[hpsdr] Double Image on HF

[Chris Gerber]

Hi Walter

This issue is well known to me, already months ago, and was brought to
attention of the software group, Warren and others.
I recorded a lot of those occuring facts, sent them to the SW group as 
facts.
I have observed this occurance on any Software versions, also CUSDR and 
Kissmode.
It must be Hardware related and can only be reset by switching the unit 
off and on again.
You can see the occurance when switching on the systen, as two peak 
appear at the
on the RX screen near the RX channel.
More clearly they appear on higher bands like 21 to 28 Mhz.
The softwaregroup looked at it and could not finde the cause..

So the fellow saying he gives a penny for, can keep his money..

73 Chris HB9BDM




Am 08.11.2013 02:19, schrieb Walter Holmes:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
>
> I am having a strange problem, and hoping someone has seen a way 
> around this...
>
> When transmitting on HF on DIGU for digital SSB, I seem to not have my 
> LSB image suppressed.
>
> It seems my carrier is suppressed, but not the other LSB SSB image.
>
> Ie..  working as Double Side Band.
>
> As seen on 20 and 15 meters..
>
> I tried USB and the same is still there..
>
> I even tried downgrading PowerSDR 3.1.5 to 3.0.17 but no difference as 
> well.
>
> Firmware here is.
>
> Metis: 2.6
>
> Mercury: 3.4
>
> Penelope: 1.8
>
> Anyone seen this anomaly or know could be triggering that ?
>
> Thanks,
>
> Walter/K5WH
>
>
>
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