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I'm old or something

Discussion in 'Ham Radio Discussions' started by KL7AJ, Oct 7, 2019.

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  1. KD8DEY

    KD8DEY Ham Member QRZ Page

    Was that Pre-Papyrus?
     
  2. AA7EJ

    AA7EJ Ham Member QRZ Page

    My first and only OC170 cost one day wages in fifties.
    It was NOT Chinese made then.

    But we had boxes of "surplus" tubes , including black metal US 6K7 - used for decorations...
    Used in home brew 10W CW TX for 80 meters.
    Made my first DX contact with it - from OK to OZ !

    73 Shirley
     
  3. WA9SVD

    WA9SVD Ham Member QRZ Page


    Remember, yes, but that was AFTER my time.:rolleyes:
     
  4. WZ7U

    WZ7U Ham Member QRZ Page

    Clearly never took the brown acid
     
  5. WA9SVD

    WA9SVD Ham Member QRZ Page


    I never did it, nobody saw it, and you can't prove it. And I'm sticking to that story.;):p:rolleyes:
     
    WZ7U likes this.
  6. SM0AOM

    SM0AOM Ham Member QRZ Page

    Schematic from a Swedish journal in 1958 about the introduction of the OC170.
    Shows a self-excited mixer for "short-wave"

    upload_2019-10-15_14-58-58.png

    Price-list from 1959 showing prices for the OC170 and OC171:
    upload_2019-10-15_14-58-37.png

    The single-unit price for the OC171 roughly corresponds to 1/2 day's wages in 1959
    for a male worker in the radio-repair business, and 2/3 day's wages for a female...

    73/
    Karl-Arne
    SM0AOM
     
  7. WZ7U

    WZ7U Ham Member QRZ Page

    So, did we decide if he's old, or something? Or both? :p
     
  8. WA6MHZ

    WA6MHZ Subscriber QRZ Page

    I blew up my 1973 Heathkit HD-10 keyer at the San Diego Hamfest. Two 2N408s were blown. I plugged in a pair of 2N2907s and they worked fine
     
    VK6ZGO likes this.
  9. VK6ZGO

    VK6ZGO Ham Member QRZ Page

    It's always been my rule----If they have the same number of pins, are about the same size, and are the same "family" (NPN or PNP) , they will probably work in most non critical circuits.:D

    Leading on from that, but perhaps a bit "off topic":-

    Have you noticed , as I have, over the years, how manufacturers will use the same device in critical & non critical circuits to reduce the number of types they have to stock.
    In many cases, you can steal one from the non-critical spot to fix the more "touchy" one, & use a 2N2222, BC108, or whatever, in the former position.
     
  10. AA7EJ

    AA7EJ Ham Member QRZ Page

    I was once (1970) happily employed by an electronic outfit as a tech.
    Had a "job" sorting and color coding transistors , they may have been 3904 , according the beta.
    We were making "stuff" to put inside old Liberty ship being converted from sugar cane carrier (!) to "military service".
    The electronic was ho - hum. but crawling around "one way ship" was fascinating.

    Trivia and Liberty ship quiz

    They were allegedly buidl at the rate of around 3 a day
    And why they were called "one way ships"?

    Hint - nothing to do with U-boats activities

    73 Shirley
     

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