[Hammarlund] Using Nuvisters on an SP-600

[Tom NØJMY - AAR7FV]

I've got some used and some n.o.s. Nuvistors, and my testers can test 
them, but no sockets, unfortunately.

73,
Tom

Front Panel Overlays for Ham Radio-
New Can-type Capacitors- HW-16-DX60-Drake-more.
  www.hayseedhamfest.com

DW Holtman wrote:
> Hello,
> 
> I'm in the middle of restoring a Nice SP-600, JX-14. I know the 1st rf amp is a little noisy using a 6BA6. I have seen Chuck Ripple's suggestion to use a 6DC6 as a direct swap, only requiring a re-alignment on the 1st RF amp.
> 
> What I was wondering about is the Engineering Technical Bulletin no. 107. This is a mod to use a Nuvistaplug with two 6DS4 Nuvister tubes in a fixture, that is plugged directly into the 1st RF amp socket. It requires  no other mods except for a realignment of the 1st RF stage. I have put the Bulletin into a PDF if anyone wants a copy, E-Mail me.
> 
> Has anyone used this? Did it make any noticeable difference in the noise level? Does anyone sell the Nuvistorplug?
> 
> Any information or ideas would be very helpful.
> 
> Best,
> DW Holtman
> WB7SSN
> _______________________________________________
> List Administrator: Duane Fischer W8DBF
> ** For Assistance: dfischer at usol.com **
> ----
> http://mailman.qth.net/mailman/listinfo/hammarlund
>