80m ARDF Antenna Update

[NZ0I]

Thanks to the excellent work of W7PUA there is now a revised version of the 80m ARDF antenna. W7PUA is responsible for most of the design and testing. But the design remains experimental since not all of the design (my additions) has been tested in hardware, and the antenna has not yet been field tested. So build it at your own risk at this point in time. But hopefully the next iteration of the design will be of prototype quality and completeness.

Schematic: 

https://drive.google.com/open?id=0B9STTH26Cx2FalBaRnR4dHAtWFU

BOM:

https://docs.google.com/spreadsheets/d/1igPv9MWKLW6aHyyAR6nnDo25N4kdolLSdlsUvDWjqB8/edit?usp=sharing

Board: 

https://oshpark.com/profiles/DigitalConfections

Below are some of the features of the new design:

1. W7PUA antenna design with footprints that match its components.

2. Rudimentary attenuator (1k pot).

3. Snap-off boards for the attenuator, BNC connector, and cardioid switch - so they can be panel mounted if you like.

4. Pin header for plugging in loop-tuning capacitors.

5. Mask-free prototype area for dead-bugging experimental components.