...You can get caught out with RF and high currents causing signal gradients in the copper, I always find its worth bearing in mind that a ground plane is not always what it seems.
Another thing I found was one of my go to methods of anchors for connection nodes is punched chads of copper laminate board, stuck to the ground plane with CA glue, these can have significant capacitance and can affect HF circuits noticeably.
I can also vouch for the BC 5** series transistor range being able to take off at VHF.
So they are to be sure! Ive seen your tv line output experiment utube video! However in my circuit as it was to be powered by batteries the 200mA heater current is a bit spendy, and the extra power not needed. Peters (Kalee20) current project has had its audio stage designed with two of the 1j24p valves giving 2 Watts.
I think the pair of you should self promote a little more if you've the time, there is an audience for these types of projects, if only to inspire others.
Steering back to topic,(almost), I have recently investigated a commercial 50's Superregen and have an intention to try to replicate the design for a pair of 1J29b to see how it compares
Amongst other projects of course
Another thing I found was one of my go to methods of anchors for connection nodes is punched chads of copper laminate board, stuck to the ground plane with CA glue, these can have significant capacitance and can affect HF circuits noticeably.
I can also vouch for the BC 5** series transistor range being able to take off at VHF.
Murphyv310 Wrote:Those 1J24P power power rod pentodes are even more amazing Amie
So they are to be sure! Ive seen your tv line output experiment utube video! However in my circuit as it was to be powered by batteries the 200mA heater current is a bit spendy, and the extra power not needed. Peters (Kalee20) current project has had its audio stage designed with two of the 1j24p valves giving 2 Watts.
I think the pair of you should self promote a little more if you've the time, there is an audience for these types of projects, if only to inspire others.
Steering back to topic,(almost), I have recently investigated a commercial 50's Superregen and have an intention to try to replicate the design for a pair of 1J29b to see how it compares
Amongst other projects of course
