Re: [IRCA] [NRC-AM] Reviewing SDR DX
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Re: [IRCA] [NRC-AM] Reviewing SDR DX

Best advice I've got so far was an off-list reply that said:
Spent less time writing to, and reading responses from e-mail lists devoted to your hobbies. 

:-)
Russ's is a close second. SDR's may simply be too much of a good thing. I remember a few years ago when I used "Total Recorder" to record TOH ID's on a single channel. I reviewed these during my half hour long commute to work in the morning, and again while driving home in the evening. Even then, I often couldn't get through an entire night's recordings.
SDR's have just magnified the problem. Plus my SDR-IQ is a great, but not quite the performer that my old Drake R8-B was. And it's difficult to use an SDR with a phaser, because of the small latency issues. It makes it difficult to adjust for the best null. 

73,

Les N1LF



On 1/11/2014 11:18 AM, Russ Edmunds wrote:

So far, despite the obvious temptation, my strategy has been to resist getting an SDR.

:-}

Russ Edmunds
15 mi NNW of Philadelphia
Grid FN20id
<wb2bjh@xxxxxxxxx>

AM:  Modified Sony ICF 2010's barefoot
FM: Yamaha T-80 & T-85, each w/ Conrad RDS Decoder;
Onkyo T-450RDS; Tecsun PL-310 ( 2);
modified Sony ICF2010 w/APS9B @ 15';
Grundig G8 w/whip; modified Sony ICF2010 w/whip

--------------------------------------------
On Sat, 1/11/14, Les Rayburn <les@xxxxxxxxxxxxxxxx> wrote:

  Subject: [NRC-AM] Reviewing SDR DX
  To: "am@xxxxxxxxxxx" <am@xxxxxxxxxxx>, "irca@xxxxxxxxxxxxxxxx" <irca@xxxxxxxxxxxxxxxx>
  Date: Saturday, January 11, 2014, 12:02 PM
I'm curious to hear how other DX'ers 
  tackle "data management" when it
  comes to the use of I/Q recordings from SDR receivers. My
  SDR-IQ allows
  me to record 192 KHz of bandwidth, and using HDSDR software,
  I've
  started recording TOH periods overnight. I record about four
  minutes per
  hour, starting at local sunset and continuing through
  sunrise.
This provides a total of 19 MW channels to be reviewed per 
  hour,
  Recording for 4 minutes over a ten hour period, leaves me
  with 760
  minutes of data to be reviewed daily. Some channels are
  nearly
  impossible to find new ones on, so these can be reviewed
  quickly,
  checking only for unusual conditions. But it's still a
  massive amount of
  data.
Since starting this just a few days ago, I've already 
  deleted days of
  recordings, unchecked, simply because there is no practical
  way to
  review it all. Perseus owners would have an even bigger
  issue, due to
  the much wider bandwidth that can be recorded. The entire AM
  band for
  instance!
What strategies have other DX'ers found successful for 
  managing the
  data? I've considered recording just the sunrise/sunset
  periods, or
  waiting for a night with unusual conditions to record TOH ID
  periods
  only, or even simply recording for a week in mid-winter,
  then taking my
  sweet time to review them during the summer.
-- 
  --
  73,
Les Rayburn, N1LF 
  121 Mayfair Park
  Maylene, AL 35114
  EM63nf
6M VUCC #1712 
  AMSAT #38965
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Active on 6 Meters thru 1296, 10GHz & Light _______________________________________________ 
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