I am a little confused on this issue, also.  If the QSD does not need 
roofing filters, why was there a 160 meter filter as described below?

Jeff et all, the filter that is supplied with a new Flex Radio is a low 
pass filter. It does not attenuate broadcast band signals. There is a 
problem with the SDR-1000 (many other radios too) when you live in an 
area that has broadcast stations in the area. Broadcast station images 
appear in the 160 meter band. The Flex that I just sold was sent back to 
Flex and had a "bandpass" filter installed in place of the low pass 
front end filter that is standard. 160 meter operation is flawless with 
this mod! If you normally listen to broadcast stations however, you will 
not be able to do that after the new filter is installed. I am sure that 
Gerald or Eric can supply the information on what is needed to make this 
change. It is a couple of new inductors and caps and can be done by the 
owner without shipping it back if you are handy with the "iron". If all 
you have is a blowtorch however ... you might want to send it back!
 
--Larry W8ER

This sounds as if the QSD does need a bandpass filter and not just a 
lowpass filter.

Tom   W0IVJ




Jim Lux wrote:

>At 03:04 PM 4/12/2007, Toby Deinhardt wrote:
>  
>
>>Hi,
>>
>>I don't want to harp about this, but which is really correct?
>>    
>>
>
>
>
>You're right about clarifications...
>
>I read the ad as referring to a combination of hardware (LP) filters 
>and software (DSP) filters that are optimized for the band...
>
>Jim
>
>
>
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