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meanwhile out in the garage ...

Discussion in 'Announcements & Open Forum' started by kopcicle, Oct 23, 2018.

  1. Low_Boy

    Low_Boy Well-Known Member

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    I always thought you looked like the guy in your profile page. LOL.


     

  2. kopcicle

    kopcicle Sr. Member

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    SB101_125-page-001.jpg
     
  3. kopcicle

    kopcicle Sr. Member

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    her_deskF.jpeg her_desk_R.jpeg
     
  4. kopcicle

    kopcicle Sr. Member

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    So just where the hell am I going to put this??
    singer-fm10cs.jpg
     
  5. 357magnum

    357magnum Sr. Member

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    Kop , not sure ? But it sure is Purty !:D
     
  6. Tallman

    Tallman W9WDX Amateur Radio Member, KW4YJ EXTRA class

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    I have never approved of huffing nitrous or any other chemicals when driving.
    Driving ruins the Rush!
     
  7. Tallman

    Tallman W9WDX Amateur Radio Member, KW4YJ EXTRA class

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    I had a Fluke Differential Volt Meter that had the null meter just like yours.
     
  8. kopcicle

    kopcicle Sr. Member

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    bench.jpeg
     
  9. Redbeard U812

    Redbeard U812 Sr. Member

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    I really like that coffee cup warmer. Wish I had the time and money to set up like that, too busy just staying alive. But I do have the poboy version going on.....CB on desk and Homebuilt antenna and mast. One of these days I'll be able to play like the big boys.(y)
     
    357magnum likes this.
  10. kopcicle

    kopcicle Sr. Member

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    bench_1.jpeg
    notice I still keep the micronta meter around :)
     
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  11. kopcicle

    kopcicle Sr. Member

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    It's alive
    alive.jpeg
     
  12. kopcicle

    kopcicle Sr. Member

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    Heath’s intended frequencies for the carrier oscillator were 3393.6 kHz LSB, 3396.6 kHz
    USB, and 3395.4 kHz for CW. With the specified filter center-frequency of 3395.0 kHz
    the USB & LSB carrier positions would be 1.6 kHz each side of the filter center-
    frequency. Unfortunately, the filter center-frequency may not be exactly 3395.0 kHz, so
    simply placing the carrier injection points equally-spaced from 3395 kHz may not have
    the intended result. In order to determine the filter center-frequency one must balance the
    audio response between both sidebands, measure the USB and LSB carrier frequencies,
    and finally subtract 1⁄2 the difference between the USB & LSB frequencies from the USB
    carrier frequency. The result will be the I.F. filter center-frequency as it exists within
    your particular rig. For example, if the audio response is exactly the same between
    USB/LSB, and the measured USB carrier frequency is 3396.31 kHz while the LSB
    carrier frequency measures 3393.51 kHz, then the difference is 3396.31 - 3393.51 = 2.8
    kHz. One-half the difference is 2.8 ÷ 2, or 1.4 kHz. Then the USB frequency of 3396.31
    kHz - 1.4 kHz = 3394.91 kHz, which in this example is the actual SSB filter center
    frequency.
    I like audio with a tad bit more bottom end response, so I placed my carrier points just a
    little closer to the filter center frequency than the Heath spec., i.e., rather than 1.6 kHz off
    center I went with 1.4 kHz. The frequency of the oscillator is lowered by placing a small
    amount of capacitance in parallel with the crystal, and the frequency is raised by putting
    capacitance in series with the crystal. To put a capacitor in series with the crystal simply
    cut one circuit board trace just before the crystal pin as indicated, and solder the capacitor
    across the opened trace (Figure 4). A 100 pf capacitor in series will move the crystal
    frequency up about 100 Hz, but the same frequency change in the downward direction
    would only require about 10 pf connected in parallel with the crystal.

    Optimizing the Heathkit HW-101, SB100-102 Transceivers
    KB2LJJ JOAO F RIBEIRO,
     
  13. kopcicle

    kopcicle Sr. Member

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    top.jpg
     
  14. BJ radionut

    BJ radionut Supporting Member and 6m addict

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  15. kopcicle

    kopcicle Sr. Member

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    77198422216947er.jpg
     
    357magnum and Shadetree Mechanic like this.

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