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04 November, 2006

Mobile Phone Conversion

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Several fellow hams in the Asker and Bærum district have converted Mobira (Nokia) MD50 or MD59 Talkman NMT-450 phones from 1985-1988 to the ...
16 March, 2006

Remapping of Keyer Speed Pot Range for the Elecraft K2

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I am beginning to realize that I will never be able to exceed 20-25 wpm CW speed. The speed pot of the K2 however covers from 9 - 50 wpm...
21 January, 2006

Elecraft K2: Using the KPA100 loudspeaker when the KPA100 is remoted

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When the KPA100 power amplifier is external to the K2, the KPA100 loudspeaker is unused. I wanted to use it for other rigs that need a...
09 December, 2005

25 part transmitter for the QRP Minimal Art Session

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My Minimal-Art-Session rig shown here was made for class B of the QRP-MAS competition which is in May every year. In class B the trans...
4 comments:
15 May, 2005

Adaptation of some Morse programs to Norwegian

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Nice drawing of Bencher keyer by Dutch radio amateur Dick Kraayveld, PA3ALM ( http://www.morsecode.nl/pa3alm.html ) Norwegian has thre...
15 May, 2004

QRP Antenna Tuner

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My 75 meter horizontal loop antenna is tuned by a home-built Z-match antenna tuner, a slightly modified version of the Norcal BLT (Balan...
02 August, 2003

Unleashing the LM386

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From Wikipedia Commons, author 'Samba pa ti' The LM386 must be one of the most popular audio output amplifiers among radio amat...
5 comments:
22 April, 2003

Inductance and capacitance adapters for a digital voltmeter

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The adapters have been built from the drawings in chapter 26 of the ARRL handbook for radio amateurs, 2000, using the ARRL PCB templates....