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DL9ECA Germany flag Germany

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Ham Member Lookups: 8080

 

i'm now qrv on:

 kHz

Hello dr. YL, XYL, OM

i´m mostly interested in contesting. Running a FLEX 5000A with second RX.

Amplifiers are an old russian LV6 and a Heathkit SB221 amplifier.

Antennas in use are Quad and Vertical Antennas (80 + 40m). Also an 5m diameter magnetic loop for RX is in use.

2010

Project in 2010 is an homemade amplifier with the amperex YD1150B. Thats an industrial triode, capable for 6kW anode dissipation.

Antenna project in 2010 is a spitfire version for 160 and 80mno, maybe a tripple endfire for 40m :-)))))

A spitfire version for 40m is perfectly in use. F/B <=30dB; G 6dBi yes

2011

The amplifier project is still on hold. There are too much interrupts by building antennas crying

Project in 2011 is a hexbeam runningas an 2 element broadband on 40m and a shortend version vor 80m. If running well, this will substitue the 80m vertical antenna.

End of 2011 a heart attack stroke me down. So i will be off air up to february 2012. Sorry for that, so no qsl´s and so on.....

 

2012

Think to rearrange my projects and former life. Durnig my residence in hospital my collegas DL1LUI and Dennis built an HPSDR for me. I got it just right befor i had to stay at rehab. Very much thanks to them. Now i change my domicil and built up a new station based on FLEX5000 and HPSDR. Also i will comprise some transistorisized amplifiers. Further no tubes crying. I bought a used aluminium tower. At my new domicil i will built there the 80m Version of my hex antenna.

One of my hexbeams is a receiving antenna of DR1A, where i´m a member of the group. www.dr1a.de

 

2013

in my job as an hf engineer we try to use transistors for getting a plasma. For that we use the transistors as an amplifier. First tries with this transistors were startet in use as an amateurradio amplifier on hf and vhf with great success.

 

2014

first prototype of an short wave amplifier with the freescale MRFE6vp61k25 MOSFET is running.

Filterboard and controller, looks like a PC Box

 

2015

Nothing news. Most time modifiing the amplifier to save transistors.

 

2016

Amplifier becomes stable. i will test it in the upcoming 48 hour contests. See you there.

There i will also use my lifted 80m hexbeam. please listen to me. also i built some beaverage antennas direction US and Japan. Hopefully they will work.

2017

Amplifier is running perfect. This year was very intense coorporating with DH3NAB www.rf-kit.de . I designed the 2k5 Amplifier board in general, Rheinhard did the finish. I desingned the 4 times Antenna switch and the 3kW Tuner board also. I designed the HF-Probe suitable also for 3kW. now we have a perfect kit for running a 2kW power amplifier.

In 2018 we also will design a low pass Filterboard 5th order.

 

some pictures of the hexers:

20-15-10m at 30ft/10m high -------------------------40m at 1m high, still equal to my vertical (12m diamater of spreaders)

Here is the 80m shortend version, also 40m fullsize. both are 2 Element antennas.

40m siganls are about 10db higher then the vertical antenna. 80m must be improved.

16m diameter @ 10m high. look at the smal horses right side down.

best to you

my old Quad magnetic loop 3m dia80m quater wave vertical

 

 

 

free counters

7703705 Last modified: 2016-11-18 11:54:04, 6051 bytes

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