[HamWAN PSDR] Remote SDR receiver available

[Bart Kus]

Glad to hear it's amusing someone.  :)  I recently spent some time 
setting up a DRM <https://en.wikipedia.org/wiki/Digital_Radio_Mondiale> 
decoder with that Kiwi.  Basically Kiwi SDR in IQ mode -> VB-Cable 
<https://www.vb-audio.com/Cable/> -> Dream 
<https://sourceforge.net/projects/drm/> in "I/Q Pos Split" mode, with 
the missing AAC+ DDL here 
<http://www.travelradio.lv/drm/drm_new_software/dream/dream1.14/dream_1.14.zip>. 
Ended up recording <http://www.hamwan.org/DreamOut.mp3> some 250kW 
broadcast all the way from Kuwait.  Not the most thrilling of content, 
but still neat to hear Hi-Fi stereo on HF.

The antenna is a large (7ft?) CB whip.  Not base loaded, just attached 
to the center conductor of the coax, with the shield attached to the 
ground rod.  Perhaps some of the folks who installed it took pictures.

--Bart

On 7/11/2018 3:54 PM, Jeff Francis™ wrote:
> Just for giggles, I dug a step attenuator out of the closet, and I can 
> still hear code clearly enough at 10mw to copy on 10m. I can actually 
> still hear it with 15db attenuation (ie, 3mw out), but not clearly 
> enough to copy. 20db (1mw) is inaudible.
>
> Yeah, I know, nothing to do with HamWAN directly, but since there's a 
> new toy to play with and all...
>
> Jeff/N0GQ
>
>
> On Wed, Jul 11, 2018 at 3:43 PM, Jeff Francis™ <jeff at gritch.org 
> <mailto:jeff at gritch.org>> wrote:
>
>     I'm curious about the antenna, as well. I can send myself CW at
>     100mw (the lowest power my radio will go) from my QTH (near
>     Snohomish) using a G5RV with a peak about 30ft, and receive it on
>     the SDR anywhere from 559 to 599, depending on the band. Granted,
>     that's only maybe 20 miles, but still rather impressive for 100mw
>     and what sounds like a very compromised antenna on the Haystack end.
>
>     You guys planning on adding this to sdr.hu <http://sdr.hu>?
>
>     Jeff/N0GQ
>
>
>     On Wed, Jul 11, 2018 at 12:51 PM, Benjamin Krueger
>     <ben.krueger at gmail.com <mailto:ben.krueger at gmail.com>> wrote:
>
>         What kind of whip? If it's just a ground rod, adding radials
>         should help.
>
>         On Wed, Jul 11, 2018 at 12:44 PM Bart Kus <me at bartk.us
>         <mailto:me at bartk.us>> wrote:
>
>             Hello,
>
>             The recent Haystack work party managed to install a
>             receive-only SDR up
>             there.  It is provisionally available for use by anyone at:
>
>             http://44.24.241.60:8073
>
>             I'll move it to a more permanent address, with proper DNS,
>             at some
>             future point.
>
>             In the meantime, I'd like to solicit advice on how to
>             minimize the QRM
>             it's picking up.  The noise is being emitted by the site
>             itself, from
>             the Ethernet cables and such.  I've connected all the
>             shields to site
>             ground, but the emissions are still there.  The current
>             antenna is a
>             ground rod with vertical whip.
>
>             1) Is there a better antenna design that can serve the
>             broadband
>             (DC-30MHz) omnidirectional receive duties?
>             2) Are there any suggestions on how to further minimize
>             the noise being
>             emitted by the site?
>
>             Thanks, and enjoy!
>
>             --Bart
>
>             _______________________________________________
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>             <http://mail.hamwan.net/mailman/listinfo/psdr>
>
>
>
>         -- 
>         Benjamin
>
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>
>
>
>
>     -- 
>     -=jeff=-
>
>
>
>
> -- 
> -=jeff=-
>
>
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