Message-ID: <4FE11896.9000002@iup.uni-heidelberg.de>
Date: Wed, 20 Jun 2012 02:25:58 +0200
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: DK7FC on 473.5
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Hello Mike,

Thanks for the infos. I've never seen an email from you here, so 
probably you are focusing on MF rather than on LF?

Am 19.06.2012 23:13, schrieb Mike Thayne:
> Hello Stefan,
> My 500 transmit set up has been dismantled for some time. I achieved only
> local QSO's up to 225 miles due entirely to my very small antenna in my very
> small garden.
What were the aerial dimensions? How much wire in which height? Which 
loss resistance and RF power did you use?

>   As Mal once said to me I need to move house! Well that is not
> possible but I could go /p and I have been following all your activities to
> learn from your experiences.
Oh, i'm glad. Thanks, very kind.
Well, i think a 300m kite antenna is not necessary although it would be 
interesting to couple the TX in a Zepp- or Fuchskreis- configuration 
(you know?) since it is a 1/2 wave vertical then :-) No earth would be 
needed and you could use it on /m as well, HI.

I personally think that a real full size dipole could be very 
interesting. 2x 150m is handy and quickly hung up in a forest. Sure, the 
efficiency wil lbe low but... you know, worth to try! It would be a fine 
RX antenna, due to the low noise location...
We have discussed this in the eginning of the VLF times (earth antenna) 
and it was a good fun just to try what comes out. On MF you will need 
some height above ground of course. But if you can manage to get an 
average height of say 10m my guess would be that this will work well, 
i.e. a few % efficiency. Maybe others want to comment? :-)

>   I am also encouraged by Finbar EI0CF, who has
> achieved great success on 500 portable as well as from his home QTH.
>
> I am a technician not an Engineer or Scientist (ex. marine R/O) but I can
> reproduce ideas from others so I am a keen observer and one of the many "silent"
> members learning from the group.
>    
That sounds good! I think there are much more observers here than one 
would expect.
> Close to the North Sea my /p activity will take advantage of that,
> rather than forests.
>    
Oh, ah, OK. So, anyway a kite? If you can drive to the sea with your car 
and have strong winds there i suggest to try this kite: 
http://www.funwithwind.com/TestKitchen/ContentPlus.asp?cmd=CONTENT&articleID=265, 
power sled 24. I'm using the power sled 36 and 81 here but on the sea 
the smaller one is the better choice i think...

> Good luck on the new band and I hope to join you there live on air, in January
> 2013.
> 73, Mike, g3gms
>    
R, OM. See you then!

73, Stefan/DK7FC