[Elecraft] SDRPlay as panadapter

[Jim Brown]

Hi Wes,

There are probably at least a half dozen pieces of software written to 
use the output of SDRs in the way that suits individual hams. SDRUno is 
the one they paid someone for, but before I gave up on the radio, I'd 
try the others.  Most (if not all) are freeware. One of the first I'd 
look at is Simon Brown's contribution (he was the original author of HRD 
when it was freeware, sold it to current owners when he got tired of 
answering support questions.

Another issue may be that you haven't figured out how to switch in the 
BCB filter. That's another issue with all of this stuff -- 
documentation, user interface that not even the programmer's mother 
could love, etc.

73, Jim K9YC

On 9/27/2017 6:33 PM, Wes Stewart wrote:
> Part of the reason is explained in my eham review.  Note that I'm not 
> the only one to complain about SDRUno, maybe just the most blunt.
>
> That said, I began to take it as a challenge to make it work, (my XYL 
> thinks I'm nuts) until I connected my tuned 30-meter dipole to it and 
> tuned WWV on 10 MHz and was able to copy a local AM broadcast station 
> on 830 KHz at the same time.  It took at least 20 dB of additional 
> attenuation to eliminate the problem (and WWV), and this thing is 
> supposed to have BC notch filtering.
>
> My SDR-IQ doesn't flinch under the same conditions even though it 
> takes 40 dB of attenuation to keep it out of overload when tuned to 
> KFLT on 830 KHz.  I've measured their daytime (50KW) signal at -3 dBm 
> on my 160 inverted-L. That's S9+70, but it's what I have to live with, 
> so either I have a defective RSP or it's a design I can't live with.  
> Either way, it's going back.
>
> Wes  N7WS
>
> On 9/27/2017 4:36 PM, Mark E. Musick wrote:
>> Hi Wes,
>> Why are you returning the RSP2pro?
>>
>> Mark, WB9CIF
>>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net 
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Wes Stewart
>> Sent: Wednesday, September 27, 2017 10:21 PM
>> To: elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] SDRPlay as panadapter
>>
>> I bought an RSP2pro last week.  I just got off the phone with HRO 
>> arranging its return.
>>
>> I too use an SDR-IQ as a panadapter and as a decent lab spectrum 
>> analyzer if you are careful and know what you're doing. Actually, I 
>> have two K3s so I have two SDR-IQs.  SpectraVue software is the only 
>> SDR software I've ever liked.  It interfaces with the K3 
>> seamlessly.   Every other program I've tried has been installed and 
>> quickly uninstalled.  Sometimes more than once, usually having me ask 
>> myself, "Self, what were you thinking?" before uninstalling again. 
>> Apparently, programmers do not think like normal people do and try to 
>> turn a relatively simple tool into a video game.
>>
>> Wes  N7WS
>>
>>
>> On 9/26/2017 10:11 PM, Edward R Cole wrote:
>>> Don't have the SDRPlay, but do have a SDR-IQ which operates using
>>> Spectravue quite nicely.  Noise floor below 550-KHz is -130 dBm and
>>> with antenna noise varies -115 to -95 dBm in the 600m band.
>>>
>>> I typically use it on the 28-MHz IF of my VHF and higher transverters.
>>>
>>> I bought two LP-Pan1 (with mod to LP-Pan2) which are connected to my
>>> K3 main and subreceiver's IF's.  I can run them as panoramic band span
>>> through a Delta soundcard for up to 192-KHz bandspan. The LP-Pan are
>>> tied to a single LO for coherent dual IQ to recover diversity 
>>> reception.
>>>
>>> 73, Ed - KL7UW
>>>    http://www.kl7uw.com
>>> Dubus-NA Business mail:
>>>    dubususa at gmail.com
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>
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