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  1. Replies
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    adding a spring to the base of the whip also...

    adding a spring to the base of the whip also helps prevent damage.
    although the whip may sway a bit more, it doens't affect performance very much
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    410

    linear power supplies can be purchased or they...

    linear power supplies can be purchased or they can be home brewed! It depends on how much involved you want to be!
    Home-brewing is part of being a ham because you learn as you go.
    you can spend...
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    in response to mobile antenna height

    responding to a closed thread!
    Here in the US. minimum line heights are standard at 18 feet. so its unusual you will hit a line unless it has come loose from the pole.
    the major issue you may face...
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    QRP labs qcx radio

    recieved my kit for the QRPlabs qcx radio. (40 meter)
    assembled it in an evening and had a small issue with it.
    solder points are small so you have to be careful soldering it.
    one pin on lcd...
  5. Thread: ground rods

    by gnuuser
    Replies
    15
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    901

    good point and info! as a commercial electrician...

    good point and info!
    as a commercial electrician I have often performed earth resistance tests in preparation for installing ground electrodes.
    although its been said its not related to radio it...
  6. Thread: ground rods

    by gnuuser
    Replies
    15
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    901

    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...
  7. 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...
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    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...
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    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...
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    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...
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    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...
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    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...
  13. Thread: NanoVNA

    by gnuuser
    Replies
    7
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    2,060

    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...
  14. Thread: NanoVNA

    by gnuuser
    Replies
    7
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    2,060

    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...
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    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...
  16. Thread: NanoVNA

    by gnuuser
    Replies
    7
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    2,060

    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...
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    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...
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    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...
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    2,131

    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...
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    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...
  21. Thread: AM Question

    by gnuuser
    Replies
    10
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    1,561

    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...
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    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...
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    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...
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    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...
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    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...
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