AmateurLogic.TV 15: Building The Softrock Software Defined Radio

1. 

   K7AGE says:

   March 7, 2015 at 8:08 AM

   Great show. I have never did any surface mount soldering, it looks easier
   that I thought. Looking forward to the softrock demo on the next show. Keep
   up the good work. Maybe I can join in on some show. Randy

   Reply
2. 

   AmateurLogic.TV says:

   March 7, 2015 at 7:12 AM

   You would need to tap into the IF stage of the radio and then feed that to
   a SoftRock or similar receiver to use as a downconverter. The SoftRock kit
   is around $50. I will be covering a detailed example of doing this in a
   future episode.

   Reply
3. 

   poikaa3 says:

   March 7, 2015 at 6:16 AM

   I use KAPTON tape to hold my multi-pin chips down. It is heat proof and low
   cost!

   Reply
4. 

   AmateurLogic.TV says:

   March 7, 2015 at 6:00 AM

   The SoftRock acts as a downconverter. It steps the RF signals down to audio
   frequencies which are then fed into the soundcard. With a 96KHz samping
   rate soundcard I can see almost 50 KHz of bandwidth. Since most HF signals
   are around 3KHz wide, I can see about 15 of them at once. PowerSDR software
   allows me to select up to two of these signals to listen to at once. To see
   another portion of the band (or another band) the frequency of the SoftRock
   is changed. It really does work great.

   Reply
5. 

   PETEGK SALONIKA says:

   March 7, 2015 at 5:55 AM

   lots of thanks, you guys doing a great job my best regards and thanks from
   Europe Greece 73′ Pete sv2mke

   Reply
6. 

   AmateurLogic.TV says:

   March 7, 2015 at 5:16 AM

   You got it! There are a lot of guys using 192 KHz cards. I have one but
   unfortunately it won’t work with the software I use.

   Reply
7. 

   Stuart Grant says:

   March 7, 2015 at 4:25 AM

   I do so enjoy this channel. Allways interesting allways stimulating. Nice
   Guys..

   Reply
8. 

   Pepsifx357 says:

   March 7, 2015 at 3:55 AM

   @gthomas That makes much more sense. So if I were to use, say, a 192khz
   sound card, I would be able to see more of the spectrum? And, obviously,
   even more with a sound card that could achieve 384kHz.

   Reply
9. 

   Pepsifx357 says:

   March 7, 2015 at 3:08 AM

   I’m new to Ham Radio but I know a lot about audio cards on computers. If
   the lowest frequency on a 1.25 Meter band is 222.0 MHz then how can a sound
   card, which most have the highest A/D conversion of 96Khz, be able to
   decode radio signals? You would have to acquire a high cost audio mastering
   interface, that supports the DAD A/D conversion format to get to the 5MHz
   range of decoding.

   Reply
10. 

    Pepsifx357 says:

    March 7, 2015 at 2:21 AM

    @gthomas So could you connect a regular radio to a down sampling device and
    use this software? If so, how much would a device like that cost?

    Reply
11. 

    1KiloWatt says:

    March 7, 2015 at 1:54 AM

    hi is it possible to download this videos in a better quality? 73s

    Reply
12. 

    Dennis Valliant says:

    March 7, 2015 at 1:19 AM

    I certainly enjoyed this show. Found out about it during a QSO with another
    ham when we were talking about building SMT kits. I’ve always been scared
    of them, but I’ll give it a shot. Dennis KI5IK

    Reply
13. 

    dcgibson55 says:

    March 7, 2015 at 1:18 AM

    The Degen DE1103 reviewed in this episode is an outstanding radio at an
    extremely low price. The USA version is called the Kaito KA1103. The only
    difference between them is that the USA version comes with a 120 volt AC
    adaptor as opposed to a 220 volt that comes with the Degen. I highly
    recommend it.

    Reply

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