Icom Pcr1000 Wideband Reciever Drm Conversion Manual
Here you can view all the pages of manual Icom Pcr1000 Wideband Reciever Drm Conversion Manual. The Icom manuals for Communications receiver are available online for free. You can easily download all the documents as PDF.
Page 1
Modifications of an Icom PCR1000 For DRM Reception Author G Dobson Date: 15 February 2003
Page 2
Introduction The Icom PCR 1000 is a software-based receiver that is ideally suited to conversion for DRM reception with the minimum of modification to the existing circuitry. The Icom PCR 1000 has been successfully modified to receive DRM signals using the Fraunhofer DRM software distributed via the www.drm.org website. The modification makes use of the universal downconverter available from www.sat-schneider.de website. When tested using a DRM modulator the receiver yielded results up to...
Page 3
Setting Up The standard DRM signal used for HF broadcasting has a bandwidth of 10kHz therefore the IF filter is set to 15kHz and AM modulation on the receiver PC interface. Note: the 12kHz output is an inverted spectrum of the original signal therefore the DRM software receiver will only decode this if the ‘Inverted Spectrum’ is selected in the Setup menu: To set the 12kHz frequency use a known stable frequency source; a standard broadcast will do and tune the carrier to the centre of the DRM...
Page 4
Page 5
Board Layout 1 2 3 4
Page 6
Board Layout & Circuit Details
1. 12kHz output connection
Coaxial cable inner connected here
Screen unconnected
Switch S1 in the speaker position
2. Power Connection
Pin 3: switched DC line
Connect Here
S1
Page 7
Board Layout & Circuit Details 3. 450kHz to 12kHz Downconverter Board earthed with pins through plated holes, it is not recommended to enlarge holes due to proximity of layered track. 4. RF Connection Coaxial cable inner connected to plated through hole Screen unconnected