802 tube applications

[k7mdo]

Pawing around in my stash of old tubes I ran across a pair of NIB 802's.  In looking them up I was surprised just how little power dissipation they could tolerate....  somewhat surprised I guess because of their overall size.

I googled them up and found only one circuit diagram for them.  The circuit used three of them, one for an oscillator, one for frequency multiplier followed by another for amplifier.... to produce 2-3 watts (AM modulated) rf.

Does any currently "in use" boat anchor use these or am I really looking at dust collectors of the future?
 73

[Opcom]

well, 10W tube. Nice looking. Interesting that there's an application with a 200V positive suppressor voltage. It's nice and linear. There should be many other published uses beside that one that don't require power where these characteristics are an advantage. Finding them might be a chore. Here are likely QST articles. Can't help with what gear uses them.

   

    Aug 1943 - QST (Pg. 14)
    Wired Wireless in Civilian Defense

    Author: Wightman, Perry
    Article: QST Archive [PDF]
    Keywords: TUBE TRANSMITTER 6C5 6SK7 802 6C5 6L6
    Report a problem with this entry   

    Aug 1939 - QST (Pg. 26)
    Portable-Emergency Transmitters: A Portable 3.5-, 14- or 28-Mc 'Phone or CW

    Author: Tappan, T.E., W8AVD
    Article: QST Archive [PDF]
    Keywords: TUBE 6F6 6V6 802 6J7
    Report a problem with this entry   

    Nov 1939 - QST (Pg. 54)
    The Portable at W7AW

    Author: Iversen, I. Vee, W7AW
    Article: QST Archive [PDF]
    Keywords: TUBE TRANSMITTER 802 809 5Z3
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    Feb 1938 - QST (Pg. 48)
    Audio Peak Limiter for Speech Amplifiers
    (Hints and Kinks)

    Author: Bartlett, M. C., W9JHY
    Article: QST Archive [PDF]
    Keywords: MODULATION TUBE 6C5 6H6 802
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    Feb 1937 - QST (Pg. 17)
    Medium-Power Pentode Transmitter Smooth Break-In Operation

    Author: Goodman, Byron, W1JPE
    Article: QST Archive [PDF]
    Keywords: TUBE RK25 802 RK20 804 6J7 6C5 6F6 80 5Z3
    Report a problem with this entry   

    Feb 1937 - QST (Pg. 37)
    More DX Per Dollar, Part I

    Author: Perrine, Jr., Charles D., W6CUH
    Article: QST Archive [PDF]
    Keywords: TUBE 802 6L6 100TH 250TH
    Report a problem with this entry   

    Mar 1937 - QST (Pg. 16)
    A 75-Watt Output Transmitter or Exciter Combining Band-Switching and Plug-In Coils

    Author: Grammer, George, W1DF
    Article: QST Archive [PDF]
    Keywords: TUBE 89 RK25 802 RK20 804
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    Aug 1937 - QST (Pg. 37)
    A Deluxe 'Phone Transmitter with Grouped Controls and Cable Tuning

    Author: Baraf, S.L.
    Article: QST Archive [PDF]
    Keywords: TUBE 802 RK25 804 RK20 805 6C6 80 83 838 2A3 6C6 866
    Report a problem with this entry   

   

    Jan 1936 - QST (Pg. 11)
    Transmitters for Ten Meters

    Author: Grammer, George, W1DF
    Article: QST Archive [PDF]
    Keywords: TUBE 89 802 50T 59 46 RK19
    Report a problem with this entry   

    Apr 1936 - QST (Pg. 41)
    Open-Type Transmitter Construction for Small Floor Space

    Author: Goodman, Byron, W1JPE
    Article: QST Archive [PDF]
    Keywords: TUBE 802 RK20 50T
    Report a problem with this entry   

    Aug 1936 - QST (Pg. 9)
    Licking the Crystal Control Problem on the Ultra-High Frequencies

    Author: Kirby, Frank, W6WI
    Article: QST Archive [PDF]
    Keywords: TUBE TRANSMITTER 6A6 802 801 50T
    Report a problem with this entry   

    Oct 1936 - QST (Pg. 11)
    A Medium Power Transmitter for 7, 14 and 28 Mc

    Author: Grammer, George, W1DF
    Article: QST Archive [PDF]
    Keywords: TUBE 89 RK25 802
    Report a problem with this entry   

    Oct 1936 - QST (Pg. 24)
    5-Meter Crystal-Control With Push-Pull 800 Output

    Author: Reinartz, John L., W1QP
    Article: QST Archive [PDF]
    Keywords: TUBE TRANSMITTER 42 802 56 800
    Report a problem with this entry   

[VE3AJM]

The RCA AT-3 transmitter uses them in the Master oscillator circuit to drive a 807 in the IPA. 2x 813s modulated by 2x 805s.

Al VE3AJM

[W7TFO]

Their real forte is in use as an oscillator.  Very stable and long-lived.

One can easily build a second stage with one, supressor modulated, then on to a linear amp for AM.

73DG

[Opcom]

It's really a good tube. I liked the  "Feb 1938 - QST (Pg. 48)  Audio Peak Limiter for Speech Amplifiers" and I wonder what might have replaced it for audio that has as much linearity?

[k7mdo]

I am convinced to keep them in the active box!  Along with my 860's.... a project still accumulating parts for a TNT, maybe use them someday....

Thanks