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Re: LF: Testing WSPR2 to night a short antenna for future mobile use on

from [DK7FC] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: Testing WSPR2 to night a short antenna for future mobile use on MF band.
From: DK7FC <[email protected]>
Date: Tue, 10 Jun 2014 23:15:24 +0200
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Watching!
However the QRN is still extreme!
I made it to PA0A (450km) with 100 uW ERP from an indoor loop! So you may have chances!
Do you have a photo? How fast do you intedn to drive while transmitting?
Some years back i've been QRV on 40m CW while driving on the highway (worked PY on 17m and so on). I took a modified CB antenna for the band. The SWR became a function of the velocity due to the angle of the antenna to the car :-)

73, GL, Stefan

Am 10.06.2014 18:53, schrieb André Guyé:

Hi to all.

 

I am thinking now about the design of a short vertical antenna, for MF mobile use in next winter season.

 

To night I’ll test this first configuration : a 2 meters high tube (2 cm of diameter) and a top hat (wheel shape) 80 cm of diameter. It needs about 2.4 mH base coil tuning. The TX is 3 Watts output. Base voltage is 2,2 kV RMS.

 

I’ll test this small antenna to night, beginning at 2000 TU on WSPR2 MF band. The expected ERP is about 1 mW.

 

All reports be welcome. Note that to night the testing antenna has his base on the garden with a ground earth rod, so it is not installing on my car.

 

73 de Andy. F6CNI - JN19QB



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