Wednesday, 20 February 2019

First geostationary amateur satellite succesful

Es'hail-2



Es’hail-2 was launched in 2018. This geostationary satellite (fixed at a distance of appr. 36.000 km from earth) carries two “Phase 4” radio transponders operating on radio amateur frequencies (2400 MHz uplink, 10450 MHz downlink). A linear transponder has a bandwidth of 250 kHz and is intended for conventional analogue radio communications. Another transponder has a 8 MHz bandwidth and is designed for experimental (DVB) amateur television.


First ham QSO’s have been realized.

E.g., G0MGX was able to receive the satellite’s signals with an (ordinary) satellite dish:








Wednesday, 6 February 2019

Sunday, 13 January 2019

Balun for long wire antenna

I would like to do some experiments with an end-fed long wire antenna (appr. 20 m. length). One needs a balun for impedance matching. For a longwire antenne a 1:9 balun is recommended.
I found a nice design on the website of PA3I: 
https://pa3i.jouwweb.nl/antenne



I have collected the components:



The ferrite core has Amidon partnumber FT157-2.
More info: http://www.amidoncorp.com/t157-2/

The box is IP55 water resistant.

Assembled it looks like this:



With 20 meter longwire attached to the balun, following first results on various frequencies (all FT-8 signals) popped up;



Monday, 31 December 2018

20 m SSTV

Good SSTV signals the last day of the year in Zuidzijde on 14.230 MHz !


Sunday, 30 December 2018

FT-8 40m

Impression of 40 m FT-8 stations that received my 40 m. signals today.
I used the FT-450 Yaesu trscvr on 5 Watts RF.



Sunday, 23 December 2018

FT-8 experiment on 6m

This morning I made an FT8 QSO with Belgium on 6 m.
I found Noel, ON4APU, on 50.313 MHz:




Off-topic: Funghi from my garden



Saturday, 17 November 2018

50 MHz WSPR

Today I received WSPR signals from Belgium on 6 m WSPR:



Off-topic:


Sunny autumn afternoon in Soest, 18 Nov 2018



Friday, 26 October 2018

PI4HAL

eQSL from PI4HAL was received today:




Off-topic:

Mauritshuis Willemstad December 2018





Sunday, 14 October 2018

DARES


This weekend I visited the National Safety day in Culemborg. Red Cross, the Navy, Army and Police showed their skills. Also the DARES was present. DARES is an abbreviation for Dutch Amateur Radio Emergency Service.

I spoke with PA3GJM, Hans, the regio coordinator of DARES in Gelderland-Zuid. He explained how, in emergency situations, communication tru VHF/UHF and Short Wave can be established.
Interesting is the communications vehicle that also contains equipment to route emergency e-mails via Winlink2000 / PACTOR protocol.

More info:  http://www.dares.nl/


Culemborg harbour

DARES communications vehicle

Sunday, 7 October 2018

FT-8

Today I received my first FT-8 signals. I installed latest version of WSJT-X and had the Yaesu FT-450 up and running for the first time since about 2 years,


 

                                                    FT-8 stations received, 21 MHz

Also the G5RV jr. antenna is doing its job after a long time of in-activity.