[R-390] 26Z5W Tubes - Other Devices?

[Jim Whartenby]

JordanWhich manual are you referring to?JimLogic: Method used to arrive at the wrong conclusion, with confidence.  Murphy 

    On Friday, April 17, 2026 at 11:00:00 AM CDT, Jordan Arndt via R-390 <r-390 at mailman.qth.net> wrote:   

 While I do have a couple of spares, I found that a 1N5408 will simply plug 
in to the tube socket very very tightly, so I added the dropping resistor in 
the Audio deck as per the manual...I have one 390A with the diodes and 2 
with the required tubes...

73...Jordan VE6ZT

----- Original Message ----- 
From: "Alex Hopper via R-390" <r-390 at mailman.qth.net>
To: "R-390 Mailing List" <r-390 at mailman.qth.net>
Sent: Friday, April 17, 2026 9:16 AM
Subject: [R-390] 26Z5W Tubes - Other Devices?


> Hi All,
>
> I am going through an R-390/URR at the moment, and recently experienced a
> shorted (filament to cathode) 26Z5W rectifier tube in the power supply.
> Thankfully I had a spare on hand, and was able to find a few more online 
> to
> keep in my 'stock'.
>
> But this led me to wonder - were there any other devices that used the
> 26Z5W?  I know they are a fairly rare/uncommon tube these days (hence the
> outrageous prices for them), but I have never seen another piece of
> equipment use the 26Z5W.
>
> Just curious.
>
> -Alex
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