What's New

 

 

  News and Updates of this Homepage  
Neuigkeiten und Aktualisierungen
dieser Homepage 

 

Date

Update

Directory

May 3rd
2024

MITEQ interdigital bandpass filter FIL-1400-4012 optimized for 1420MHz radioastronomy observations

Ham Downloads

May 2nd
2024

L-band bandpass filter from RLC retuned to 1690MHz for weather satellite downlink

Ham Downloads

May 1st
2024

Added a new section with surplus items which I offer for private sale  

Surplus - For Sale

May 1st
2024

Evaluation of an unknown unidirectional coupler for the 2m up to 13cm bands

Ham Downloads

April 30th 2024

Unknown L-Band dipole feed

Ham Downloads

April 29th 2024

LC lowpass filter for the supply line of a noise source

Ham Downloads

April 28th 2024

Analysis of an L-Band 5-way Wilkinson Splitter / Combiner

Ham Downloads

April 27th
2024

Table with the most important parameters of various coaxial cables

Ham Downloads

27. April
2024

Übersicht der wichtigsten Daten von zahlreichen Koaxialkabeln

Ham Downloads

April 26th 2024

Shielded chamber for noise figure measurements

Ham Downloads

April 25th 2024

Analysis of the Bendix TFC-6 circulator

Ham Downloads

April 24th 2024

Analysis of the Dressler RSM 2000 Bias-T with variable attenuator

Ham Downloads

April 23rd 2024

Analysis of a Chinese 10Mhz - 10GHZ Bias-T

Ham Downloads

April 22nd 2024

INMARSAT TT3008D small dish antenna analysis and evaluation

Ham Downloads

21. April 2024

PTT fuer die SDR-Console am USB-Port des PCs

Ham Downloads

April 20th 2024

External display for ICOM IC-705 supporting transverter operations

Ham Downloads

April 19th 2024

Analysis of a Chinese 5-6000Mhz amplifier module

Ham Downloads

April 18th
2024

Description of wideband amplifier MITEQ AMF-2F-005010-15-10P-L

Ham Downloads

April 17th 2024

Analysis of an unknown Bias-T for the HF-Bands

Ham Downloads

April 16th 2024

Controlling the R&S URVD/NRVD Power Meter by LabView

Ham Downloads

April 15th 2024

Analysis of a 1.3GHz 20W amplifier from China

Ham Downloads

April 14th 2024

Transmit-Receive-Switch with Attenuator for IF frequencies of 145MHz and 435MHz

Ham Downloads

April 13th 2024

Analysis of a 2.4GHz 20W amplifier from JDElektronik DJ4ZZ

Ham Downloads

13. April 2024

Analyse eines 2,4GHz 20W Verstärkers von JDElektronik DJ4ZZ

Ham Downloads

April 12th 2024

A 4 pole bandpass filter for the 70cm band recycled from a UHF duplexer

Ham Downloads

April 11th 2024

AMSAT-DL proposal to ESA for a Geostationary Microwave Ham Radio Payload

Ham Downloads

April 10th 2024

Fullduplex operation in FT8 und FT4 via QO-100

Ham Downloads

10. April 2024

Mit Windows 7/10/11 Rechner auf die Festplatte des R&S FSIQ (mit Windows NT) zugreifen

Ham Downloads

April 9th 2024

Problems with measurement of a 5.7GHz LNA

Ham Downloads

April 8th 2024

Low cost DIY digital readout for an X-Y-axis table

Ham Downloads

April 7th 2024

Wideband Amplifier MITEQ AMF-5S-122132-12-13P

Ham Downloads

April 6th 2024

Wideband Amplifier MITEQ AFS3-02000400-06-10P-4

Ham Downloads

April 5th 2024

Analysis of an unknown variable attenuator

Ham Downloads

April 4th 2024

Analysis of a 2.4GHz 1.3W amplifier from Phillip Prinz DL2AM

Ham Downloads

April 3rd 2024

Analysis of a 2.4GHz 900mW amplifier from ID-Elektronik

Ham Downloads

April 2nd 2024

Building some new Bias-Ts

Ham Downloads

April 1st 2024

1.3GHz 2W driver amplifier with M67715

Ham Downloads

15. Nov. 2023

Internationale Amateurfunkfreunde trafen sich am Rande der HamRadio 2023 in Friedrichshafen zum 3. QO-100 Usermeeting

Ham Downloads

9. Sept. 2023

Remote VSWR & Power Meter -
Praesentation bei der 68. UKW-Tagung in Weinheim 2023

Ham Downloads

9. Sept. 2023

Remote VSWR & Power Meter -
Artikel im Tagungsband der 68. UKW-Tagung in Weinheim 2023

Ham Downloads

Sept. 9th 2023

Remote VSWR & Power Meter -
Presentation at 68
th UKW-Tagung Weinheim/Germany 2023

Ham Downloads

Sept. 9th 2023

Remote VSWR & Power Meter -
Paper in the proceedings of the 68
th UKW-Tagung Weinheim/Germany 2023

Ham Downloads

April 26th 2023

DC overvoltage protection with BTS555

Ham Downloads

28. Feb.
2023

Restaurierung einer Aktivantenne R&S HE003

Ham Downloads

Mar.24th 2023

How to become QRV on the QO-100 NB transponder -
Presentation at meeting of DARC OV A05 in Freiburg/Germany

Ham Downloads

March 8th
2023

Successfull ARISS-Kontakt of Gymnasium Christian-Ernestinum in Bayreuth/Germany with Koichi Wakata KI5TMN in the ISS

ARISS

20. Feb.
2023

Vullduplex-Betrieb in FT8 und FT4 über QO-100

Ham Downloads

Feb. 11th 2023

How to become QRV on the QO-100 NB transponder -
Presentation at the Dreilaender Sysop Meeting 2023 in Engen/Germany

Ham Downloads

Feb. 9th 2023

Excellent isolator for the 13cm band of unknown type and brand

Ham Downloads

Feb. 5th 2023

Retuning Circulator TELEDYNE MICROWAVE C-1S13T-3 to 868MHz

Ham Downloads

Feb. 4th
2023

Broadband CATV amplifier based on MHW5142A

Ham Downloads

31. Jan.
2023

Amateurfunkkontakt zur Internationalen Raumstation ISS - Raumfahrttage 2022 in Morgenröthe-Rautenkranz

Ham Downloads

31. Jan.
2023

Portabelbetrieb über QO-100 - dem ersten geostationärem Amateurfunksatellit - MIGR-Treffen 2022 Morgenröthe-Rautenkranz

Ham Downloads

Jan. 30th
2023

Artificial Mains Network (AMN/LISN) with isolating variable ratio transformer

Ham Downloads

27. Jan.
2023

8.4 GHz LHCP Erreger für einen Parabolspiegel

Ham Downloads

Jan. 27th
2023

8.4 GHz LHCP Dish Feed

Ham Downloads

Jan. 22nd
2023

ALCATEL FERROCOM 20B1-31 circulator for 1700-2300MHz

Ham Downloads

Jan. 15th 2023

Circulator Kathrein France CHF 05080 for the 70cm band

Ham Downloads

Dec. 18th
2022

Update of page with historical sound tracks of various space objects - Added recording of HO-113, NO-116, RS14S and HSU-Sat 1 provided by DL7NDR

Sounds from Space

Dec. 18th
2022

Update of page with historical sound tracks of various space objects - Added recording of Falconsat-3, Geoscan-Edelveis and FO-188

Sounds from Space

Nov. 29th
2022

Update of page with historical sound tracks of various space objects - Added recording of Venus, Mars and Mercury

Sounds from Space

Nov. 29th
2022

Radio Amateurs who are also a member of the NexStar Yahoo group

Astro Downloads

Nov. 29th
2022

Update of page with historical sound tracks of various space objects - Added recording of CO-58 provided by Michael Hoerenberg

Sounds from Space

Nov. 28th
2022

Update of page with historical sound tracks of various space objects - Added recording of ARDUIQUBE/DIY provided by Michael Hoerenberg

Sounds from Space

Nov. 26th
2022

Update of page with historical sound tracks of various space objects - Added recording of CAS-6 and CAS-9 provided by Michael Hoerenberg

Sounds from Space

Nov. 22nd
2022

Update of page with historical sound tracks of various space objects - Added recording of C-SIM provided by DL7NDR

Sounds from Space

Nov. 20th
2022

Update of page with historical sound tracks of various space objects - Added recording of UWE-4, TY-4, Suomi100, Snuglite, MXSat-1, MOVE-II, FMN-1, D-Star One Sparrow and D-Star-One iSat provided by DL7NDR

Sounds from Space

Oct. 25th 2022

2.4GHz 200W Circulator based on Skyworks SKYFR-000827

Ham Downloads

21. Okt.
2022

Untersuchungen einer Peltier-Kuehlung fuer eine Leistungsendstufe

Ham Downloads

Oct. 16th 2022

70cm High Power Circulator by retuning VALVO Band V Circulator

Ham Downloads

19. Sept.
2022

Anschluss des ADALM Pluto SDRs an ein lokales Netzwerk (LAN)

Ham Downloads

Sept. 19th
2022

Connecting the ADALM Pluto SDR to the LAN

Ham Downloads

10. Sept.
2022

Portabelstation für QO-100 auf Basis eines ADALM Pluto -
Vortrag auf UKW-Tagung 2022 in Weinheim

Ham Downloads

10. Sept.
2022

Amateurfunk ueber QO-100 von DP0GVN in der Antarktis -
Vortrag auf UKW-Tagung 2022 in Weinheim

Ham Downloads

Sep. 4th 2022

2400MHz 40W Power Amplifier with MW7IC2400

Ham Downloads

30. August 2022

2400MHz Power Amplifier 230W

Ham Downloads

Aug. 9th 2022

Anritsu Preamplifier MA8610A

Ham Downloads

Aug. 9th 2022

70cm low noise preamplifier P432VDG from Advanced Receiver Research

Ham Downloads

Aug. 8th 2022

Wideband Amplifier MITEQ AFS2-04001800-50-8P-2

Ham Downloads

Aug. 8th 2022

Wideband Amplifier MITEQ AMF-5F-06001800-15-10P-E

Ham Downloads

Aug. 7th 2022

Unknown 13cm Circulator

Ham Downloads

July 28th 2022

Wideband Amplifier MITEQ AMF-3F-00820096-14-30P

Ham Downloads

July 26th
2022

Update of page with historical sound tracks of various space objects - Added recording of a random contact of NA1SS in the ISS and DD1US

Sounds from Space

26. Juli
2022

Ein Filter für Satellitenbetrieb im Mode-J

Ham Downloads

24. Juli
2022

Netznachbildung mit Regel- und Trenntrafo

Ham Downloads

June 10th
2022

ARISS contact with German Astronaut Matthias Maurer

Ham Downloads

June 10th
2022

Ham Radio via QO-100 from DP0GVN in Antarctica

Ham Downloads

5. Juni
2022

Amateurfunk ueber QO-100 von DP0GVN in der Antarktis

Ham Downloads

June 4th
2022

HP Server Power Supply HP-HSTNS-PL14 modified for Ham Radio use

Ham Downloads

June 2nd 2022

2-6 GHz Isolator QUEST SM2060T02 characterized at 2.4GHz

Ham Downloads

June 2nd
2022

Improvement of receiver SNR as a function of its image rejection ratio

Ham Downloads

May 26th
2022

Manual for the AMSAT-DL Highspeed Multimedia Modem Software from Kurt DJ0ABR

Ham Downloads

May 24th
2022

EME UHF-LVR Power and SWR Meter 430-2400MHz

Ham Downloads

May 3rd
2022

A 868MHz bandpass filter K&L Microwave 10B120-865/530-0

Ham Downloads

March 31st
2022

A 868MHz bandpass filter for LORAWAN

Ham Downloads

March 6th
2022

The WellGood active loop antenna tested with the Airspy HF+ SDR

Ham Downloads

5. Maerz
2022

Erfolgreicher ARISS-Kontakt des ERASMUS Gymnasiums in Denzlingen und des Goethe Gymnasiums in Freiburg mit Matthias Maurer KI5KFH in der ISS - Video aus der ISS hinzugefügt

ARISS

22. Feb.
2022

Vortrag gehalten direkt vor dem ARISS Kontakt mit Matthias Maurer in Denzlingen

Ham Downloads

Feb. 17th 2022

Update of page with historical sound tracks of various space objects - Added audio recording of ARISS contact of Matthias Maurer 

ARISS

Feb. 12th
2021

Update of page with historical sound tracks of various space objects - Added recording of OPUSAT-2/Hirogari received by Patrick Hajagos

Sounds from Space

Feb. 6th
2022

Update of page with historical sound tracks of various space objects - Added audio recording of HO-113 received by Branko 9A3ST 

Sounds from Space

Feb. 4th 2022

Update of page with historical sound tracks of various space objects - Added audio recording of ARISS contact of Matthias Maurer 

ARISS

Jan. 23rd 2022

Wideband Amplifier MITEQ AMF-3F-005010-10-20P-ITC

Ham Downloads

Jan. 22nd 2022

Unknown 1.9-2.3GHz Isolator

Ham Downloads

Jan. 8th
2022

A 35MHz-4400MHz RF Signal Generator based on an ADF4351 synthesizer and a PE43702 digital step attenuator

Ham Downloads

Jan. 1st
2022

2400MHz Wilkinson power splitter/combiner

Ham Downloads

31. Dez.
2021

Ein kompakter QO-100 Transceiver basierend auf einem "ADALM Pluto SDR", der "AMSAT-DL 6W PA" und der "QO-100 LNB & Supply & Clock" Baugruppe von DJ0ABR

Ham Downloads

Dec. 31st
2021

Comparison table signal generator phase noise

Ham Downloads

Dec. 21st 2021

Isolator 1500-3000 MHz TMT H3930 for the 13cm band

Ham Downloads

Dec. 21st 2021

Update of page with historical sound tracks of various space objects - Added audio recording of 3rd ARISS contact of Matthias Maurer received by AMSAT-DL SatNOGS station DK0SB 

Sounds from Space

Dec 19th 2021

Isolator AEROTEK E60-1L1FM for the 13cm band

Ham Downloads

Dec. 16th
2021

Update of page with historical sound tracks of various space objects - Added audio recording of 3rd ARISS contact of Matthias Maurer received by Matthias DD1US 

Sounds from Space

Dec. 13th
2021

Update of page with historical sound tracks of various space objects - Added audio recording of 2nd ARISS contact of Matthias Maurer received by Matthias DD1US 

Sounds from Space

Dec. 12th
2021

Update of page with historical sound tracks of various space objects - Added audio recording of contact between Alex KR1ST and NA1SS 

Sounds from Space

Dec. 10th
2021

Update of page with historical sound tracks of various space objects - Added audio recording of 1st ARISS contact of Matthias Maurer received by Matthias DD1US 

Sounds from Space

Dec. 10th
2021

Update of page with historical sound tracks of various space objects - Added audio recording of special transmission of PCSat in memoriam to OSCAR-1 and Marconi received by Alex KR1ST 

Sounds from Space

Nov 24th 2021

Circulator SMT 1CY63 SMC1530 for the 13cm band

Ham Downloads

Oct 14th 2021

S-Band Isolator Western Microwave Model ICS-3113

Ham Downloads

August 5th
2021

Update of page with historical sound tracks of various space objects - Added audio recording of SMOG-1 received by Bence Szabo 

Sounds from Space

July 23rd 2021

HRPT reception using an Airspy R2 and Odroid running Spyserver

Ham Downloads

July 21st 2021

20dB Power Attenuator Aeroflex Weinschel Model 6464-1

Ham Downloads

July 19th
2021

Update of page with historical sound tracks of various space objects - Added audio recording of a school contact via QO-100 of students of Goethe-Gymnasium Freiburg / Germany with DP0GVN in Antarctica

Sounds from Space

July 12th
2021

Update of page with historical sound tracks of various space objects - Added audio recording of a school contact via QO-100 of students of Erasmus-Gymnasium Denzlingen / Germany with DP0GVN in Antarctica

Sounds from Space

June 23rd 2021

Update of page with historical sound tracks of various space objects - Added recording received from MIRSAT-1 by DD1US

Sounds from Space

June 14th 2021

S-band Isolator UTE Microwave Inc. CT-3240 OT

Ham Downloads

June 14th 2021

S-band Isolator Microwave Associates 7K948

Ham Downloads

June 6th 2021

Update of page with historical sound tracks of various space objects - Added recording received from AMICALSAT in S-band by DD1US

Sounds from Space

3. Juni
2021

Dualband Feed für EsHail-2

Ham Downloads

June 3rd
2021

Dualband Feed for EsHail-2

Ham Downloads

May 20th 2021

Update of page with historical sound tracks of various space objects - Added recording received from Quetzal-1 by DD1US

Sounds from Space

20. Mai
2021

6 kreisiges L-Band Bandpassfilter neu abgeglichen auf 1700 MHz

Ham Downloads

May 17th 2021

Wideband Amplifier MITEQ AMF-4S-071770-08-13P

Ham Downloads

May 17th
2021

INMARSAT antenna system analysis and evaluation

Ham Downloads

May 14th 2021

Update of page with historical sound tracks of various space objects - Added recording received from DIY-1 aka DO-111 by Gustavo LW2DTZ

Sounds from Space

May 14th
2021

What to do if XHRPT is no more running?

Ham Downloads

12. Mai
2021

Neues Gehaeuse fuer de AMSAT-DL Transverter

Ham Downloads

May 9th
2021

Characterization of the LNB Bias-T and reference injection board by G0MJW

Ham Downloads

May 5th
2021

2 Watt Chinese Amplifier module for 40-1200 MHz

Ham Downloads

April 28th
2021

2.4 GHz 6W PA with 46dB gain for operation via QO-100 especially with SDRs

Ham Downloads

28. April
2021

2.4 GHz 6W PA fuer QO-100 mit 46dB Verstaerkung fuer SDRs

Ham Downloads

April 28th
2021

Evaluation of a QFH-antenna-kit for L-Band (1.6 - 1.7 GHz)

Ham Downloads

April 25th
2021

Dual dipole linear feed for 1690 MHz to receive EWS-G1

Ham Downloads

April 25th
2021

1 Watt Chinese Amplifier module for 100-1300 MHz

Ham Downloads

April 6th 2021

Update of page with historical sound tracks of various space objects - Added picture received from EWS-G1 (ex GOES-13) by Matthias DD1US

Sounds from Space

April. 3rd 2021

Wideband Amplifier AVANTEK UT84-1915 10-500 MHz

Ham Downloads

April. 3rd 2021

Wideband Amplifier MITEQ AFS3-05200600-07-10P-4

Ham Downloads


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