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

[chuck.rippel at cox.net]

Hi Rich et al.  Glad the radio is doing well; that's my goal.  Long term 
reliability !

Sigmapert sells his items on Evil-Bay.  Here is a list of items he 
offers along with their current (09/20/13) links; sort of a 
mini-Signapert "Catalogue" of sorts:

26Z5W replacements:
http://tinyurl.com/nr4a7f2

R-390A replacement for 3TF7 current regulator
http://tinyurl.com/phfl93u

R-390A multi-section electrolytic capacitor kit (C603 + C606)
http://www.ebay.com/itm/331028138133

I've installed each of these items and tested their effectiveness.  All 
are excellent !  His 26Z5W replacements are nothing short of elegant and 
is the cure of choice for all the 26Z5W issues !

Some of you may remember that I made a current regulated, solid state 
3TF7 replacement.  Frankly, Kurts is easier to install and works as 
well.  However, for those who may wish to use it, I would opt to ground 
either pin 9 or pin 1 on the 3TF7 tube SOCKET v/s connecting a wire to 
the body of the insert.

Finally, his electrolytic filter cap/audio output cap (C603 and C606) 
are first quality.  I'll say that my cap rebuilds are as good and look 
original but either are just fine.

--
Chuck Rippel

"Many of the truths to which we cling depend on our point of view."
- Yoda