Topband: noise

[armin.ficza at nokia.com]

Hi Bob 

I think, there is an another way to solve this problem. I am 
just working on a SDR receiver project, using some top class 
components, like Minicircuit decoders and LT1028:
http://www.linear.com/pc/productDetail.do?navId=H0,C1,C1003,C1042,C1033,
P1362

Voltage Noise
1.1nV/rt Hz Max. at 1kHz
0.85nV/rt Hz Typ. at 1kHz
1.0nV/ rtHz Typ. at 10Hz
35nP-P Typ., 0.1Hz to 10Hz 

This IC costs around 20$.

If I succeed, will have a limited number for sale as well.

Here you can find a cheap version, and the idea, how it works actually:
http://www.nitehawk.com/sm5bsz/linuxdsp/hware/optiq.htm

Anybody using direct conversion receiver for Topband?

Br,

Armin, ZL1KMN

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