18 June 2012

RTLSDR success on 23cm

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T he RTLSDR dongle came just before a weekend, meaning I could spare half and hour playing with it. The first kitchen table test with the st...
16 June 2012

USB speed, physical vs virtual (VirtualBox)

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Pen drive directly attached to the host. W hile the DVB-T RTL USB stick is travelling towards my shack, I am trying to understand if I c...
14 June 2012

UV-3R receiver chopping

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A t last my UV-3R was subject to the receiver chopping effect that was described on the Yahoo group few months ago. On the way home I met ...
11 June 2012

R1235 bypassed

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A fter much thinking and no time to test the polyfuse solution, I opted to bypass the burned R1235 resistor in my FT817 with ... another res...
06 June 2012

Raspberry PI: I'm in

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T his morning I filled in the reservation form for a copy of Raspberry PI ARM/GNU Linux box (in other words, a small computer). One of th...
02 June 2012

Yaesu FT-8x7 CAT-to-Bluetooth dongle, a user's manual

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I have composed, in the form of an online slideshow, a user's manual for my CAT-to-Bluetooth dongle (no download, no registration req...
29 May 2012

VHF/UHF SDR from a DVB-T dongle

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M any people on Internet are talking and documenting "GNU radio" ability to create a SDR out of a USB DVB-T TV tuner. [I apologis...
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21 May 2012

Locating R1235 on FT-817

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T wo weeks ago I proposed a "play safe" procedure for testing the health FT-817's ACC port (Vcc line only). If R1235 is blo...