[hpsdr] Penelope Minimum Power

[n3ick at cox.net]

Thanks Joe,
  I will go the route of using an attenuator and set the PA gain in PSDR  to where I see 100W on all bands.
73's de N3ICK 

---- Joe Martin K5SO <k5so at valornet.com> wrote: 
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Hi Keith,
> 
> If you run Penelope at power levels lower than about 200mW or so your  
> dynamic range will suffer so it's best to use an external attenuator  
> and always run Penelope at a healthy output level from the board itself.
> 
> If you only need 2 mW or less output you can pull J2 and take the rf  
> out from pins 1 & 3 on J2 instead of from the BNC connector.   
> Actually, you can lift the center conductor pin on the BNC connector  
> from the board and use a small coaxial line from the BNC over to J2 to  
> make a nice configuration.  Doing so bypasses the output amplifier  
> stage on Penelope and allows you to run with full dynamic range but  
> with a very low power out level.
> 
> If you need more than 2mW out an external attenuator with the normal  
> Penelope configuration is best.
> 
> 73,  Joe K5SO
> 
> On Apr 27, 2009, at 8:46 AM, <n3ick at cox.net> wrote:
> 
> > ***** High Performance Software Defined Radio Discussion List *****
> >
> > Was wondering if anyone had already checked what the stable minimum  
> > output power or Penelope is? Setting up a PA to use with it I need  
> > to use low power settings to prevent overdriving the PA. Maybe would  
> > be best to just put a fixed attenuator in line because of software  
> > changes that may occur. Any info and thoughts appreciated thanks.
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