09-08-2018, 03:32 PM
Some more progress on use of Magnetic Coupling
![[Image: MagIMG_3736.JPG]](http://www.unixservice.com.au/hamradio/repeaters/duplexers/2Mpix/MagIMG_3736.JPG)
Pass then Notch, 2x 195mm x 2mm wire 14mm ID coil
and a scan
![[Image: MagP-N001.png]](http://www.unixservice.com.au/hamradio/repeaters/duplexers/2Mpix/MagP-N001.png)
============ swap the pass and notch ============
![[Image: MagIMG_3737.JPG]](http://www.unixservice.com.au/hamradio/repeaters/duplexers/2Mpix/MagIMG_3737.JPG)
Notch then Pass 2x 205mm 2mm wire 14mm ID coil (AA battery)
![[Image: MagN-P001.png]](http://www.unixservice.com.au/hamradio/repeaters/duplexers/2Mpix/MagN-P001.png)
Another build, is it repeatable...
![[Image: MagScan3.png]](http://www.unixservice.com.au/hamradio/repeaters/duplexers/2Mpix/MagScan3.png)
What about a wider view to see attenuation of local signals...
![[Image: MagWide1.png]](http://www.unixservice.com.au/hamradio/repeaters/duplexers/2Mpix/MagWide1.png)
And Phase to guage line lengths to antenna Tee...
![[Image: MagPhase1.png]](http://www.unixservice.com.au/hamradio/repeaters/duplexers/2Mpix/MagPhase1.png)
HOWZAT - Alan VK2ZIW
Pass then Notch, 2x 195mm x 2mm wire 14mm ID coil
and a scan
============ swap the pass and notch ============
Notch then Pass 2x 205mm 2mm wire 14mm ID coil (AA battery)
Another build, is it repeatable...
What about a wider view to see attenuation of local signals...
And Phase to guage line lengths to antenna Tee...
HOWZAT - Alan VK2ZIW