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  1. Thread: NanoVNA

    by Tempstar
    Replies
    2
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    265

    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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    222

    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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    208

    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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    655

    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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    631

    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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    1,119

    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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    1,268

    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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    1,172

    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.
  9. Chameleon CHA-HYBRID and 66' of wire. Will work...

    Chameleon CHA-HYBRID and 66' of wire. Will work even laid across the roof.
  10. Replies
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    3,982

    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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    3,982

    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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    1,343

    More likely overloading their front end on their...

    More likely overloading their front end on their radio. Try on low power.
  13. 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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    3,378

    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...
  15. Thread: DMR

    by Tempstar
    Replies
    3
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    5,529

    Handheld Radios TYT UV-380

    TYT UV-380
  16. 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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    2,512

    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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    2,371

    Realtor transmitter or wireless microphone...

    Realtor transmitter or wireless microphone transmitter comes to mind.
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    1,066

    If there is a DMR repeater around you, you get...

    If there is a DMR repeater around you, you get the mast bang for the buck by having many talk groups on one frequency.
  20. Like Blake said, in read mode the analyzer just...

    Like Blake said, in read mode the analyzer just reports what it sees. Using the cal kit on the far end of the coax should normalize the cable as part of the system,
    Analyzers only check problems up...
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    1,468

    The diode detector in the meter circuit is...

    The diode detector in the meter circuit is directional.
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    2,121

    Handheld Radios Once you make the decision to go for an Amateur...

    Once you make the decision to go for an Amateur ticket, you'll soon learn a wealth of knowledge about how radios operate, and also will get to know other people to communicate with. I have a DMR...
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    1,646

    T and R first: These are where the Spectrum...

    T and R first: These are where the Spectrum Analyzer is monitoring the waterfall, if you go to split mode the T and R will separate by the amount you have the split set for.

    The 4 buttons at the...
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    3,194

    I'm not going to add much here except this:...

    I'm not going to add much here except this: Thanks to the FAA becoming involved in drones and requiring a license to operate as a commercial endeavor, it opens a whole new can of worms for what the...
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    1,771

    "Insulated wire has a different velocity factor...

    "Insulated wire has a different velocity factor than the same bare wire meaning that insulation is not completely invisible to RF."

    Right, VF being 95-99% for insulated copper strand without...
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