[HamWAN PSDR] Remote SDR receiver available

[Jeff Francis™]

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> 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?
>
> Jeff/N0GQ
>
>
> On Wed, Jul 11, 2018 at 12:51 PM, Benjamin Krueger <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> 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
>>>
>>> _______________________________________________
>>> PSDR mailing list
>>> PSDR at hamwan.org
>>> http://mail.hamwan.net/mailman/listinfo/psdr
>>>
>>
>>
>> --
>> Benjamin
>>
>> _______________________________________________
>> PSDR mailing list
>> PSDR at hamwan.org
>> http://mail.hamwan.net/mailman/listinfo/psdr
>>
>>
>
>
> --
> -=jeff=-
>



-- 
-=jeff=-
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