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Type: Posts; User: Tempstar

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  1. Replies
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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...
  3. 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.
  4. 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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    Just use a 75 ohm dummy load when calibrating.

    Just use a 75 ohm dummy load when calibrating.
  8. 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...
  9. Thread: NanoVNA

    by Tempstar
    Replies
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    887

    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.
  17. 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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    If the VX-8R worked, and the radios talked to...

    If the VX-8R worked, and the radios talked to each other confirming that the UHF side is working, then it could be incorrect tones, having the receive tone on when the repeaters don't output one, or...
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    Will they talk to each other on a UHF simplex...

    Will they talk to each other on a UHF simplex frequency?
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    More likely overloading their front end on their...

    More likely overloading their front end on their radio. Try on low power.
  21. Even though feedlines can carry high voltages...

    Even though feedlines can carry high voltages when transmitting, they pose no real fire hazard from normal operation. With lightning however, all bets are off.
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    Everything has a price, and usually better costs...

    Everything has a price, and usually better costs more. I have an Ultimax reeled up in the shack for a last resort antenna because it receives much but transmits little, I bought a Chameleon Antenna...
  23. Thread: DMR

    by Tempstar
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    6,028

    Handheld Radios TYT UV-380

    TYT UV-380
  24. https://www.streakwave.com/itemdesc.asp?ic=APG5Hac...

    https://www.streakwave.com/itemdesc.asp?ic=APG5HacT2HnD&eq=&Tp=&o1=0

    I use this 3/4 mile away daily.
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    Look up MURS frequencies. You can all use those...

    Look up MURS frequencies. You can all use those with the Baofeng and it will be a better radio than any of the FRS garbage.
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