Article below is a part of the assembly process of the UHF duplexer – main article is HERE.
Drawing below shows a [AL100] – 20mm Copper Disk
Main purpose of the part is to make easier to tune the duplexer cavity using the copper rod
The part to be soldered to the copper rod – use a gas torch, a standard solder iron would be probably not strong enough.
![](https://www.rozenek.com/wp-content/uploads/2022/11/AL100-20MM-COPPER-DISC.png)
![](https://www.rozenek.com/wp-content/uploads/2022/11/AL100-20MM-COPPER-DISC.jpg)