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  1. Thread: ground rods

    by gnuuser
    Replies
    12
    Views
    603

    the purpose of most 8 foot ground rods is to...

    the purpose of most 8 foot ground rods is to reach sufficiently moist soil level
    that layer can usually be found between 4 to 6 feet beneath the surface. water itself may conduct current but not...
  2. i know this is an old topic but i believe that...

    i know this is an old topic but i believe that anyone who experiments in antennas and share the results is doing so in the true spirit of amateur radio.
    you are going to run into purists in any...
  3. Replies
    4
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    323

    to start with yes you can convert a computer psu...

    to start with yes you can convert a computer psu for use with ham radios But you have to modify them a little so they output 13.5 volts that your radio wants.
    most radios will run on 12 volts but...
  4. Replies
    2
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    366

    your dipole can be used vertical with quite good...

    your dipole can be used vertical with quite good results but it must be correctly sized and tuned to the frequency you are using
    to make a vertical dipole its often better to use solid wire or...
  5. Replies
    2
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    443

    that's a tough one to answer because so many...

    that's a tough one to answer because so many people have different preferences.
    and it depends on the direction you want to go in learning ham radio.
    a lot of guys buy a radio just to rag chew and...
  6. Replies
    6
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    531

    greetings fngham! it depends on what path you...

    greetings fngham!
    it depends on what path you want to follow in ham radio.
    starting out you will get a lot of recommendations on what radio to choose and what radio to avoid. Many times by serious...
  7. Replies
    22
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    33,718

    Sticky: most people can type faster than they can write...

    most people can type faster than they can write except those who know and have used Gregg short-hand I had to learn it for emergency messaging in the service!
    but what helps me a lot is that Im also...
  8. Thread: NanoVNA

    by gnuuser
    Replies
    7
    Views
    1,956

    you can make any size fixture you want for...

    you can make any size fixture you want for different uses.( I have made different value dummy loads for testing home brew baluns for various transmission lines and cables)
    its not hard to match them...
  9. Thread: NanoVNA

    by gnuuser
    Replies
    7
    Views
    1,956

    all you would need to make a 75 ohm calibration...

    all you would need to make a 75 ohm calibration fixture is the end of an old wireless card antenna like the one pictured below and a 75 ohm carbon resistor.( do not use wire-wound resistor) cut the...
  10. Replies
    8
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    1,120

    external tuners often work well and actually you...

    external tuners often work well and actually you can build them quite easily.
    some from kits are compact and with care are fairly easy to assemble.
    or you can get a list of components and build...
  11. Thread: NanoVNA

    by gnuuser
    Replies
    7
    Views
    1,956

    I purchased the NanoVNA a while back and watched...

    I purchased the NanoVNA
    a while back and watched the you tube videos on it a couple times and read the manual that came with it.
    I havent installed the software in the computer yet and just...
  12. Replies
    9
    Views
    1,182

    dos floppies can be copied to a usb stick or cd...

    dos floppies can be copied to a usb stick or cd using a desktop with floppy and cd.
    once copied it can be installed from the cd or usb( for usb you need a program called unetbootin to create a...
  13. Replies
    14
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    1,954

    i purchased a pixie 2 from this site....

    i purchased a pixie 2 from this site.
    https://www.pixiekits.com/
    you have to go online and download the assembly manual.
    its pretty easy to assemble and low cost.
    its only a half watt transceiver...
  14. Replies
    14
    Views
    1,954

    this site offers the cricket radios in 40 and 80...

    this site offers the cricket radios in 40 and 80 meter. and 30 meter
    they usually come in kits but email the kitters they may build them for you or have them built and sent to you.
    they are easy...
  15. Replies
    2
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    952

    the enthusiasm of the younger generation is...

    the enthusiasm of the younger generation is highly dependant on the participation of the older generation.
    with today's younger generation exposure to technology is bound to have an influx into the...
  16. Thread: AM Question

    by gnuuser
    Replies
    10
    Views
    1,466

    easiest way to explain amplitude is its...

    easiest way to explain amplitude is its application of power or a graphic term (push)
    because it varied the power output into the signal you could envision it as a rubber film stretched across a...
  17. Replies
    1
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    494

    depending on what mode you are using the extra...

    depending on what mode you are using the extra watt may not make much difference in the db level.
    slight mismatch is not a critical factor. if your swr is below 2 to 1 there is very little chance it...
  18. Replies
    0
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    328

    a slinky a slinky what a wonderful toy1

    Have any of you ever tried a slinky antenna?
    I picked up 4 mini slinky's and soldered 2 per side for a slinky dipole. (electrically they are 44 meters in length. but when stretched out only span 30...
  19. Replies
    9
    Views
    1,182

    I use linux and an emulator called dosemu! it...

    I use linux and an emulator called dosemu!
    it will run any dos based program made.
    example our factory just got rid of moore technology themocouple controls.
    and i saved the program and a couple...
  20. Replies
    19
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    5,819

    I dont have my license yet. because testing sites...

    I dont have my license yet. because testing sites keep canceling due to covid scare and doing it online is nearly impossible due to needing proctors.
    most people are avoiding others yet.
    licensing...
  21. Replies
    3
    Views
    862

    if you are running a lot of power its feeding...

    if you are running a lot of power its feeding back from someplace.
    many sensor systems in newer cars are isolated grounding due to sensitivity to electrical noise. therefore it may be inducing error...
  22. Replies
    3
    Views
    854

    there is nothing wrong with using an old mast...

    there is nothing wrong with using an old mast providing it is carefully inspected for damage and or stress marks.
    also providing it is properly guy wired for support.
    a telescoping mast is one...
  23. Replies
    0
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    397

    spiral magnetic loop 40 meters.

    I downloaded plans for a spiral loop magnetic from this site just to try it out and used the 40 meter dimensions
    its an old design used in the ww1 and ww2 era....
  24. Replies
    3
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    1,756

    the type of disconnect you need is one that...

    the type of disconnect you need is one that disconnects both the center core and the shield conductor as well but there is another problem,
    common ground conduction through the chassis and ground...
  25. as long as the chimney is not being used to...

    as long as the chimney is not being used to exhaust heat from a hot water tank or furnace/heater it will be fine.
    plus its a great route for multiple cables, But provide adequate strain relief on...
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