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Showing posts from April, 2016

6m / 4m ES op Konings dag

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1e keer dit jaar voor mij   vroeg dit jaar
Rinze was op Kreta   goede keuze  gezien de winterse temperaturen hier
ijsmuts op  op Koningsdag  maar wel zon   ondanks de code oranje ...


op 4m was  SV

1.2016-04-2717:276 m Z32KFSSB592.2016-04-2717:226 m 4O4ACW5993.2016-04-2716:496 m SV4FFKkm19ljCW5594.2016-04-2716:476 m SV9/PC5CCW5995.2016-04-2716:346 m 4O7CWCW5996.2016-04-2716:336 m SV1CQNCW5597.2016-04-1007:4417 m YM3KMCW5598.2016-04-1007:3315 m VK0EKCW5999.2016-03-2719:27160 m VK0EKCW59910.2016-03-2617:4940 m VK0EKCW59911.2016-03-2617:4080 m VK0EKCW

AD9850 DDS with ARDUINO

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10 Hz  to 51.000000  MHz , steps selectable 1Hz  to 100kH or 1 Mhz

I had this AD9850 unit some time waiting to test it.
I used an ARDUINO UNO  with LCD Keypad shield
And a rotary encoder.

Many HAM 's already build receivers and tranceivers based on this fantastic AD9850 as VFO.
With this AD9850  building a rock stable VFO became a piece of cake!

The ARDUINO website shows many projects with this AD9850
But I could not find a sketch that  fitted my setup 100%.
I used the rotary encoder improved interrupt sketch as first base
by Simon Merrett / Oleg Mazurov / Nick Gammon rt Steve Spence

First only down count worked  I had  the encoder at pin 1 and 2  not 2 and 3  since those pins are  shifted 1 position on the board that tricked me.

Also the Vcc had to be connected to this encoder.
Only enabling the internal pull-up R's on the pins 2 and 3 showed missing pulses.

Had to adapt some things
The main loop was only a 1 time loop in fact in the original sketch

The LCD Keypad shield use…

VK0EK last call

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2016-04-10 08:45:40Z: Today the winds are high, but we've had some sunshine this afternoon (and graupel/hail this morning). We still have a couple radios on the air, but much of the crew is removing antennas from the lake near our camp. 
Weather is partly cloudy, with a temperature of 5 C, strong north winds and high surf, and a pressure of 982 mbar.

21.034kHz they still run huge pile  not that strong here  569 at most but after some time it was bingo. Not heard anymore at 28 but at 12m good signal on the 30 60 80 dipole no 12m ant
my vote for best dx-pedition  2016although I did not get many slots
28MHz would be nice  but since I heard them that one time Easter Monday 28 was complete closed
WSPR 28 no! decodes for many days  as if antenna was unplugged

they will reach over 75000 QSO  soon I wonder what logger they use.
With N1MM+   here i get overflow error when try to open my general log of 70.000 + QSO

Sunday I was a it contesting Yuri Gargarin cup heard FT4JA 579 at 14.038 qsx…
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af en toe behoorlijke tropo afstanden op 70MHz

op HF is er niet veel te beleven 10m is al weken dicht
160m  alleen FT4JA  soms sterk maar dat is een deaf-peditie
Waarom helemaal naar een eiland gaan met dikke PA's maar dove ontvangst.
Geeft alleen maar QRM en contra ham spirit.
Dan schat ik de VK0EK om's veel hoger in.
Maar ik heb ook geen andere banden meer geprobeerd na de pogingen op 160m
Na een uur roepen op een station dat op 160m tegen 599 binnenkomt en geen enkele reactie
Dan vraag je je toch af  wat ben ik aan het doen?  de stomme tegen de dove. Dat is niet radio hobby.
Vergeet deze Frans Italiaanse deaf-peditie snel.

De PACC 2016  voorlopig  resultaat ziet er goed uit. Nog steeds niet verslagen.
en nog weer een award erbij geeft de ARRL alleen 1e  plekken uit?