Re: [Discuss-gnuradio] PCR-100 as a frontend ?

[George Barrinuevo]

I found it at:
http://www.wentztech.com/radio/PCR1000/PCR1000.html

I found the link at one of the PCR-1000 Yahoo Group
sites.

This one has very nice close up pictures.  

I am not an electronics person, but the procedure mod
looks like you have to solder a capacitor between the
Q85 point and the coax cable which leads to your
external antenna, correct?  And the coax foil
shielding is connected to the PCR-1000 ground screws. 

Can someone determine if these same mods also work for
the PCR-100?

Thanks,

--- George Barrinuevo <address@hidden> wrote:

> I have a PCR-1000 (similar to PCR-100).  Where can I
> find the instructions to tap the 10.7 Mhz IF for
> this
> receiver?  The Data Jack output is the FM
> Discriminator which is not as good as the 10.7 Mhz
> IF.
> 
> Also, once you tap the 10.7 Mhz IF, where does it
> connect on the Basic RX board?  If it connects using
> the SMA connector, what is the method to solder the
> wires from the 10.7 Mhz IF to the SMA cable?
> 
> Thanks,
> 
> --- Jim Perkins <address@hidden> wrote:
> 
> > I just bought one of these as well.  Right now
> there
> > is a guy on eBay 
> > selling a load of them (with no accessories) for
> $50
> > each plus $5 
> > shipping.   Here is the only mod info that I've
> > found on the 10.7 MHz IF:
> > 
> > The buffered 10.7 MHz IF Output is available at
> the
> > emitter of 
> > transistor of Q85. Q85 is located close to the
> edge
> > of the large board, 
> > near J1. If you place the radio with the antenna
> > connection to the left, 
> > Q85 is the first transistor to the right of the
> > smaller IF filter at the 
> > top left hand corner of the RF board. This is
> > directly above the metal 
> > can for one of the LO's. The emitter is the upper
> > left terminal (if the 
> > radio is oriented as described above). There will
> be
> > a DC level at this 
> > point, so will want a coupling capacitor.
> > 
> > 
> > 
> > address@hidden wrote:
> > > [ My first post, new to radio ]
> > >  
> > >   I saw on the list the suggestion that the
> > PCR1-100 could make a good
> > > frontend for the USRP. Well, what the heck, 75$
> is
> > not much. The radio
> > > works just fine with its windows software, and I
> > can get basic control
> > > of it via hamlib. I searched the net for PCR-100
> > hacking and found a
> > > couple of links. The first is to get the
> > discriminator output at pin8 of
> > > IC 10. No problem, and the second link refers to
> a
> > DRM mixer. The photos
> > > are unclear, but I assume it taps the 10.7Mhz
> IF.
> > Does anyone have any
> > > information on tapping the 10.7Mhz IF on this
> > thing, or am I barking up
> > > the wrong tree for using this as frontend to the
> > usrp ?
> > >
> > >
> > > Many thanks,
> > > Simon Convey
> > >
> > >
> > > _______________________________________________
> > > Discuss-gnuradio mailing list
> > > address@hidden
> > >
> >
>
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> > >
> > >   
> > 
> > 
> > 
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> >
>
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> > 
> 
> 
> George Barrinuevo
> address@hidden
> 
> 
> 
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George Barrinuevo
address@hidden