Re: [Flexradio] Noise problem when tuning Flex 3000

2013-01-29 Thread Brian Miller 

Thanks Ray

I agree that the noise is most noticeable with the antenna disconnected but 
it is still a serious problem when using a receiving antenna that has low 
output on 160M.


I tried reloading the factory defaults and running the General/Receiver 
calibration tests but this made no difference.


I might be wrong but I don't recall noticing the problem with the previous 
version of PowerSDR.


73, Brian VK3MI ZL1AZE

--

Message: 2
Date: Sun, 27 Jan 2013 19:37:46 +
From: Raymo99 percival@gmail.com
To: flexradio@flex-radio.biz flexradio@flex-radio.biz
Cc: flexradio@flex-radio.biz flexradio@flex-radio.biz
Subject: Re: [Flexradio] FlexRadio Digest, Vol 93, Issue 27
Message-ID: 7e90f533-8cf0-4f5f-b56e-bceba8733...@gmail.com
Content-Type: text/plain; charset=us-ascii

Hi Brian,
Yes I noticed this before, but only when the antenna is not connected, Not 
noticeable when the noise rises with antenna connected.


Regards

Ray.


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Message: 5
Date: Sun, 27 Jan 2013 11:52:14 +1100
From: Brian Miller brianmil...@xtra.co.nz
To: FlexRadio@flex-radio.biz
Subject: [Flexradio] Noise problem when tuning Flex 3000
Message-ID: 28F16F4F1D7B4BEF9166CCA389041804@miller3
Content-Type: text/plain; format=flowed; charset=Windows-1252;
   reply-type=original

I'm running a Flex 3000 radio with PowerSDR 2.5.3.

When tuning across the 160M band (in any mode) the received noise floor
toggles between a normal (lower) level and an erroneous (higher) level.
Steps as small as 1 Hz can toggle the noise floor. The erroneous level is
approximately 6 dB higher than normal and is accompanied by spurious AM
broadcast signals that can reach up to 20 dB above the noise floor. The
problem is also evident when the antenna is disconnected but the AM 
signals
are no longer present. It seems to be somewhat worse towards the bottom 
end

of the 160M band.

I am also noticing a similar effect on the 10M and 6M bands (and to a 
lesser
extent on the 15M and 12M bands) where the noise floor jumps between 
tuning

steps but on these bands it does not seem to remain toggled.

Has anyone else noticed and resolved this problem? If so then any advice 
on

how to resolve it would be appreciated.

Thanks and 73, Brian VK3MI ZL1AZE




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[Flexradio] Noise problem when tuning Flex 3000

2013-01-26 Thread Brian Miller 

I'm running a Flex 3000 radio with PowerSDR 2.5.3.

When tuning across the 160M band (in any mode) the received noise floor 
toggles between a normal (lower) level and an erroneous (higher) level. 
Steps as small as 1 Hz can toggle the noise floor. The erroneous level is 
approximately 6 dB higher than normal and is accompanied by spurious AM 
broadcast signals that can reach up to 20 dB above the noise floor. The 
problem is also evident when the antenna is disconnected but the AM signals 
are no longer present. It seems to be somewhat worse towards the bottom end 
of the 160M band.


I am also noticing a similar effect on the 10M and 6M bands (and to a lesser 
extent on the 15M and 12M bands) where the noise floor jumps between tuning 
steps but on these bands it does not seem to remain toggled.


Has anyone else noticed and resolved this problem? If so then any advice on 
how to resolve it would be appreciated.


Thanks and 73, Brian VK3MI ZL1AZE






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