Commercial LZ1AQ Antenna Amplifier
Commercial LZ1AQ Antenna Amplifier by John VE6EY
http://play.fallows.ca/wp/radio/shortwave-radio/commercial-lz1aq-antenna-amplifier/ (sourced and republished from RSS feeds)
My commercial LZ1AQ antenna amplifier has arrived. You can read about my experience assembling and using this new system in the weeks ahead.
Over the past 12 months, I have done a lot of experimenting with active loop antennas and, in particular, the LZ1AQ amplifier circuit posted online. Mostly, I have been using a 1 meter diameter loop made from aluminum core PEX. I rolled my own circuit board design for the amplifier and, in general, they worked okay most of the time.
Recently, I decided to take the next step and obtain the commercial LZ1AQ antenna amplifier, shown above. This is an extended version of the basic LZ1AQ design, made in Bulgaria by Chavdar Levkov. Chavdar is around my age and specializes in biomedical and electronic engineering. His hobby and passion is radio.
My commercial LZ1AQ antenna amplifier cost around US$ 135, including shipping. I received it by post in around 3 weeks.
Once I get it up and running, I will compare its performance with my homebrew versions of the basic active antenna amplifier. If the commercial version proves superior, I may buy a second unit for use with diversity reception…
John is doing a great job of sharing his experience with this loop antenna design with a series of posts on his blog including: