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Type: Posts; User: Tempstar

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  1. Replies
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    If I were starting out with a handheld, I would...

    If I were starting out with a handheld, I would probably look at something with UHF/VHF and a digital mode to try, like an MD-UV380 or similar. Don't spend a lot initially as you will eventually...
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    To do away with licensing would do away with...

    To do away with licensing would do away with amateur radio, just as it did with CB. No one would want to listen to all of the garbage.
    I'm an Extra but to be fair I'm also a broadcast engineer, so...
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    984

    That looks like an old military mast I once had...

    That looks like an old military mast I once had mounted on a trailer. You may never find the maker as they were contracted out.
  4. Thread: FT8 problems

    by Tempstar
    Replies
    2
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    1,068

    I had to look up that cable. I think you only...

    I had to look up that cable. I think you only have audio there. You need the USB connection for CAT control.The only Yaesu I own is the 991a and it uses a USB cable for everything. A quick search...
  5. Thread: Computer OS

    by Tempstar
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    1,560

    Windows has the advantage of more software...

    Windows has the advantage of more software available, but what is available on Linux is great to use home built computers and Raspberry Pi platforms.
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    You're on the right track. The tuner presents...

    You're on the right track. The tuner presents 50-52 ohms to the final output stage of the radio to make it happy and prevent reflected power from heating the finals to the point of destruction. Since...
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    I helped a friend install a fiberglass flag pole...

    I helped a friend install a fiberglass flag pole years ago that had a Chameleon antenna inside. He gets good results.
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    AV-18 will do a better DX job. End fed is...

    AV-18 will do a better DX job. End fed is directional. Depends a lot on what you want to do.
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    One ground rod isn't sufficient. One on each side...

    One ground rod isn't sufficient. One on each side of the house all interconnected will help by giving the charge multiple low resistance paths to ground. Our transmitter site has 60 one hundred foot...
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    Portable Radios Do yourself a favor and get a 100 watt first rig....

    Do yourself a favor and get a 100 watt first rig. QRP takes practice and can be frustrating. Something smaller like a 991a world serve you better and is small enough to take in the field. It has the...
  11. Comet GP-6 has a good trade off decent gain in a...

    Comet GP-6 has a good trade off decent gain in a one piece design.
  12. Never heard of anyone, ever, ID'ing a crossband...

    Never heard of anyone, ever, ID'ing a crossband radio. When you ID you are ID'ing both radios at the same time. I feel like KW has the feature for using the 71a as a stand alone crossband repeater,...
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    I tried the 75 ohm load on my Nano and saw what...

    I tried the 75 ohm load on my Nano and saw what you are talking about. My large VNA will normalize on any impedance you feed it it, but the Nano won't. Like you, I've overlooked the Smith Chart too...
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    At least 33'

    At least 33'
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    1,740

    Just use a 75 ohm dummy load when calibrating.

    Just use a 75 ohm dummy load when calibrating.
  16. Chameleon with MIL whip, or CB whip. Just...

    Chameleon with MIL whip, or CB whip. Just remember, any vertical will be a compromise and will require a radial system to be the most effective. Even an end fed would be a better choice, configured...
  17. Thread: NanoVNA

    by Tempstar
    Replies
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    2,264

    We have a $60,000 dollar VNA at work, and I have...

    We have a $60,000 dollar VNA at work, and I have a nano as well. There is no comparison to the capabilities, but the nano is within a few points of accuracy of our R&S. Well worth the $72 asking...
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    Base Radios That looks like a low power reset to me as well.

    That looks like a low power reset to me as well.
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    Having extra ground plane provided by the large...

    Having extra ground plane provided by the large metal box will be fine. Great idea by the way.
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    You are on the right track. I haven't used a Nano...

    You are on the right track. I haven't used a Nano yet but they are on my radar. Testing and tuning with a decent instrument will teach you more about antenna theory and what works versus what does...
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    Re

    If you're getting 60 miles you have about reached out as far as you can. We do have a repeater in my area that is 1600' and will do 75 miles, but there aren't that many out there that high.
    Height...
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    Not to state the obvious, but you never know: Are...

    Not to state the obvious, but you never know: Are you using your RF gain at all?
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    I'm assuming you're dealing with analog...

    I'm assuming you're dealing with analog frequencies and my best guess is that you have the receive PL on and the repeater does not output the tones. If you're doing digital, double check the color...
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    Base Radios Sounds like the button on the mic or transmit...

    Sounds like the button on the mic or transmit inhibit is on in the menu, assuming you are transmitting on a band the radio will transmit on.
  25. Chameleon CHA-HYBRID and 66' of wire. Will work...

    Chameleon CHA-HYBRID and 66' of wire. Will work even laid across the roof.
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