Quote:
Originally Posted by tripelo
Yes, looks like it is.
It appears L7 is meant to move to L7a location for the 0264 version.
Your preamp is probably newer.
.
|
Could be. There are some noticeable differences between the two.
Bare copper vs coated copper.
It also would appear they tuned the G1 next to the trap adjustment.
It has a silicon strip across it to hold the coils in place.
If somebody had a CNC machine to mill the traces. That board would be pretty easy to replicate after inputting the necessary data.
Then it would be a matter determining the ferrite core. Or install half wave loops and sourcing the rest of the components. It would be a nice challenge for a hobbyist.
The units have 3.0 and 2.2 dB in noise. I wonder if it would be possible to determine and optimize the components creating the noise.
Jeff Kitz has shown that it is possible to create low noise preamp. Then there is Winegards LNA-100. Also very low noise.
I would imagine a portion of the noise is being generated by the PSU.
The 3 capacitors @ C7, C13 and C28 would be suspect as well.