amatorskie forum mikrofalowe

DUBUS 1/2017

- Parabolic dish with intechangeable transverters - facilitate DX QSOs on microwaves - Philipp Printz DL2AM
- Antenna G/T calculators with open-source code.
Part 1: An Antenna G/T calculator (AGTC_lite) without mathematical rotation calculations - Jean-Pierre Waymel F5FOD & Hartmut Kluver DG7YBN
- Investigations about Rain Scatter at 77 GHz - Dimitry Fedorov UA3AVR (uwaga - rysunki na stronach 64 i 65 zamienione miejscami),
- ADF5355 - A signal generatorfor the microwave bands (2) - Ferdinand Schmehr DC8EC
- How to retrofit Ericsson UMTS SSPAs to obtain 300+ watts on 13 cm with 2 x MRF5P21180R6 (1)
- Experiments with launcher probes for OK1DFC Septum Feed at 23 cm with a DIN 7-16 Connector - Harke Smits PA0HRK
- Twin-boom Yagi Antennas for 144 MHz - Slobodan Bukvic YU7XL
- Tropo News
- Aurora News
- 70 cm Meteor Scatter Reports
- Solar Cycle 24 Report, February 2017 - Jim Kennedy K6MIO/KH6
- EME News
- Microwave Europe
- Microwave Spain
- Microwave Japan (przełącznik antenowy na 249 GHz...)
- VHF Australia & New Zealand
- VHF USA
- News & Comments

DUBUS 2/2017

Kolejna porcja ponad 130 ciekawych stron.


Design of Highly Omnidirectional Horizontally Polarized Antennas for 10 GHz using a Waveguide Structure with an Array of Slot Pairs - Jeffrey Pawlan WA6KBL, Prof.Dr.-Ing. Klaus Solbach DK3BA, Prof. Sembiam R.Rengarajan

Enhancing the Stacked Yagi with the Addition of Z Axis Parasitic Elements - Justin Jognson G0KSC

Making a simple Hornfor 47 GHz without a lathe - Andreas Fischer DL2FZN

Sporadic-E Summary Report 2016 - 144 MHz - Joachim Kraft DL8HCZ/CT1HZE

Antenna G/T calculators with open-source code - Part 2: An Antenna G/T calculator (AGTC and AGTC_fast) with mathematical rotation calculation - Jean-Pierre Waymel F5FOD, Hartmut Kluver DG7YBN

A Direct 10268 to 28 MHz Image Rejection Mixer - Paolo Antoniazzi IW2ACD, Marco Arecco IK2WAQ

Tropo News

Aurora News

Solar Cycle 24 repart, April 2017 - Jim Kennedy K6MIO/KH6

Microwave Europe

Microwave Spain

EME News

EME on Small Aperture Horns - Rex Moncur VK7MO, Charlie Suckling G3WDB

Microwave Japan
83 GHz 100mW PA with x6 multiplier for a 249 GHz transverter - Yukio Masuda JA8CMY

Last Minute News (DF-202 and Trop Report)

News & Comments

DUBUS 3/2017

Dziś przyszedł nowy numer, poniżej spis treści:



- A rotatable linear polarisation dish feed for 10 GHz - Charlie Suckling G3WDG

- Triangular Array Rotatable Polarity (TARP) - Part 2
Receive performance evaluation using a Low EIRP Station Simulator - Jimmy Blanchette KK6FAH

- Antenna G/T calculators with open-source code
Part 3: A brief history of the AGTC_lite/AGTC project and some additional references - Jean-Pierre Waymel F5FOD and Hartmut Kluver DG7YBN

- Receiving the 10 GHz EME Beacon DL0SHF on a Yagi - Rex Moncur VK7MO

- Comparisons of QRA64 and JT4 for 10 GHz EME - Rex Moncur VK7MO and Charlie Suckling G3WDG

- Designing a Kilowatt plus 144 MHz Cross Polarised Yagi - Hartmut Kluver DG7YBN

- The 144 MHz Anglian 3L Transverter - Sam Jewell G4DDK

- Twin-boom Yagi Antennas for 432 MHz - Slobodan Bukvic YU7XL

- Aurora News

- Solar Cycle 24 Report Juli 2017 - Jim Kennedy K6MIO/KH6

- Tropo News

- Microwave Japan

- Microwave Europe

- Microwave Spain

- EME News

- 4m & 6m News

- News & Comments

Dubus 3/2017 jest tam też artykuł VK7MO o którym już była mowa na tym forum.


TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI. DARMOWA REJESTRACJA


Nasłuchy w Australii bikona DL0SHF 10GHz z Europy via księżyc za pomocą pojedynczej anteny Yagi 72 elementy.
Muszę przyznać że przedstawiony raport z nasłuchów DL0SHF(40Wat&8m parabola) pozytywnie rokuje dla tego typu anten.
Antena Yagi 10GHz wyliczona za pomocą programu VK5DJ.

Ciekawe, czy w SP ktoś będzie próbował....

I ostatni numer z tego roku:



DUBUS 4/2017

- Triband Transverter for 122 - 134 - 241 GHz - Michael Kuhne DB6NT
- Hints on power measurement in the milimeter bands - Philip Prinz DL2AM
- Very High Gain Amplifier - Daniel Uppstrom SM6VFZ
- Evaluating Parabolic Antennas - Joachim Koppen DF3GJ
- Antenna G/T calculators with open-source code Part 4 - Jean-Pierre Waymel F5FFOD and Hartmut Kluver DG7YBN
- Understanding the OE9PMJ Microwave Filter for 24, 47, and 78 GHz - Paul Wade W1GHz
- Timing for Portable Digital Operation - Rex Moncur VK7MO & Larry Hower VK7WLH
- Combiner for 4 amplifiers in the 3cm band Part 1 - Dominique Fassler HB9BBO
- Aurora News
- Solar Cycle 24 Report, October 2017 - Jim Kennedy K6MIO/KH6
- Tropo News
- Microwave Japan
- Microwave Europe
- VHF VK/ZL
- VK EU uWave DXpedition 2017 - David Minchin VK5KK
- GippsTech 2017 Review - Roger Harrison VK2ZRH
- 4m & 6m News
- EME News
- News & Comments
- DUBUS Content 2017