?
>
>I'm looking forward to this weekend, regarding MF CW activity!!
>
>73, Stefan/DK7FC
>
>Am 15.08.2013 23:32, schrieb Clemens Paul:
>> Hi Christian,
>>
>> I hear your CQ-Call with 15dB over S9 (noise with S8 in 500Hz BW)
>> on 472,2.
>> Not ready to TX yet.
>>
>> Ant.2x155m Dipol;
>> RX Perseus
>> http://no.nonsense.ee/qthmap/?qth=JN68KJ79WJ
>>
>> 73
>> Clemens
>> DL4RAJ
>>
>>
>>> -----Original Message-----
>>> From: [email protected]
>>> [mailto:[email protected]] On Behalf Of C. Groeger
>>> Sent: Thursday, August 15, 2013 11:35 PM
>>> To: [email protected]
>>> Subject: Re: LF: Lighthouse MF activity from OH next weekend
>>>
>>> Hello Paul-Henrik,
>>> Can hear your sigs 579 qsb.
>>> Called you several times but you seem to be in beacon mode?
>>> 73, df5qg
>>>
>>> Christian Groeger
>>>
>>> [email protected] schrieb:
>>>
>>>
>>>> Hello,
>>>>
>>>> I'm hereby announcing that OH1AH (The Top Radio Club) will
>bring 630m
>>>> equipment for the yearly lighthouse activity at Utö in the Finnish
>>>> archipelago.
>>>>
>>>> We hope to make some daytime groundwave QSO:s over the
>Baltic Sea as
>>>> well since the Darlowo NDB in Poland was a good mid-day signal last
>>>> year.
>>>>
>>>> Last summer we made some rough plans for how to put up a
>fairly decent
>>>> TX antenna and located a few old radials from a decommissioned
>>>> maritime NDB plus some thick general grounding wires
>heading for the
>>>> sea. There is almost no soil at the site so "artifical" ground is
>>>> brought up from the seashore at about 100m distance.
>>>>
>>>> The International Lighthouse Lightship Weekend activity is 17-18
>>>> August 2013 - Duration 48 hours from 0001 UTC 17.8.2013.
>We will start
>>>> building the station on Friday morning, August the 16th and may be
>>>> testing in the same evening if all goes well. Due to travelling
>>>> arrangements we will have to take down all equipment on
>Sunday morning
>>>> as usual.
>>>>
>>>> I have made a compact "expedition tuner" with a 600uH variometer,
>>>> universal impedance matching transformer and an antenna
>current meter.
>>>> The TX will be a JUMA TX500, 60W max. The setup was tested
>tonight at
>>>> my QTH and good signals were received at 350km distance so
>now it is
>>>> up to what kind of antenna we can produce on-site.
>>>>
>>>> Utö is in the locator KO09QS
>>>>
>>>> Due to the traditional activity on the HF bands this will not be a
>>>> pure MF operation. We will try to announce MF activity on dxsummit.
>>>> Unless local QRM or other factors favour another QRG we will try to
>>>> stay around 472,5kHz.
>>>>
>>>> Comments and suggestions are welcome.
>>>>
>>>>
>>>> BR and hope to make at least a few QSO's
>>>>
>>>> Paul-Henrik, OH1LSQ
>>>>
>>>>
>>>>
>>>>
>>>
>>> -----
>>> E-Mail ist virenfrei.
>>> Von AVG überprüft - www.avg.de
>>> Version: 2013.0.3392 / Virendatenbank: 3211/6579 -
>>> Ausgabedatum: 15.08.2013
>>>
>>>
>>
>>
>
>
>
>-----
>E-Mail ist virenfrei.
>Von AVG überprüft - www.avg.de
>Version: 2013.0.3392 / Virendatenbank: 3211/6579 -
>Ausgabedatum: 15.08.2013
>
>
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