About
I’m a computer scientist at Tel-Aviv University with a fairly wide range of technical interests.
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Recent Posts
- Repairing an R&S CMU200
- Partial Restoration of an FT-101E
- Toaster-Oven Reflow with Normal Solder (no Solder Paste)
- Surface-Mount (SMD) Prototyping and Hacking
- J-Pole Antennas for GPS
- Replacing Fans in USRP N200s
- A Second-Generation Front-End Unit
- Building a CobWebb Antenna
- A Selective and Robust UHF Front-End
- Restoring a Heathkit SB-101
- A Partial Restoration of a Heathkit HW-32A
- Rebuilding a Heathkit HP-23 Power Supply
- Getting Started with the VNWA
- Toaster-Oven Reflow Soldering without a Controller
- PCBs with Eagle and Low-Cost Manufacturers
- Fabricating PCBs with the Toner-Transfer Hobby-Knife Method
- DC Connectors
- A small improvement to the DEMI LNA and a UHF J-Pole Antenna
- Transmitting (and Receiving) DVB-T on 1.2 GHz
- A High-End UHF Preamp for the VHF/UHF Dongle
- A High-Performance Sound-Card AX.25 Modem
- All-Mode VHF/UHF Reception with a Low-Cost TV Dongle
- Using the USRP with HDSDR
- Using a Motorola PageTrac and a VHF Antenna Tuner in an APRS iGate
- A Lego Enclosure for an APRS Tracker with a Built-In Antenna
- Building an APRS Tracker
- Two Monoband Magnetic Loop Antennas
- HF Email using Winlink 2000
- First Steps with GNU Radio
- APRS Using WiFi Localization
- Soundcard now Decodes APRS
- Soundcard APRS
- The Trombone Magnetic Loop for 50MHz
- A Tripod Mount for the Satellite Yagi
- Streaming Radio Channels on the Web through RadioReference.com
- Finishing Up the Satellite Yagi
- Repairing a Deaf Softrock Transceiver
- Building the UHF Cheap Yagi for Satellite Communication
- An Update on the Coax Transmitting Loop
- Building Chavdar Levkov’s Active Wideband Loop
- Linux Serial Server Now Working with HRD and FT-857
- Reverse Engineering the HRD Remote Serial Protocol
- WSPR Results with Two Different Sound Cards
- Adding PTT Activation to the Serial and Sound-Card Interface
- A Simple Serial and Sound-Card Interface for the Yaesu FT-857D
- Remote WSPR and Quisk on a Remote Nettop Computer
- Re-Crystaling a 10MHz Softrock Receiver
- A Papier Mâché Electronic Enclosure
- A Driverless Ethernet Sound Card
- WSPR with Two Receivers and One Computer
Archives
- August 2019
- September 2018
- December 2017
- July 2017
- June 2017
- February 2017
- February 2016
- January 2015
- November 2014
- October 2014
- September 2014
- June 2014
- January 2014
- December 2013
- August 2013
- June 2013
- February 2013
- December 2012
- August 2012
- July 2012
- April 2012
- February 2012
- December 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
Thanks for putting up the radio reference feed. It’s great!
Interesting modem to sound card. See here http://ua6hjq.qrz.ru/pr/uz7ho.htm and here http://uz7.ho.ua/index.php?lang=eng&id=4
Thanks Igor. Yes, I am aware of the new UZ7HO modem, although I have not tried it yet. Perhaps I should.
thanks for the entry on bias tee’s – very useful for me.