R820T register map available

raretalent BT raretalent at btinternet.com
Thu May 2 22:37:41 UTC 2013

Hello Adam,
                    Apologies  for this cold calling message out of the blue but  I have been searching the internet for sometime seeking information on the Rafael Micro R820T tuner. 

Unlike the other members listed on the SDR user groups I would like to use the tuner chip independently from the Realtek  RTL2832U chip.  Possibly, with an HF receiver tuned to 4.57MHz or connected to a 16bit ADC and capture board. As a result, I have been searching for information on the control registers within the device to control the device independently.

During my search I came across your listing shown below and would like to request if possible, a copy of the register list.  I would like to point out that this is for private use and I have no intention of making any of this data available on the web.

I would be grateful if you could consider my request.

Kind regards


Hi all,

One of the designers of the R820T tuner has recently been posting on the 
ultra-cheap-sdr group, and has kindly supplied a map of the R820T registers 
for private use only within the SDR community.  He has asked that it not be 
posted on any website, but only be forwarded around privately.

To that end, if anyone would like a copy of this spreadsheet and would be 
willing to likewise not publish it on the web, let me know off-list and I'll 
send it to you.

There's not a huge amount in the way of explanations, but it lists all the 
registers and a very brief description of what they do.

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