[AMRadio] GG 813 Linear in GE Ham News


W5OMR/Geoff w5omr at satx.rr.com
Tue Oct 11 07:39:21 EDT 2005


I think I'll go back to 6L6's

;-)


Jim candela wrote:

>I'd like to clarify one item I mentioned yesterday. When Geoff W5OMR took
>possession of those 8417's, he had absolutely no idea what crimes had been
>committed decades earlier while using those same two tubes. Those are tough
>tubes (GE that is). Now the evidence is in another unsuspecting hams
>hamshack!
>
>:-)
>
>Jim Candela wrote:
>
>I once knew a Novice ham about 30 years ago who modified a Viking I to have
>an external power supply for the modulator, and 8417 modulator tubes. This
>thing could really modulate that 4D32. One lonely day the thing was put on
>11 meters, and the 5R4's were removed so there was NO B+ or screen voltage
>to the final RF amp...that is until the modulator was driven. This produced
>a very distorted and effective jammer that occupied all 23 channels and then
>some. Another ham cam by who could play the harmonica. You could say this
>was DSB without carrier, and overdriven to the limit for maximum splatter
>effect.  I forget the name of that troublemaker, but my good buddy W5OMR is
>using those same two 8417 tubes today in his Titanic speech amplifier.
>
>Jim
>




More information about the AMRadio mailing list

This page last updated 13 Dec 2017.