For SDR users

[Karl W4KRL]

Just got this advertisement from an eBay vendor I have dealt with
successfully. I have no knowledge of the product or its quality but it looks
interesting. 

 

73 Karl W4KRL

 

Description from vendor:

Converts signals in the MF <http://en.wikipedia.org/wiki/Medium_frequency>
and HF <http://en.wikipedia.org/wiki/High_frequency>  Bands to signals in
the VHF <http://en.wikipedia.org/wiki/Very_high_frequency>  Band
(specifically 100.5MHz to 150MHz). Intended for use in receiver applications
with projects like RTL-SDR <http://sdr.osmocom.org/trac/wiki/rtl-sdr> /SDR#
<http://sdrsharp.com/> /FunCube Dongle <http://www.funcubedongle.com/> , or
to listen to AM radio using an FM receiver. 

The design files can be found in SVN
<http://code.google.com/p/opendous/source/browse/trunk/Current_Designs/Upcon
verter/>  or downloaded as an archive
<http://opendous.googlecode.com/files/Upconverter-100MHz-ADE_Design_Files_Re
v2012-09-02.zip> . The board was designed using the Free Open-Source
Software <http://en.wikipedia.org/wiki/Free_and_open-source_software>  KiCad
<http://iut-tice.ujf-grenoble.fr/kicad/>  and QUCS
<http://qucs.sourceforge.net/> . All design files are Open Hardware
<http://freedomdefined.org/OSHW>  and released
<http://code.google.com/p/opendous/source/browse/trunk/Current_Designs/Upcon
verter/License.txt>  into the Public Domain under Creative Commons CC0
<http://creativecommons.org/publicdomain/zero/1.0/> . 

Now available from NooElec Online
<http://www.nooelec.com/store/software-defined-radio/ham-it-up-v1-0-rf-upcon
verter-for-software-defined-radio.html>  or eBay
<http://www.ebay.com/itm/Ham-It-Up-v1-0-RF-Upconverter-For-SDR-Funcube-RTLSD
R-MF-HF-Converter-E4000-/150916970582> . 

KS4JU at HamRadioScience <http://www.hamradioscience.com>  has a review
<http://www.hamradioscience.com/ham-it-up-hf-converter/>  of the board and
has posted a tutorial video <http://www.youtube.com/watch?v=Rnof4xGkdAo> . 

Questions or comments? Visit the Opendous Google Group
<http://groups.google.com/group/opendous> ! There is also a FAQ
<http://code.google.com/p/opendous/wiki/Upconverter#FAQ>  and additional
testing results <http://code.google.com/p/opendous/wiki/Upconverter_Testing>
. 

Design

The Upconverter is a passive Double-Balanced Mixer
<http://www.radio-electronics.com/info/rf-technology-design/mixers/double-ba
lanced-mixer-tutorial.php>  with RF switches at input and output to allow a
Passthrough mode. Power is sourced from a standard USB-microB connector to
allow powering via mobile device chargers
<http://en.wikipedia.org/wiki/Universal_Serial_Bus#Mobile_device_charger_sta
ndards> . The switch controls the signal path, Passthrough or Upconvert, and
mirrors the board layout. Switch towards the SMA connector is Upconvert,
towards PCB edge for Passthrough. 

 

http://www.ebay.ca/itm/Ham-It-Up-v1-2-RF-Upconverter-For-SDR-Funcube-RTLSDR-
MF-HF-Converter-R820T-/161039905660?ssPageName=ADME:B:FSEL:CA:1123

 

http://code.google.com/p/opendous/wiki/Upconverter

 

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