[hpsdr] [OT] "STAR-10" transceiver?

[Giancarlo Moda]

Hi Ken,

the project seems to be quite interestin, looking at
the circuit diagram.

The data reported it seems to me very "aggressive" ...
but everything is possible.

The English prject CDG2000 with front end H-Moder
Mixer with IP3 over +45dBm has IMD generated by the
passive coils nad f.e. filters and has an IP3 of
+40dBm. 
The STAR 10 has the first mixer with an IP3 of +25dBm,
meaning you have an LO with a lot of power to drive
it... so LO spurs possible to go around.

If you are looking for a very interesting 100%
homebrew project look at the STAR II (G3XJP
Pic-A-STAR) a software transmitter and receiver with
very ineteresting performances, a very good software
package and no PC use, except to download the
software...

visit: http://uk.groups.yahoo.com/group/picastar/

73

Gian
I7SWX
> 
> Message: 1
> Date: Fri, 06 Jul 2007 19:52:53 -0500
> From: Ken N9VV <n9vv at wowway.com>
> Subject: [hpsdr] [OT] "STAR-10" transceiver?
> To: Flex-radio Reflector <flexradio at flex-radio.biz>,
> Open High
> 	Performance SDR Project <hpsdr at hpsdr.org>
> Message-ID: <468EE3E5.702 at wowway.com>
> Content-Type: text/plain; charset=ISO-8859-1;
> format=flowed
> 
> does anyone know anything about the "STAR-10"
> transceiver designed by KW7CD?
> 
> from his QRZ webpage: http://www.qrz.com/KW7CD
> --------------------------------
> "HF Transceiver: Star-10(c) Pictured above -- "Home
> Brewed" - 100 Watts 
> continuous (125 Watts Peak) from 1.8 MHz to 30 MHz
> continuous coverage 
> in 10 Hz, in one band using a fully synthesized
> microwave DDS-Driven PLL 
> running at ~1 GHz. Phase noise -133 dBc/Hz from 400
> Hz to 20 KHz. 
> Receiver composite linear dynamic range >150 dB, MDS
> = -136 dBm, IP3 = 
> +45 dBm, with preamp ON."
> --------------------------------



       
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