Search found 5 matches

by anadish
Mon Mar 05, 2018 2:04 pm
Forum: User Projects
Topic: RTL-SDR Rafael 820T2 Tuner Dongle Mini Cooler and more
Replies: 1
Views: 3004

Re: SDR Mini Cooler and more

More pictures.
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CSC_0636.JPG (177.09 KiB) Viewed 3003 times
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CSC_0634.JPG (141.01 KiB) Viewed 3003 times
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CSC_0633.JPG (48.88 KiB) Viewed 3003 times
by anadish
Mon Mar 05, 2018 2:02 pm
Forum: User Projects
Topic: RTL-SDR Rafael 820T2 Tuner Dongle Mini Cooler and more
Replies: 1
Views: 3004

RTL-SDR Rafael 820T2 Tuner Dongle Mini Cooler and more

SDRs with Rafael 820T2 tuner chip are mostly supplied by the Chinese dongle assemblers with the exposed pad un-soldered at the center of the chip's QFN package. Whereas Rafael recommends the E-pad soldered to ground. It aids heat dissipation, as well as RF functioning. The chip consumes around 180mA...
by anadish
Tue Feb 20, 2018 5:08 pm
Forum: User Projects
Topic: CML divide by 4 as a prescaler for RTL-SDR to sniff EMR even beyond 10GHz (update - does actual FM reception too)
Replies: 2
Views: 3288

Re: CML divide by 4 as a prescaler for RTL-SDR to sniff EMR even beyond 10GHz

A few more pictures. For PCB making, print at 25%.
CSC_0556.JPG
CSC_0556.JPG (57.05 KiB) Viewed 3279 times
prescaler PCB.PNG
prescaler PCB.PNG (14.41 KiB) Viewed 3279 times
CSC_0554.JPG
CSC_0554.JPG (196.79 KiB) Viewed 3279 times
by anadish
Tue Feb 20, 2018 3:37 pm
Forum: User Projects
Topic: CML divide by 4 as a prescaler for RTL-SDR to sniff EMR even beyond 10GHz (update - does actual FM reception too)
Replies: 2
Views: 3288

CML divide by 4 as a prescaler for RTL-SDR to sniff EMR even beyond 10GHz (update - does actual FM reception too)

Inspired by this https://www.changpuak.ch/electronics/FA_17GHz_PRESCALER.php prescaler, I moved on to another one http://archive.siliconchip.com.au/cms/A_107676/article.html , as I realized that the frequency divider in the first project was not to be found in India. However, 4GHz was the upper limi...