I just found several 829B tubes - believe it or not in my garage - I
....[snip]....

So can someone tell me what they would have been used for?
Something tells me they're a VHF power tube.
....[snip]....

A nice article starting on page 40 of the August, 1949, issue of QST
describs a two-tube (6AG7 oscillator [26MHz xtal]/doubler and 829
amplifier) for 75 watts output in the 6-meter band.

--Myron.
--
Five boxes preserve our freedoms: soap, ballot, witness, jury, and cartridge
PhD EE (retired). "Barbershop" tenor. CDL(PTXS). W0PBV. (785) 539-4448
NRA Life Member and Certified Instructor (Home Firearm Safety, Rifle, Pistol)

Dave, as I recall there was a design in one of the ARRL books..... maybe VHF
manual that included an 829B. I also recall Motorola using this in a very
old radio, don't remember exactly. Anyway I think it's good for 40-50 watts.
I wouldn't mind having them if your looking to part with them.

Clay


"Dave" wrote in message
news.com...
Hi all,

I just found several 829B tubes - believe it or not in my garage - I
must have got them in a box of stuff at a ham fest at one time.
A check on Ebay shows they're pretty much worthless for the sake
of dollars, but they're so COOL! With the two plate caps that are
actually just stiff pins, they look like little Martians.

I put a pair on my office credenza just to look geeky cool. Fresh
out of the box as NOS they look amazing - just like they were made
yesterday. It's a pity they have no value - maybe as a homebrew
project??

So can someone tell me what they would have been used for?
Something tells me they're a VHF power tube.

Any application as a one-tube QRP rig of any sort? Any stories
about using them in the past? I've built a lot of little rigs over the
years, but never knew about the 829

Thanks,

Dave

I just found several 829B tubes - believe it or not in my garage - I

snip

So can someone tell me what they would have been used for?
Something tells me they're a VHF power tube.

Any application as a one-tube QRP rig of any sort? Any stories
about using them in the past? I've built a lot of little rigs over the
years, but never knew about the 829


The datasheet is he

http://www.mif.pg.gda.pl/homepages/f...049/8/829B.pdf

A lot of The Radio Amateur's Handbooks of the '50s and '60s had 892B
projects in them. The 1953 edition, immediately to my left as I write this,
has "A 100-Watt RF Amplifier for 50 and 144 Mc." on page 405. It runs
push-pull class-C, up to 120 Watts CW or FM, and 100 Watts AM.

And the following fellow has gone to an awful lot of trouble to use two
829Bs in parallel single-ended triode mode in a stereo amplifier:

http://www.pmillett.addr.com/829b_amplifier.htm

"Geoffrey G. Rochat" wrote:
in elfla.com,

[snip]

: A lot of The Radio Amateur's Handbooks of the '50s and '60s had 892B
: projects in them. The 1953 edition, immediately to my left as I write this,
: has "A 100-Watt RF Amplifier for 50 and 144 Mc." on page 405. It runs
: push-pull class-C, up to 120 Watts CW or FM, and 100 Watts AM.

Gone by the 1955 edition I have. The 1947 ed uses it in 3 2M TX circuits.

I have 3 RCA 829B and 6 or 7 slightly sturdier UK mil CV2666 equivalents,
plus some CV178A / 5894 bottles I intend to use sometime in something:-)

: And the following fellow has gone to an awful lot of trouble to use two
: 829Bs in parallel single-ended triode mode in a stereo amplifier:
:
: http://www.pmillett.addr.com/829b_amplifier.htm

These (Chinese) stereo push-pull amplifiers are commercial products:

http://www.cayin.de/amps_de/endverstarker/929D/929D.htm
http://www.cayin.de/amps_de/vollvers.../500/500mk.htm
http://www.cayin.de/amps_de/endverst...00mk/800mk.htm
http://www.cayin.de/amps_de/endverstarker/800/800.htm

They substitute Russian FU29 or GU29 or US 3E29 in some.

You can get a rough translation by copying & pasting
http://translate.google.com/translate_c?hl=en&u=
in front of the links, with no space between the two.

These seem to be out of production now by the manufacturer;
they used to be on the vaccum tube amplifier link from their English index:
http://www.sparkaudio.com/eproduct.asp

RdM
(operators certificate in 1969 at 17 - never actually got on air - one day!)

On Sun, 08 Feb 2004 14:11:12 +1300, Ross Matheson
wrote:

"Geoffrey G. Rochat" wrote:
in elfla.com,

[snip]

: A lot of The Radio Amateur's Handbooks of the '50s and '60s had 892B
: projects in them. The 1953 edition, immediately to my left as I write this,
: has "A 100-Watt RF Amplifier for 50 and 144 Mc." on page 405. It runs
: push-pull class-C, up to 120 Watts CW or FM, and 100 Watts AM.

Gone by the 1955 edition I have. The 1947 ed uses it in 3 2M TX circuits.

I have 3 RCA 829B and 6 or 7 slightly sturdier UK mil CV2666 equivalents,
plus some CV178A / 5894 bottles I intend to use sometime in something:-)

There used to be a *relatively* popular surplus rig that used three of
them. I remember they were lined up and as I recall the final had a
tuned line output link coupled to the antenna.

Don't remember what it was called. That was nigh onto 40 years ago.

snip

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

829`s were on the beach, D-Day, June 1944...Inside Hallicrafters T-14,
AN/TRC-1 Radios.. used in radio relay set-ups for Comm. back to England...Also
used in the 50`s for Comm from Korea to Japan. Very interesting rig, Tx 50
watts out, Tx Xtal freq = freq/96, Rx (R-19 AN/TRC-1) double conversion, One
Xtal. controlled both conv. mixers.. I.F. 1st 30 to 40 MCS, 2nd 4.5 MCS.Range
70-100 MCS...antenna was a 3 element beam, could be vert. or horz. pol... Last
time i saw one of these Tx in use , (1959) was at Kimpo AFB, Korea. a slow
speed code wheel, was keying the tx on/off.thru the PTT mic. jack...call sign
was O K ( 75 MCS , Z beacon) 73`s Gene WB7NGI (TSGT USAF Retired, Radio
Maintaner)

Lots of discussion about using the 829 for VHF power amplifiers, and
even audio amplifiers and conversation pieces. But I haven't seen
mention here of their use in pulse generators. I have a TS592A/UPM15
pulse generator that uses one in its output stage (not all my test
equipment is very new ;-), and one of the early uses of them was as a
driver in "hard tube" radar pulse modulators, developed fairly early
in WWII. They were used in "Model 3 hard tube pulsers" for example,
where the two sections were run in parallel, outputting well over a
kilowatt during the microsecond long pulse, 0.1% duty cycle. The very
similar 3E29 also get lots of mention in early radar pulser history.
Perhaps someone knows: was the 3E29 an 829 re-designed and/or
specifically tested for use in pulsers? What was the 829 originally
intended for, and when was it first introduced? Who made the first
ones, RCA or someone else?

Cheers,
Tom


"Dave" wrote in message tnews.com...
Hi all,

I just found several 829B tubes - believe it or not in my garage - I
must have got them in a box of stuff at a ham fest at one time.
A check on Ebay shows they're pretty much worthless for the sake
of dollars, but they're so COOL! With the two plate caps that are
actually just stiff pins, they look like little Martians.

I put a pair on my office credenza just to look geeky cool. Fresh
out of the box as NOS they look amazing - just like they were made
yesterday. It's a pity they have no value - maybe as a homebrew
project??

So can someone tell me what they would have been used for?
Something tells me they're a VHF power tube.

Any application as a one-tube QRP rig of any sort? Any stories
about using them in the past? I've built a lot of little rigs over the
years, but never knew about the 829

Thanks,

Dave

Tom Bruhns wrote:

Lots of discussion about using the 829 for VHF power amplifiers, and
even audio amplifiers and conversation pieces. But I haven't seen
mention here of their use in pulse generators. I have a TS592A/UPM15
pulse generator that uses one in its output stage (not all my test
equipment is very new ;-), and one of the early uses of them was as a
driver in "hard tube" radar pulse modulators, developed fairly early
in WWII. They were used in "Model 3 hard tube pulsers" for example,
where the two sections were run in parallel, outputting well over a
kilowatt during the microsecond long pulse, 0.1% duty cycle. The very
similar 3E29 also get lots of mention in early radar pulser history.
Perhaps someone knows: was the 3E29 an 829 re-designed and/or
specifically tested for use in pulsers? What was the 829 originally
intended for, and when was it first introduced? Who made the first
ones, RCA or someone else?

Cheers,
Tom


"Dave" wrote in message tnews.com...


Hi all,

I just found several 829B tubes - believe it or not in my garage - I
must have got them in a box of stuff at a ham fest at one time.
A check on Ebay shows they're pretty much worthless for the sake
of dollars, but they're so COOL! With the two plate caps that are
actually just stiff pins, they look like little Martians.

I put a pair on my office credenza just to look geeky cool. Fresh
out of the box as NOS they look amazing - just like they were made
yesterday. It's a pity they have no value - maybe as a homebrew
project??

So can someone tell me what they would have been used for?
Something tells me they're a VHF power tube.

Any application as a one-tube QRP rig of any sort? Any stories
about using them in the past? I've built a lot of little rigs over the
years, but never knew about the 829

Thanks,

Dave


Don't have answeres to all those questions but the 3E29 had a "better"
cathode to handle
the peak current requirements..

Bill K7NOM

(Tom Bruhns) wrote in message om...

Lots of discussion about using the 829 for VHF power amplifiers, and
even audio amplifiers and conversation pieces. But I haven't seen
mention here of their use in pulse generators.

Or CRT drivers (in the AN/APS-44 aircraft radar, and I think some of
the Navy PPI repeaters).

Perhaps someone knows: was the 3E29 an 829 re-designed and/or
specifically tested for use in pulsers?

Probably. 3E29 was used in the Mk III IFF interogators, circa 1943. I
don't know of any other major uses for the 3E29 (AKA 829A). Real 3E29s
are getting quite scarce, but 829Bs still can be found in biblical
quantities.

What was the 829 originally
intended for, and when was it first introduced? Who made the first
ones, RCA or someone else?

1943, probably RCA, although National Union was apparently an early
second source. 832 was the model for the 829.

William Donzelli

William Donzelli wrote in message
om...
(Tom Bruhns) wrote in message
om...

Lots of discussion about using the 829 for VHF power amplifiers, and
even audio amplifiers and conversation pieces. But I haven't seen
mention here of their use in pulse generators.

Or CRT drivers (in the AN/APS-44 aircraft radar, and I think some of
the Navy PPI repeaters).

Perhaps someone knows: was the 3E29 an 829 re-designed and/or
specifically tested for use in pulsers?

Probably. 3E29 was used in the Mk III IFF interogators, circa 1943. I
don't know of any other major uses for the 3E29 (AKA 829A). Real 3E29s
are getting quite scarce, but 829Bs still can be found in biblical
quantities.

What was the 829 originally
intended for, and when was it first introduced? Who made the first
ones, RCA or someone else?

1943, probably RCA, although National Union was apparently an early
second source. 832 was the model for the 829.

William Donzelli

I've seen references to the fact that the 829B was used in MIT's Whirlwind
computer as core memory drivers, definitely a pulse application. I don't
have any documentation on that, but I do remember some dual plate 829B-like
tubes in the Whirlwind fragments that used to be on display at the
now-defunct Boston Computer Museum. They could have been 3E29s, though, or
even 832s.

The Univac I used 829Bs, as documented here (5/8ths of the way down the
page):
http://ed-thelen.org/comp-hist/BRL61-u3.html

With that complement of tubes you could make one heck of an all-modes
transceiver!