23 August 2012

How to measure coax cable velocity factor

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A recent (2010 AD!) discussion on an Italian forum tried to answer the question: " how to measure coax cable velocity factor? " ...
09 August 2012

Raspberry Pi arrived and tested

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My RasPi from Farnell arrived 3 days after the shipping notificaton. It came with regular mail from UK. Setting it up was not so straight...
24 July 2012

Raspberry PI from Farnell

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Y esterday I received an email from Farnell stating that my RPi had been shipped (order #ORP051xxx). Since I ordered it the same day I submi...
21 July 2012

DX's EzTV668 lacks ESD protection diode too

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It is amazingly easy to open the EzTV668 RTLSDR USB dongle bought at DealExtreme: make a little pressure with a small flat screwdriver on bo...
19 July 2012

I.F.R. current

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A fter adding the tuning knob and on request of a fellow builder, I checked the IFR current. The DVM read 16mA with a LCD without backlight...
29 June 2012

Raspberry PI: ordered

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T he "invitation to order" email came one day late and I have just paid for my RasPI. Order #127xxx, despatch expected within 11 w...
27 June 2012

avreal32 and lock bits

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I feel dumb. I was expecting to see AVR's lock bits LB1 and LB2 amongst FUSES in avreal32 programmer, so I never saw that there is a ded...
22 June 2012

SDR# on a Centrino CPU

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N ot a big achievement, but I want to report that I could use the RTLSDR dongle with SDR# on a laptop running WinXP with an Intel Centrino 1...