6H6 question

Original Burnedfingers · 21st November 2005, 02:33 AM

I have a 6H6 in an RCA radio and I believe it is a dual diode. Would it be possible to replace it with two single 1n4007 DIODES?
The pin out for the diodes in the 6H6 is pin3 anode 2, and pin 4 is Kathode 2. Pin 5 is Anode 1 and pin 8 is Kathode 1.

tubelab.com · 21st November 2005, 02:55 PM

The 6H6 is a low current diode that is usually used at RF or IF frequencies. It is used as a detector and AGC in an AM radio, and a discriminator in an FM radio. A 1N4007 has far too much capacitance to be used at these frequencies. If you wanted to replace this with a solid state device, I would look for a pair of germanium diodes like 1N34 or 1N60. If you can't find these you might try a 1N914 or 1N4148. These were meant for high frequency use. The tubes are available at any of the places that cater to old radio repair. So are the diodes.

rcavictim · 21st November 2005, 03:09 PM

You could make a socket adapter or replace the socket with a 7 pin miniature and use the much more easily available 6AL5 dual diode tube.

Enzo · 22nd November 2005, 12:27 AM

Or just buy a new 6H6 from AES or someplace similar. They are cheap, like less than $3.

http://www.tubesandmore.com

21st November 2005, 02:33 AM	#1
Original Burnedfingers diyAudio Member Join Date: Nov 2002	6H6 question I have a 6H6 in an RCA radio and I believe it is a dual diode. Would it be possible to replace it with two single 1n4007 DIODES? The pin out for the diodes in the 6H6 is pin3 anode 2, and pin 4 is Kathode 2. Pin 5 is Anode 1 and pin 8 is Kathode 1.

21st November 2005, 02:55 PM	#2
tubelab.com diyAudio Member Join Date: Jul 2005 Location: South Florida	The 6H6 is a low current diode that is usually used at RF or IF frequencies. It is used as a detector and AGC in an AM radio, and a discriminator in an FM radio. A 1N4007 has far too much capacitance to be used at these frequencies. If you wanted to replace this with a solid state device, I would look for a pair of germanium diodes like 1N34 or 1N60. If you can't find these you might try a 1N914 or 1N4148. These were meant for high frequency use. The tubes are available at any of the places that cater to old radio repair. So are the diodes. __________________ Too much power is almost enough! Turn it up till it explodes - then back up just a little.

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21st November 2005, 03:09 PM	#3
rcavictim diyAudio Member Join Date: Jun 2004 Location: Cool end of a soldering iron NW of Toronto	You could make a socket adapter or replace the socket with a 7 pin miniature and use the much more easily available 6AL5 dual diode tube.

22nd November 2005, 12:27 AM	#4
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	Or just buy a new 6H6 from AES or someplace similar. They are cheap, like less than $3. http://www.tubesandmore.com

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