[hpsdr] Double Image on HF

[Walter Holmes]

Thanks Erik,

 

I have seen this myself on receive in the past, and a restart of PowerSDR
always resolved it..

 

But this seems to be on my Transmit side this time.

 

And I have power cycled the Atlas HPSDR chassis as well as my computer
several times as well.

 

But the problem is still present..

 

Thanks,

 

Walter/K5WH

 

From: Erik Skovgaard [mailto:ve7mdl at gmail.com] 
Sent: Thursday, November 07, 2013 7:44 PM
To: walterh at k5wh.net
Cc: HPSDR
Subject: Re: [hpsdr] Double Image on HF

 

Hi Walter,

I have seen that, too, although not with the latest firmware.

The cure was simply to close PowerSDR, power off the Anan-10 and restart
everything.  It only happened a couple of times, so I never got a chance to
track down the problem.

73 de ve7mdl,       ....Erik.

On Nov 7, 2013 5:19 PM, "Walter Holmes" <Walterh at k5wh.net
<mailto:Walterh at k5wh.net> > wrote:

***** 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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