W8TEE and K2ZIA Antenna Analyzer
Another Arduino based project. This time an W8TEE and K2ZIA Antenna Analyzer.
Purchased the PCB from https://qrpguys.com/w8tee-k2zia-antenna-analyzer
Not a kit so sourced the components. Easy to order from china off eBay. Took about 2 weeks for all the bits to come in.
Assembled and she started but the SWR for a 51ohm dummy load was off the scale.
The audrino and screen are ok. Checked and double checked solder joints so needed to verify the DDS and SWR bridge operations.
My old Dick Smith device is not cutting the mustard so borrowed an oscilloscope from Lacky VK3ALM. Traced the signal into the SWR bridge and nothing out. Checked the components and well my bad as the 51ohm resistors were in-fact 51K ohm. Bit of a difference. Replaced and off she went !
Downloaded the latest WA2FZW software from IOGroups – https://groups.io/g/SoftwareControlledHamRadio/files/Improved%20Analyzer%20Software
The documentation and a debugging guide are available from this group, essential information.
Use a case from radio parts (CB8808). Yes there is a pimple in the middle. No intention to remove as works fine.
So far have scanned all my antennas at home. I can recommend this device. Not a kit but the process to source and assemble was fun.