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Re: LF: 100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner Receiver DIY KIT

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Subject: Re: LF: 100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner Receiver DIY KITS w U/V antenna
From: "Graham" <[email protected]>
Date: Mon, 2 Jun 2014 01:20:05 +0100
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Dynamic  range  or  transient  recovery ?
 
This  seems  to  show the  noise floor  in the  -90 area  , DSP  is never  mentioned in these  dynamic  range  adverts  , designed   to  link   large  db  range  to  large  amounts of  $$  , post  processing , produces  ranges  far  greater  than the   basic  bit  count , besides  if you  Tx into  it  , its only  a  £15  fizz not  $1000  fut
 
Unlike  the  simple £5  ones of  course ,which  have  2  lives  , one  as  24  to  1700 MHz   Rx , then  , when you  destroy   the  front  end  ,  a blob of  solder , and you  have a  dc-20 MHz  sdr    add  a  little  gain from a  mini whip  and  you  ready  for  winter
 
 
73-G,
 

From: DK7FC
Sent: Thursday, May 29, 2014 9:45 PM
Subject: Re: LF: 100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner Receiver DIY KITS w U/V antenna

G..

This is all useless unless the device has a sufficient DYNAMIC RANGE, which should be at least 80 dB, better 100 dB, for LF here in a 2000 km radius to DCF39 /HGA22. And this is most unlikely...
So, another nice cheap chinese game to play with, but nothing serious...

73, Stefan

Am 29.05.2014 20:41, schrieb Graham:
All
 
Just  noticed  this  in the  sdr-sharp   group 
 
Cheap SDR , looks to  work  , directly  on LF and MF ~~  £15
 
extravagant, at    3  times  !  more  than a  normal SDR
 
73-G,
 
EBAY Item number:121339945340
 
100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner Receiver DIY KITS w U/V antenna
 
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