For those who have an access to a 3-d printer: – Chavdar LZ1ABC has a project for a compartment for the Control Board of AAA-1. Go to https://www.thingiverse.com/thing:4095697 to download the 3d design file. Many thanks Chav – Mike G4RAA … Continued
This is for the people like me who intend to use their SDRs with their transceiver as one integrated unit. For a long time (from 2008) I have been using a homemade solution for antenna switching and audio path switching. … Continued
These days the time of the arrival of the parcels becomes unpredictable. In EU between 5 days and more than a month. In the rest of the world it is ????? . The tracking also does not work always by … Continued
By our fault for, some time, part of documentation was missing in https://active-antenna.eu/amplifier-kit/technical-documentation/ . The missing file is “Model AAA-1C. Addendum to AAA-1B documentation” It is now available at https://active-antenna.eu/wp-content/uploads/2020/08/aaa-1c_addendum_11.pdf . Sorry for the inconvenience. Regards, LZ1AQ
A combination of a small magnetic loop and small electrical dipole or ground plane (GP), both vertically placed in a single point is widely used as a simple direction finding antenna. How to build a wideband version with active small … Continued
An Application note is added : http://active-antenna.eu/application-notes/filters-to-reject-strong-input-signals/ The AAA-1 amplifier has a very good dynamic range – it is higher than the most RF preamplifiers used in the best transceivers. But it is wideband and there are no filters at … Continued
We must inform our customers that we will not send parcels during Christmas and New Year holidays. The last parcels were sent on 18 Dec 2018. The next date for dispatch will be on 3-d of Jan 2019. We wish … Continued
There is a new article “Impact of the Height Above the Ground to the Receiving Performance of a Small Wideband Magnetic Loop” Two identical loops are placed at 0.2m and 3m above the ground and the receiving performance is compared … Continued
Hello all, There is a new version of Control Board v.1.10. Now it has two different limiters which limit the output voltage either 4 V pp or 2 V pp in order to protect the receiver front end. Read http://active-antenna.eu/application-notes/receiver-front-end-protection/. … Continued
An application note “Receiver Front End Protection When Used with Active Antenna AAA-1″ AAA-1 active antenna has very high dynamic range and its 1 dB compression point is at +20 dBm. At the output a heavy clipped signal can reach … Continued
