Re: Antenna Analyzer
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I've already started it...that's where the photo came from (simulated data). Right now I have it working on a breadboard, but the new part of the circuit is on the homemade board you see in the photo. Farrukh is laying out a new board that will have the Nano/DDS/analyzer on one side of the board, and the header socket for a 3.95" color display on the other side. He's looking into the newer AD9851 chip, as that can go up to 70MHz, which would also allow 6M coverage. If we can get some quantity price breaks, it should be about $50 to build. I expect to write an article on it similar to the Forty-9er article in that it will have a separate construction manual and source code. I want to keep the Nano, but already I'm pressing on the memory limits, and that's without using the TFT display card's onboard SD card for data storage. The Teensy 3.0 would be a good choice, but I haven't been able to get it to work with the display and it's $20 versus $2 for a Nano. I'll keep everyone posted. Jack, W8TEE From: "white512@... [SoftwareControlledHamRadio]" To: SoftwareControlledHamRadio@... Sent: Wednesday, April 6, 2016 9:40 PM Subject: [SoftwareControlledHamRadio] Antenna Analyzer Any thoughts to developing an antenna analyzer using the DDS VFO as the core of the analyzer?
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jjpurdum