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Message: <blockquote data-quote="Vipersan" data-source="post: 965570" data-attributes="member: 325666">[ATTACH=full]91713[/ATTACH] So what have I discovered ..Well .. a ) in an ideal world a die cast box would be beneficial ..but since there are no commercial boxes even close to the physical size I need ..2 layers of aluminium tape is a good compromise ..with a single earth wire which can be floated from those layers to various points including the hard drive case and taped down ..b )Letting the aluminium tape 'boxed' SDRplay float and not taped to the outer metal shell of the PC is good ..You'll see from the photo this is packed to float >> away from the PC casing..c ) the shorter the usb cable the better ...a long cable can pick up stray RFi ...regardless of screening..Ideal is about 50cm..The cable has to be routed out of the case (sadly) to connect the SDRplay to a usb port..I would have prefered an internal connection but this is not possible with this Dell.d) ferrite clip around chokes are on order ..but have not yet arrived ..These will clip onto and around the usb cable to hopefull further reduce RFi ...and I will be trying a homebrew screened A-B cable when the bits arrive.In the meantime I have a non screened ...non ferrite 50cm standard cable in place ...this you can also see on one of the photos..Suffice to say they improvements on the FM radio band are substantial.I have yet to try other bands...Obviously using a localised stub antenna I _will_ pick up localised RFi ...but I'd say this is manageable..atmHere are some photos ..Showing the RFi bands at regular intervals before any of the above changes were made ...without antenna...with antenna ..Later photos of this same band with the RFi mostly managed ...again with Antenna and also without..I think you'll agree this is not half bad ..rgdsVS</blockquote>

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