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60 m band

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As a result of a request from VERON ("Vereniging voor Experimenteel Radio Onderzoek Nederland") to "Agentschap Telecom", in the Netherlands there is a chance that part of the 60 m band (5250 - 5450 kHz) comes available for experiments in the near future. This band, located between 40 and 80 m, is very interesting to do (QRP) experiments.
Although the operating frequency is below 10 MHz, the common voice mode used in the 5 MHz band is USB.

In advance of the release of the bandsegment I thought about a 5 MHz transverter. When using a 21 MHz transceiver, with a 16 MHz local oscillator, a transverter could look similar to the design shown below.



Collector items

DIY frequency counter

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There is no excuse anymore not to provide your receiver or transmitter with a frequency counter.
For 6 euro's I built a counter which measures frequencies from 1 Hz till 50 MHz.
I ordered the "Do It Yourself" kit here:

http://www.banggood.com/buy/Sku184055.html

The counter can also be used as crystal tester.

The counter is designed around a PIC 16F628 that also contains a table with most used IF frequencies which you can add or substract from the measured frequency.

Very nice design with big LED displays !


Kit parts

Half way


                                 The counter works ! 16 MHz X-tal here under test


Close look with 4 MHz X-tal under test

Encounter with Aeronautical Mobile station

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Yesterdag, August 5, I made a nice radio contact via the repeater PI3UTR (145.575 MHz). With my UV-5R porto I had a QSO with Gerrit, PA0GJC/AM, who was transmitting from a small piston engine driven aircraft. At the moment of our contact he flew above the Dutch coast near Noordwijk heading for Rotterdam-The Hague airport.
I hope Gerrit acknowledges the radio contact by eQSL.


KT-8900 VHF/UHF transceiver

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If you are looking for a small, low budget, VHF/UHF transceiver the KT-8900 from manufacturer QYT from China might be your choice.
For under $100 you are the owner of this FM mobile transceiver with a weight of only 400 grams.
It has a frequency range for VHF from 136 to 174MHz and for UHF from 400 to 480MHz.
Transmitter output power is 25W in the VHF range and 20W for UHF operation.

http://www.ebay.com/itm/QYT-KT-8900-Mobile-Radio-Double-Transceiver-For-Car-VHF-UHF-136-174-400-480MHz-/252081794687?hash=item3ab13eee7f:g:d4kAAOSwHnFV6vEk


MARS mod for FT-450

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There is a way of extending the TX frequency range of the FT-450 transceiver. The so called “MARS” (“Military Affiliate Radio System”) modification provides out-of-the band operation of the transceiver. You can operate anywhere within the range 1.8-50 MHz after the transceiver has been modified.

The modification is simple. Just remove jumper JP4002 on the control pcb and make some settings. A description of the mod can be found here:
http://www.santerweb.net/wp-content/uploads/2013/01/MARS-Mod-for-FT-450.pdf

YouTube shows the instructions as well. For example this one for the FT-450D:
https://www.youtube.com/watch?v=u8kqyekwPxc

Example of out-of-band operation:


Jumper to be removed:

It took me some courage to open the transceiver and do the mod, but in fact it turned out to be rather simple.





JT beaconing on HF

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JT65 is an excellent mode for QRP experiments on HF. This weekend I did some short trials with this mode on 5.35 MHz with my "MARS"-modified FT450.
My 5 Watt JT65 beacon signals were captured by the PSK reporter website:
https://pskreporter.info/pskmap.html

I was inspired by Bas, PE4BAS to activate the beaconing mode in JT65 instead of WSPR:
 http://pe4bas.blogspot.nl/2015/12/beaconing-with-jt-modes.html
                                      First JT65 beaconing attempt January 2, 2016





                                      WSJT-X screen during beaconing

And.. heard by DP1POL, Antartica, distance 13.687 km with 5 Watts on 14 MHz:




Results of JT9 beaconing (14.078 MHz) during 1 hour on 20 m, January 3-2016,  were not too bad:



eQSL from Toscane

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IK5ZUL, Giancarlo, confirmed our 4m QSO  made July 2012:



Betelgeuse

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Betelgeuse is the ninth-brightest star in the night sky and second-brightest in the constellation Orion. The distance to us is estimated at 640 lightyears. 

It is a first magnitude star and with the bare eye you can see it is reddish. The star's name is derived from the Arabic Ibt al-Jauza, meaning "the hand of Orion". 

I managed to make a photo of Betelgeuse ("Betelgeuze" in Dutch) early this month with my Canon1000D. An exposure time of 12 seconds was good enough to capture the red supergiant (30 times the mass of the sun).





It is funny to realize that the light that Betelgeuse emitted in the year 1376 arrived in 2016 on earth. In 1376, Yusuf III, Sultan of Granada was born.





January 2013 I made this photo of Orion. Brightest star Rigel is found in the right hand lower corner.

eQSL from Albania

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This week I received my first eQSL from Albania from a digimode QSO I had Augustus 2006 with Dimitri. The callsign of Dimitri is ZA/IW2JOP.

                                  eQSL from ZA/IW2JOP
                                                      Albanian scenery

145 MHz transverter

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I found an interesting article in Funk magazine from May 1999.
It describes a 28 MHz to 145 MHz transverter.
Since I would like to use SSB modulation on 2 meter I am considering to make a transverter based on the schematic shown here:


My Yaesu FT450 can be used for the 28 MHz Intermediate Frequency processing.
Then all modulations (AM, FM, SSB, CW, digimodes) will come available.

I still have a power module M57719 (145 - 175 MHz) from Mitsubishi waiting to be used; this module can be used to boost the RF power of the transverter to a level of 14 Watts although I am not sure whether the power module can handle AM and SSB signals.

Jupiter

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Last Wednesday evening there was a micromoon in a clear sky. A good opportunity to make some photoos. I found Jupiter in the constellation Lion.


                                                        Constellation Lion


Jupiter is the large dot left from the middle, the star Regulus (a blue giant) is on the right

The picture was taken from the 'silence area' near Weipoort. With an exposure time of 8 seconds and the light from the micro moon the area was captured:



Some amateur astronomers make beautiful pictures from the planets. For example Richard Bosman: http://www.astrofotografie.nl/index.htm
He made this nice photoo from Jupiter:









First 2m SSB QSO

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First 2m SSB QSO realized with homemade transverter (See my blogspot article April 23)
Henk, PE0HZD replied on my request to make an USB QSO on  144.550 MHz.
Allthough our station distance (Zoetermeer Buytenwegh .. Oosterheem) is about 5 km´s it is worth to mention it..



47 Amps Power Supply

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Henny, PA3HK, had some used Hewlett Packard Power Supplies for sale. Yesterday I picked up one. It is a rather small unit (27 x 6 x 6 cm) and is capable of delivering 47 Amps (!) at 12 Vdc.
I made the small modifications to get it to work (3 jumpers installed and a 27 ohms resistor in the power supply of the fan) and now the unit runs fine.

I intend to use it for the 145 MHz transverter discussed earlier.


Zuidzijde

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Picture of our next QTH: Zuidzijde on the island of Goeree-Overflakkee:



View on the harbour of "Stad aan het Haringvliet", a village about 8 km from Zuidzijde:


Astra3

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I do not have access to hi-speed data links such as fibre optics ("glasvezel") in my new QTH near Den Bommel at Goeree-Overflakkee. 6 weeks without TV was not that difficult, but it would be nice to see some moving pictures now and then.

I discovered that people in the neighbourhood use satellites to receive TV transmissions.

CanalDigital is a popular satellite TV-provider. I bought a satellite dish and satellite receiver from them. After installing the satellite dish and programming the receiver, now I am able to receive about 300 stations from which a lot transmit in High Definition (HDTV).

In order to receive the Astra3 satellite, elevation of the dish is 29.5 degrees and azimuth is 23.5 degrees east. 15 meter coaxial low loss cable connects the dual LNB to the M7 receiver.

Satellite dish installed

Astra3  (at 23.5 East) receive parameters





USB Microscope

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In order to be able to do visual inspections of PCB’s or components I normally use a magnifier glass. Where the magnifier glass offers a magnification of 5X, a low-cost USB microscope can give you 20..500X.
The USB microscope I ordered for about 15 euro gives interesting results. It contains 8 white LEDs that illuminate the object to be investigated from above. The focus range and magnification can be adjusted.  LED Light intensity can be changed. It really turned out to be a plug-and-play device. Plug in the USB connector, install the software and enjoy the pictures (and even moving images). Great fun.

USB Microscope set-up and PCB:

uBITX

Radiomuseum De Stove in Achthuizen

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I found that only a few km’s away from where I live, there is a tiny radiomuseum called "De Stove" in the town of Achthuizen. Owner and builder Jan Dekkers has collected tube radios for many years. In his collection one can find one- and two-valve (‘lamp’) radios, lots of Philips tube radios, home built devices and even a small AM transmitter. The art deco interior and nostalgic decoration of the museum takes you back in time.


The address of the museum is Achthuizensedijk 12, Achthuizen (The Netherlands). Opening times are 13:00-16:00 hr. each Saturday afternoon.

Interior radiomuseum "De Stove"

Founder Jan Dekkers

Medium Wave receiver

Attic of the museum

 Home built 2-valve radio


 Home built AM transmitter

Collection Erres radios



Achthuizen (Goeree-Overflakkee)

Greeting from Port Elizabeth

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Just received a funny eQSL-card from Barry ZS2EZ in South Africa (Port Elizabeth).
QSO was from 2011 on 28 MHz (RTTY).




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