1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
6SK7 / 6SK7GT and Other Glass/Metal Tubes
Chas
Senior Member
****
Posts: 658
Threads: 8
Joined: Apr 2018
City: S. Dartmouth State, Province, Country: MA
#8

12-16-2020, 05:00 PM
Radios that have had metal/glass swaps require a bit of care during a triage. Not all metal tubes can "play" in a respective socket. A "Glass Only" socket may have pin #1 re-assigned to a B+ dropping resistor or some other "shocking" connection.

I got that as a painful lesson servicing a set at 12yo., gave myself a life-long rule, glass into glass and metal into metal, never mix the two... chas
Pliny the younger
“nihil novum nihil varium nihil quod non semel spectasse sufficiat”
Find
« Next Oldest | Next Newest »


Messages In This Thread
RE: 6SK7 / 6SK7GT - by Nathan Slingerland - 12-16-2020, 12:52 PM
RE: 6SK7 / 6SK7GT - by Phlogiston - 12-16-2020, 01:11 PM
RE: 6SK7 / 6SK7GT and Other Glass/Metal Tubes - by Chas - 12-16-2020, 05:00 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM
40-150 General questions
Good thing you're a good electrician ... the pictures show a lot of rewiring in your future! Take care and BE HEALTHY!...GarySP — 11:52 AM

[-]
Who's Online
There are currently 3704 online users. [Complete List]
» 1 Member(s) | 3703 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment