[hpsdr] Question about Penelope and LF

[EB4APL]

Not really, the BandText entries affects only the display, in fact the
background color of the band name window.  The locking is in the code,
at least for the SDR-1000.   The reason for this seems to be related to
the regulatory agencies (FCC and so) not been very happy with mods
allowing transmitting in unauthorized frequencies and their initial
concerns about software defined radios.

Since the source is public it can be easily modified if you have the
development system.  I investigated this  topic in the very early days
trying to adapt the band plan to Europe and also to use my SDR-1000 as a
signal generator.  I don´t know where this code is now.

Anyway, here is a simple trick that you can try (it works in my
SDR-1000):  define a  " NULL VHF XVTR", one which covers lets say 100 to
150 kHz, with a 0.0 MHz LO offset and you will get direct reading.
Label the button as you please and that´s all. Even you don't need to 
select VHF !!!

73 de Ignacio, EB4APL



Todd.KV1M at gmail.com wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>   
>
> ------------------------------------------------------------------------
>
> Come to think of it, wouldn't unlocking the band be as easy as adding 
> it in to the BandText table and loading it up with a yes in the 
> Transmit field?
>
> Todd M0GLO (M/KV1M)
>
> On 28 Apr 2009 14:37, Todd.KV1M at gmail.com wrote:
> > Excellent!
> >
> > I am at a loss to understand why PowerSDR would lock out an Amateur 
> assigned frequency, is it perhaps that their own commercial hardware 
> doesn't go that low?
> >
> > No matter, I can look into one of the other developing interfaces 
> for work down there I suppose.
> >
> >
> > 73!
> >
> > Todd M0GLO (M/KV1M)
> >
> > On 28 Apr 2009 14:29, Phil Harman phil at pharman.org> wrote:
> > >
> > > Hi Tod,
> > >
> > >  
> > >
> > > Apart from PowerSDR locking Tx out on that
> > > frequency I can't see any reason why you wont get some power out 
> down there -
> > > even if not the full 0.5W.
> > >
> > >  
> > >
> > > 73's Phil...VK6APH
> > >
> > >  
> > >
> > >  
> > >
> > >
> > > ----- Original Message -----
> > >
> > > From:
> > > Todd.KV1M at gmail.com
> > >
> > > To: HPSDR discussion list
> > >
> > > Sent: Tuesday, April 28, 2009 6:55
> > > PM
> > >
> > > Subject: [hpsdr] Question about Penelope
> > > and LF
> > >
> > >
> > >
> > > ***** High Performance Software Defined Radio Discussion List
> > > *****
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Hi all,,
> > >
> > > I was wondering if Penelope could be used for the
> > > 135kHz band?
> > > Is it just a matter of the on board filters stopping it or is
> > > there nothing keeping it from sending signal at this
> > > frequency?
> > >
> > > Thanks!
> > >
> > > 73,
> > >
> > > Todd M0GLO (M/KV1M)
> > >
> > >
> > >
> > >
> > >
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