[R-390] Sigmapert 26Z5W's and otherness

[Ken Harpur]

Good morning List,

I just had a look  for the 26Z5W replacements and they are all sold already. Hopefully he'll have some more soon.

Currently I have his C603 and C606 capacitor replacements in two of my radios and will shortly get another set for my other radio. They are indeed nicely made. Very elegant indeed...

Until a few nights ago I had one of his 3TF7 replacements which was working well...until I made the mistake of switching back to the original glass 3TF7 with the receiver powered on. You all are probably wondering why I even thought of it...I was trying to track down a noise issue so I did a quick A/B test. Now the unit is non-functional so I'm back using the glass 3TF7. So please learn from my mistake! The replacement 3TF7 seems to be electrically fragile in that regard. BTW no...that is NOT a criticism, just an observation. I built a SS regulator for the 3TF7 some time ago using an LM-317 and that thing is very robust so I'm probably going to go back to using that.

Kind regards,
Ken