6BA7 sub

[NR5A]

Hey guys I was given a NC-300, it had been taken apart 2 years ago and painted. My mission put it back together, restring the slide dial pointer. It was dead when plugged in and I found 3 bad tubes. Also have several new tubes to swap out. The 6BA7 is really bad but I don't have one. Is there a tube I can sub till I can get a new one. I'd sutre like to hear somthing come out of the spkr tonite.

Jerry - NR5A

[WD5JKO]

Jerry,

  The 6BA7 pentagrid converter tube with a 9 pin base is a lone wolf, i.e. no sub. I recall seeing broadcast band radios where someone made an adapter to use a 6BA7 in place of a 6BE6. You could do the reverse, but the extra wire length will cause problems as you go up from broadcast band.

  I suggest you wait for a 6BA7 (they are not rare), and if you want to hear audio from that radio, use a screwdriver touched to a low level audio stage so you can hear a 60 HZ buzz in the speaker. 

Jim
WD5JKO

[KM1H]

The 6BA7 was a fairly short lived tube (in production and service life) that didnt live up to expectations.

Its either live with it or go with a better mixer such as a dual triode conventional or Pullen style, or a 7360 or TV version beam deflection tube.

Carl

[KE6DF]

They seem pretty cheap on ebay.

Here is a guy with four NOS tubes for sale:

http://cgi.ebay.com/4-VINTAGE-NOS-SYLVANIA-6BA7-TUBES-TUBE-MADE-USA-/180526645984?cmd=ViewItem&pt=Vintage_Electronics_R2&hash=item2a083a02e0

[k4kyv]

Most of the on-line tube vendors have  them, and they are not expensive.  Antique Electronic Supply at tubesandmore.com also has them.

I have been using AES more lately.  My last couple of tube orders using on-line vendors that previously had provided good service were sporadic in processing  the order.  I eventually got my tubes after several weeks of waiting, but it took multiple phone calls and e-mail exchanges, and they had all sorts of excuses why they didn't process the order right away.

[N8UH]

Most of the on-line tube vendors have  them, and they are not expensive.  Antique Electronic Supply at tubesandmore.com also has them.

I have been using AES more lately.  My last couple of tube orders using on-line vendors that previously had provided good service were sporadic in processing  the order.  I eventually got my tubes after several weeks of waiting, but it took multiple phone calls and e-mail exchanges, and they had all sorts of excuses why they didn't process the order right away.

I'm with you there. Although AES has unfortunately shifted focus away from radio, they still have a pretty good selection, and they always seem to ship orders promptly. Just my experience. YMMV

[k4kyv]

I'm with you there. Although AES has unfortunately shifted focus away from radio, they still have a pretty good selection, and they always seem to ship orders promptly. Just my experience. YMMV

What do you see as their focus now?

Although I still order from them from time to time, I don't get their catalogue in the mail like I used to.  Most of my orders are on-line, so I just search for the specific item, and haven't really noticed a change in "focus".

I have noticed some electric guitar and high end audio stuff in their inventory.  Are they now catering to electric guitar enthusiasts, high-end audio buffs, audiophools or all the above?  Have they started carrying $600 a.c. power cords and oxygen-free copper speaker cables yet?

[ka3zlr]

Yea an those Acoustical High End Electrolytic Condensers they have a Yellow body and Green leads....

[N8UH]

I'm with you there. Although AES has unfortunately shifted focus away from radio, they still have a pretty good selection, and they always seem to ship orders promptly. Just my experience. YMMV

What do you see as their focus now?

Although I still order from them from time to time, I don't get their catalogue in the mail like I used to.  Most of my orders are on-line, so I just search for the specific item, and haven't really noticed a change in "focus".

I have noticed some electric guitar and high end audio stuff in their inventory.  Are they now catering to electric guitar enthusiasts, high-end audio buffs, audiophools or all the above?  Have they started carrying $600 a.c. power cords and oxygen-free copper speaker cables yet?

From their website, I have notice a much larger emphasis on the vintage electric guitar folks. I find it a bit hard to wade through it all looking for radio parts. But, that must be where the money is.

Fortunately, they haven't started selling $485 wooden knobs for the audiophools:
http://www.museumofhoaxes.com/hoax/weblog/comments/4309/

[sndtubes]

You guys do have a AM Fone member who is a full time tube vendor........

[K6IC]

AND,  Mike,  it took a while,  but I found your Tube website:

http://www.vacuumtubes.com

You are very subtle.  Will try your service the next time I need tubes.   73  Vic

[sndtubes]

AND,  Mike,  it took a while,  but I found your Tube website:

http://www.vacuumtubes.com

You are very subtle.  Will try your service the next time I need tubes.   73  Vic

Ha Ha, thanks, Vic.  I don't like to blow my horn much, but I don't think anyone here really knows......
I certainly won't use this site or any other for "advertising".  I think doing that is kind of low class.  I know of another vendor who is a tube collector and is constantly promoting himself on the tube collector reflector......

thanks, 73,
Mike WB0SND

[KM1H]

I know of another vendor who is a tube collector and is constantly promoting himself on the tube collector reflector

And elsewhere....  If you really want to wind him up offer to provide a copy of his Jackson tube tester settings from his overpriced book.

Carl

[sndtubes]

I know of another vendor who is a tube collector and is constantly promoting himself on the tube collector reflector

And elsewhere....  If you really want to wind him up offer to provide a copy of his Jackson tube tester settings from his overpriced book.

Carl

Ha Ha Ha!  You know who it is!!

[ke7trp]

AES is now focused on musicians.  They have some stock for parts we need but nobody there knows anything about radio. I buy from them as they are a few miles from the house. Most Hams wont buy from them and just talk bad about them. One major reason is that they have no store front and they want to ship to you even though you are in town. They have a will call but its open only a few hours a day and you cannot get anything same day..

C