Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

6A3 replacements
#1

I finally got my Philco 116X working, but with a borrowed pair of 6A3 output tubes. Reception and audio quality are outstanding.

Short of buying a working pair of 6A3s at current prices (thanks, audiofools) what might be recommended as replacements? 6B4G is electrically the same tube, octal base, same high prices. 

Changing the tube sockets / types is heresy to many on the forum, but this set is no beauty queen. I'd like to enjoy the set as work bench company. All electronics would be completed neatly and to a high standard, as has the rest of the chassis.

I considered using a single 6AS7 with its two sections in push-pull, or a pair of triode connected 807s with operating voltages accordingly changed. Those types are already on hand, in storage. I believe those choices could approximate present current draw from the power transformer, audio output transformer impedances, and available audio power output.

All help is greatly appreciated!

Keep warm, this weekend.

-O.B.
#2

I don't know what the audiophool prices are but you could get a pair of these used. I've bought from him before and had no problems.
https://docs.google.com/spreadsheets/d/1...0foD#gid=1
#3

Bob Dobush got me my pair of 6B4 for a very reasonable price.
I don't see any reason to screw up a perfectly good radio.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#4

+3 for Bob Dobush... Icon_thumbup Icon_thumbup

--
Ron Ramirez
Ferdinand IN
#5

I have used Bob  Icon_thumbup No problems. One tube was noisy, he was quick to make it right. Very fast communication. And reasonable.
Joe

Joe Bratcher near Louisville, KY




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
So far still no broadcast, I am posting pictures of #14 Oscillator and also a resistor #27 which connects to an XXL tube...osanders0311 — 04:02 PM
Part numbers to model cross
I believe there is that document, and I think we might have it in the Library.morzh — 03:29 PM
Philco 42-345 Restoration/Repair
Ok MrFixr55,  I have tried the DeoxIT D5 on the band switch and even though it has relieved the tension I felt when turn...osanders0311 — 11:11 AM
Part numbers to model cross
Is there a reference somewhere where you can punch in Philco part numbers and see what models those parts were used in?Jim Dutridge — 10:17 AM
Philco 42-345 Restoration/Repair
Hi OSanders, Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM
5U4 vs 5Z4 tubes
I think that RCA and GE introduced metal tubes in the USA in 1936.  I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM
Philco 42-345 Restoration/Repair
Vlad95, Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM
5U4 vs 5Z4 tubes
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM
Philco 42-345 Restoration/Repair
Thanks Rod, "When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM
Philco 42-345 Restoration/Repair
RodB :beerchug:Vlad95 — 10:22 AM

[-]
Who's Online
There are currently 1018 online users. [Complete List]
» 1 Member(s) | 1017 Guest(s)
Avatar

>