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Leon, DL7LL

@DL7LL
 Berlin, Germany
Joined September 2013
  • Tweets387
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  • Followers350
Today @dk0tu we hung up a T-antenna next to a lake in Brandenburg. The 160m band is almost QRM-free. =D RX: Airspy HF Discovery+. #cqww160
Image from Leon, DL7LL (@DL7LL)
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Starting my 23 cm journey with building a 1296 MHz high-pass filter.
Image from Leon, DL7LL (@DL7LL)
Image from Leon, DL7LL (@DL7LL)
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working on a load pull tuner and created this
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In einer Boeing 737 werden für Kurzwelle anscheinend Amateurfunkgeräte verwendet 😯, u.A. MFJ Antennen Tuner.
Steve Giordano (@SteveNomadic) profile pictureSteve Giordano
@SteveNomadic5 Mar 2023
Replying to @JRusOlalla @JonnyHorsepower
Installed per Boeing EO
Image from Steve Giordano (@SteveNomadic)
Image from Steve Giordano (@SteveNomadic)
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Trying to gamma-match a lightning rod. This is my view.
Rooftop-type view of Berlin looking into the south. In front is a miniVNA tiny laying on top of a stone securing a lightning rod (which is not in the picture).

ALT Rooftop-type view of Berlin looking into the south. In front is a miniVNA tiny laying on top of a stone securing a lightning rod (which is not in the picture).

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Had a great time! First antenna-build this year. 56.1+j3.46 Ohm correlates to a return loss of about 24 dB or an SWR of 1:1.3.
Image from Leon, DL7LL (@DL7LL)
Jan, DL7JC (@j4n_kr) profile pictureJan, DL7JC@j4n_kr20 May 2021
We thought, why not build a temporary 1x4 array out of F9FT 9 Element Yagi Antennas for fun @dk0tu. This is our result. Together with @DL7LL and DM4GO.
Image from Jan, DL7JC (@j4n_kr)
Image from Jan, DL7JC (@j4n_kr)
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Mother and Baby BIRD.
Image from Leon, DL7LL (@DL7LL)
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Leon, DL7LL retweeted
Jan, DL7JC (@j4n_kr) profile picture
Jan, DL7JC@j4n_kr19 Oct 2020
Building a 1.8 MHz off center dipole in preparation for the CQ WW SSB together with @DL7LL for @dk0tu – at Berlin, Germany
Image from Jan, DL7JC (@j4n_kr)
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Working together with @j4n_kr @dk0tu on a fully automated antenna matching network for the following fieldday this weekend. 😃
Image from Leon, DL7LL (@DL7LL)
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Die @TUBerlin hat jetzt einen MATLAB-Campusvertrag 🥳. Ich verziehe mich dann jetzt erstmal für ein paar Tage in eine dunkle Ecke.
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Measured out an old mast and had to take this picture!
Image from Leon, DL7LL (@DL7LL)
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Today I borrowed the special call sign DH0YOTA for 5 hours and made 240 QSOs @dk0tu .
Image from Leon, DL7LL (@DL7LL)
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Leon, DL7LL retweeted
Felix (@b4um_) profile picture
Felix@b4um_24 Nov 2019
#cqww Grayline time at DF0UK
Image from Felix (@b4um_)
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Leon, DL7LL retweeted
bastla (@dl7bst) profile picture
bastla@dl7bst5 Nov 2019
Our @dk0tu member DK4VW is working hard for the #AmateurRadio bands at #ITUWRC-19 in Sharm El Sheikh, Egypt. Topics are 47 GHz band (settled), 50 MHz band (WIP), Wireless Power Transfer aka WPT (settled) and the future study of overlaps with Galileo in preparation for WRC-23.
Image from bastla (@dl7bst)
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40m Rotary Dipole für @dk0tu aus GFK-Masten. =D
Image from Leon, DL7LL (@DL7LL)
Image from Leon, DL7LL (@DL7LL)
Image from Leon, DL7LL (@DL7LL)
Image from Leon, DL7LL (@DL7LL)
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Achja, und so hängt er jetzt. =D
Image from Leon, DL7LL (@DL7LL)
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Got a Airspy HF+ Discovery for @dk0tu 😍
Image from Leon, DL7LL (@DL7LL)
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Mantelwellensperre für den 40m Rotary Dipole.
Image from Leon, DL7LL (@DL7LL)
Image from Leon, DL7LL (@DL7LL)
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Nacht- und Nebelaktion @dk0tu .
Image from Leon, DL7LL (@DL7LL)
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Leon, DL7LL retweeted
QRT (@DG1TAL) profile picture
QRT@DG1TAL12 Sep 2019
Auch dieses Semester gibt es einen Amateurfunkkurs von @dk0tu an der @TUBerlin 😏 dk0tu.de/Kurse/AFu-Lizenz/Cu…
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