Sunday, December 12, 2010

wine kooze

Keep your wine chilled
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Tuesday, November 9, 2010

Monday, November 1, 2010

Alarm on IPhone 4 + timechange (Summer -> Winter) = alarm goes off 1 hour to late

An alarm for 6am on weekdays was set and used before time change from summer till winter. On the first weekday after time change it went off at 7am.

A new alarm was made for 8:30am and it went off at 8:30am.

It sounds like a summer/winter time problem.

Does the alarms go by USA's time change? We will see monday.

Or how is it set? Doesn't look like it is set independent of summer/winter time.

Tuesday, October 26, 2010

HamGadgets

After some savings I had little to go spend on electronics. My choice fell on HamGadgets again.
I needed another picokeyer+, Since our 7 year girl has become very interested in learning morse code.

The package was shipped in the 22. I got it today. Only 4 days later.

I got enough 2N7000's so there is plenty for me to return some to Colin g6avk.

Sunday, October 17, 2010

Open tabs

Just before i loose them i would like to share some of the webpage i have open in my browser at the moment.

For a pedestrian HF setup
http://sites.google.com/site/g3xbmqrp/Home/portable

For a simple DDS setup
http://www.min.at/prinz/oe1rib/DDS/Default.htm

I was on the search of an online LC filter calculator and i found these two:
http://www.calculatoredge.com/electronics/ch%20pi%20low%20pass.htm
http://www.calculatoredge.com/electronics/bw%20tee%20low%20pass.htm

Though I was looking for these two web calculators
http://www.pronine.ca/butlf1.htm
http://www.pronine.ca/cheblf1.htm

The other day someone asked me what the different digital modes looks like in a waterfall spectrum
http://hfradio.org.uk/html/digital_modes.html

I'm currently looking for a cheap supply of 2n7000 mosfets, ft37-6 and ft37-43.
http://www.kitsandparts.com/parts.php

I'm up for trading, I have many other components in big quantities so just ask.
So just ask if there is something your looking for.

Sunday, September 12, 2010

Another weekend..

The lawn has been mowed, the hedges has been trimmed..

Tomorrow i'll have a pair of sore arms tuesday or so!

..

Tomorrow is it monday and a new work week begins.

Both our 7 year old girl and our 2 year old girl has helped me over time picking up the grass and the leftovers from the hedge.

It feels good though to be done with it.

Saturday, August 14, 2010

Just got my order from NKC electronics

It is not the last time i look to buy at NKC electronics

I got:

SOIC to DIP Adapter 28-pin (10-pack)
Item#: soic-to-dip-adapter-28pin-10
$19.99

For "regular" "old" sized SMD component like NE602's

TSSOP to DIP adapter 28-pin 0.65mm pitch (5-pack)
Item#: SMD-0028
$9.99

These I got to play with AD9834's and similar.

Might have to talk to one of the soldering ladies at work to solder them.. not that i can't but it would take way longer and be uglier.

Sunday, August 8, 2010

HTC Desire & FreeBSD

Well all went fine till I tried to mount the SD-card from my FreeBSD based laptop ..
Well off to Google for a solution and found Mount Android phone in FreeBSD [Solution]

dd if=/dev/null of=/dev/da1 count=0


It seems not to write anything, though it fices "something" down the trail so that /dev/daXs1 is being recognized as an msdosfs formatted partition and it can now be mounted and used (8

Now off to see how to get BT obex ftp to work. Or some other form for filetransfer.. scp or sftp maybe?

Sunday, July 11, 2010

ISO 8601 is a good date notation form

Today i stumbled upon the ISO 8601 date notation format. I have for a while been using the form YYYYMMDD, though the ISO 8601 says YYYY-MM-DD.

This is unifies the notation used in USA (MM/DD/YYYY) and in the rest of the world (DD/MM/YYYY).

Another nice feature is that if the ISO 8601 date notation is used in filenames they are easy to sort chronologic order.

Thursday, May 20, 2010

Android-mobile converted into 3-axis gyromonster

This needs no other words than. Watch it and be amazed.

The Electric Giraffe Project

This is an amazing project and as i know one of the tinkeres only good things can come out of it over time (8
The Electric Giraffe Project

Friday, April 30, 2010

Usefull links that I have found recently.

How to work with a Tube PA, the tune procedure

A blog that I stumbled upon, that among others describes SDR picture by picture. Very well made explanations.

Sunday, April 11, 2010

Found this tutorial on Youtube: "Circuit Board Etching"

This is a rather nice video of how to make your own PCB's

DVD Stash Box! What would you put in it?

Things that one can do with old computer hardware.


Tuesday, March 30, 2010

Ulveparkering / wolfparking

Bilka in Sønderborg now got wolfparking spaces up infront of the door. These spots are ment for families with kids. It is a neat idea.



Sunday, March 21, 2010

Not Always Right

This is the laught of my day -> "Someone stole my satellite navigation".

I don't know if it is because people doesn't understand the concept or why dialogs like this one comes up.

But I have seen similar misconceptions among newspaper journalists. That scare me!

Monday, March 1, 2010

What Hamradio is not!

The page that the title links to gives a nice description of what hamradio is not.

hamradio is as diverse as having an interest for cars, airplanes or plants. Everyone finds their own little corner within the hobby.

Saturday, February 20, 2010

Buildout cooler ..


Opposite of an buildin cooler, we are using the outdoor cooler.




It is even CO2 neutral!
Addition to any kinds of bills: 0Kroner = 0 USD.

Thursday, February 11, 2010

Frequencies that are allowed in OZ

It looks like OZ hams are not allowed to used 500KHz / 600m,
So no MEPT experimentation from OZ. The only band that is allowed here is 137KHz / 2200Km.

The title links to the bandplans for danish ham operators (in danish sorry).

It is possible to obtain a timelimited license for 5.2500 MHz - 5.4500 MHz, which is around where hams from USA has their 60m

Sunday, January 31, 2010

Centre-line tuned loop

After the daugther got a new bike (long time ago) and we recently had to move the old bike has to go to the recycle center.

Well i thought the front wheel would make a nice loop antenna.

In my search for possible options of came across:

1) "regular" top tuned and a coupling loop / gamma match.
2) G3LHZ's centre-line tuned loop with a twisted gamma match.

The first one takes that the rim is cut to fit the tuning capacitor. The second one looks better at first glance, since no cutting of the rim is needed.

Further more Mike's writes that the voltage over the tuning capacitor is lower due to this form of loops needs a higher capacitance.

In the document in CARC post, Mike talks about a 1,7m in diameter loop and 3300pf for using it on 160m. I wonder what I can get out of a 0.54m in diameter loop using centre-line tuned method?

Saturday, January 30, 2010

Talking about energy in food

As some might know my wife / xyl is from Texas.

Due to this fact we have many conversations over measurements.

One of the latest was about the energy in food items. In USA they are measured in Calories and here in Denmark the Nutrition labels states them in kj and kcal.

After many talks forth and back I found this web site:
Energy Converter

On there i found out that:
1 kilocalorie (IT) = 1 calorie (nutritional)

Where as:
1 kilocalorie (IT) = 1000 calorie (IT)

Notice that there are different "versions" of calories, a scientific and a nutritional.

Lesson learned .. second thought .. I got to think of f.ex. Oz. are used in both solid and fluid versions!

Friday, January 15, 2010

IPhone + GoodReader + cadaver

After trying one PDF reader I went on to try another one. This time:
GoodReader it was a wooping 6 DKK ~ 0.99 USD.
First impression was very good. There is a simple web interface for uploading files to the IPhone via wifi. It is simple, but good, it gets the job done.

Though it is trivial to upload a file at a time.

So I just installed the port cadaver a cli WebDAV client. Since I have used ftp clients in CLI (Command Line Interpretor) mode before it was quite simple to use to upload multiple files in one go.

This makes it very easy to organize the files.

Now I have most of the pdf's I use right in my left hand (8

Monday, January 11, 2010

Spring cleaning. (in the middle of the winter)

Just moved.

So as things are put into place they are being evaluated, to be placed on shelf etc or long time storage (The local recycle place).

I have alot of PCB's with just one or two components on that i might could use some other time.

So this evning some time was spent on desoldering some of these components to be able to discard the rest of the PCB.

A 150W gutter soldering irong works, though not for relays and things that size.

What I mainly has harvested has been switches, high voltage caps 3.5 mm female jacks.

Also got a couple of shelfs put together for a place for some of my instruments.

The main idea .. more room for usable "stuff" and get rid of the rest.

.. easy said .. hard to do ..

Thursday, January 7, 2010

Sprat-on-CD + IPhone + Aji Reader PDF + local webserver = Sprats on IPhone

I received my copy of "Sprat-on-CD" yesterday.

First thought was how to read them when away from my computer.

Second made a backup copy to an USB flash stick.

I do not own an ereader, though i do own an IPhone 3G .. think think ..
Into Appstore i went for a PDF reader that could download/fetch PDF documents from a web server.
I chose the Aji Reader PDF, mainly due it is free (8

Due to i'm running FreeBSD on my computers i had to setup a webservice, i chose cherrypy and compased a small index function.

Basicly any webserver that can produce an index and server the files can be used.

Go to "Fetch" enter the address on the webserver.

145 taps later I now have Sprat issues 1 to 140 on my IPhone to read when ever I like.

What I have learned about the Aji Reader PDF is as follows:
1) When restarting the app it starts where one last read in a PDF.
2) Zoom to prefered view, then tap once about in the middle of the screen, then tap on the unlocked lock, it will now show up af locked, this means that one can only scroll up/down even when the finger scrolling is now straight up or down. To undo do the same as when locking.

This app could also be used for datasheet and so on.