08-08-2022, 07:32 AM
(This post was last modified: 08-08-2022, 07:35 AM by Radio Fixer.)
Well I assume you have not made too big a loop? One friend made one with 3m sides and that was a bad idea. 1m to 1.5 is certainly enough.
Maybe your component positioning isnt as shown? My first ones had a double sided copper screen between the first and second stages (on the top side). They also had either ferrite beads on all base leads and earlier no beads but low value resistors in series with them on the first pair of transistors. Think value was 10 Ohms.
Are you using a long coax feeder ? 50m plus
Gary
Maybe your component positioning isnt as shown? My first ones had a double sided copper screen between the first and second stages (on the top side). They also had either ferrite beads on all base leads and earlier no beads but low value resistors in series with them on the first pair of transistors. Think value was 10 Ohms.
Are you using a long coax feeder ? 50m plus
Gary
