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In Reply to: RE: Or my wrong to say it LOL..Anyway I have been comparing it to one of my Hf50s. posted by lokie on September 15, 2016 at 07:37:50
" This is kind of tricky because you will notice that the output tubes source go directly to the GZ34.I plan on doing the Dave Gillepsie mod to all four of my Hf50s and my one pair of HF60s.If you add a choke series with the rectifier up to the output trafo B+,I would use the .5hy at 300ma as that will fit under the chassis..Wheezer things we should use a 30hy to 40 hy for the earlier stages so I'm looking into that as well.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Follow Ups:
I made the assumption that you are modding all your HF-50's to 6550's?
Any comment on using KT77's and following the front end and power supply of Dave's mod?
A couple of questions:
Are you increasing the 20mfd caps on the B+ due to the .5Hy choke?
Is the DC resistance of the .5Hy choke the same as the 3Hy on DG's mod, as this would impact the values of the R24.
Lokie
Iam modding it to 6550s.. I use a 51uf film cap,a big solen can and I will be using a choke as well..Keep in mind the that the originals were a pair of 20uf lytics in parallel for the first..The output trafo goes directly into the rectifier and the 51uf Solen.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
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