IK1ZYW Labs

What goes on at IK1ZYW laboratories, day by day.

26 January 2009

PTO, taking apart

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Sorry I kept you waiting for further pictures of the PTO. This is it, removed from the FM 88-108 car receiver. A small piston drives three c...

Heavier paddle

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I do not own a professionally made morse paddle. Or IAMBIC key, if you prefer to call it that way. I have used an ultimate low-cost ultra-po...

More 30m QRP adventures

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On Saturday, 2009-01-24, 30m were wide open in my shack. I had troubles finding a clear spot to place my CQs: up to 10130 kHz I could hear s...
23 January 2009

21st Century PTO

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I was quite puzzled when I bought a used 2005 car in 2007 and it came with a peculiar el-cheapo radio. It was an Audiola SCD-857N for which...
22 January 2009

FT817 keypad - updated circuit diagram

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A keypad user has reported a non destructive problem when using the on/off switch on the +13.8V line. It shows as a faint LED when the keypa...
16 January 2009

Breathing a LED down to zero

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F inally I got something broken to fix. Actually this time was something to improve. I helped the amateur astronomer of my optical experimen...
07 January 2009

HAM radio: childish fun?

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I can't stop thinking of this episode few days ago. Once I fed breakfast to XXYL (2y4m old) I left her playing and went into the shack. ...

Winter 30m experiments

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These past winter holidays have brought a positive spike in my on-the-air activity. After many months of HF inactivity, thanks to the availa...
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