[Flexradio] 1.18.3 Noise ?

[Dan Scott]

I forgot a couple items:
1.  the noise is between from 15-meters through 30-meters.
2.  I did a cold start up test too.  Shut everything down for 12 hours 
and tested immediately after bring everything back up.
I normally leave the radio powered up because it has a difficult time 
getting onto frequency.  It take a few power cycles to get the SDR-1000 
on frequency, but once on, it stays on frequency.

Dan Scott wrote:
> I've been fighting what I thought was an RFI problem.  To the point of 
> connecting the radio to a Battery and swapping out the computer's UPS 
> with different one as well as testing with a power inverter. Obviously 
> I turned off all power in the house for the test.  What looks like RFI 
> remained.
>
> Anyway what I eventually did was ... think.  That is, I asked myself 
> the question "What was the last thing that changed?".   Hmmm .. Oh, I 
> installed 1.18.3.
> Anyway for a 1.18.2 vs. 1.18.3 comparison with a dummy load for 
> antenna and a fresh database when swapping between version:
>   Noise Floor
>   -- V1.18.2 = S1
>   -- V1.18.3 = S3
>   Waterfall
>   -- V1.18.2 = blank with a couple off freq spurs
>   -- V1.18.3 = green with a solid noise line every kc.. i.e.  14.200, 
> 14.201, 14.202...etc.  not exactly but general idea.
>
> When connected to an antenna, the Noise Floor of v1.18.3 is always 2db 
> to 3db higher than that of v1.18.2.  Also another radio was used to 
> verify if the higher noise floor was just a metering difference or a 
> if 1.18.3 was imposing additional noise.  The result is the FT-100 
> could receive SSB, CW, and digital which the SDR1000 with 18.2.3 
> covered up with noise.  With 1.18.2 the SDR-1000 easily out received 
> the FT-100.
>
> I did not see anything else on this problem in the forum, meaning I'm 
> rather poor at finding things (true!) or the problem is isolated to my 
> setup.  I have not tried swapping PCs yet, hoping for a resolution 
> before having to do that painful test.
>
> The rig is a SDR1000 with FA66.  Parallel cable is used.  Computer 
> (homebuilt quad-core) runs 7% - 13% while using PowerSDR along with 
> DDUtil, DX Commander (without WW), and N1MM (if not a couple other 
> odds-n-ends).  This exact hardware setup has been running flawlessly 
> for at least 1 year.
>
> Thanks
> Dan
>
>
>
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