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    Is the tower capable of repeating your signal, it...

    Is the tower capable of repeating your signal, it may be digital only.

    Search online for the callsign of the tower, you should find access details easy enough...
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    It might be worth going for a mobile whip, you...

    It might be worth going for a mobile whip, you can reuse it on the car then...
  3. Thread: Getting Started

    by 5B4AJB
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    The European calling frequencies for 2m are...

    The European calling frequencies for 2m are 144.300 for USB and 145.500 for FM
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    A dipole for 2m won't give you much gain, you'll...

    A dipole for 2m won't give you much gain, you'll probably lose whatever signal you do get down the coax on the way to the radio.
    It might be worth a try as an experiment, but don't expect much DX...
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    169

    How big are we talking? a 3-band VHF or 5-band HF...

    How big are we talking? a 3-band VHF or 5-band HF antenna?
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    359

    80m might be tricky inside, but a 1.5m diameter...

    80m might be tricky inside, but a 1.5m diameter works well on 20, it will tune up on 40 but the efficiency is a fraction of a percent, it does work but is rather deaf on 40m.

    There are hams with...
  7. That will "only" affect the radiation pattern - I...

    That will "only" affect the radiation pattern - I say only because the radiation patter is everything. Yes, the centre will give you the most even pattern, which is what you want for a mobile...
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    Long wires are notorious for noise - in and out....

    Long wires are notorious for noise - in and out. Have a go at making a magnetic loop which you can use in the shack. The only "expensive" part is the variable capacitor.
    For 100W on 20m - 10m, with...
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    They are more or less interchangeable, 99%...

    They are more or less interchangeable, 99% compatible - the differences will be the spacing between the plugs, impedance of the insert, maybe the Voltage fed to the insert, that's pretty much all...
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    I've always wondered how a cavity filter would...

    I've always wondered how a cavity filter would improve one of those handies, given that they overload so easily on a big antenna.
    A 70cm cavity is not beyond homebrewing, while a 2m one isn't...
  11. You have a DATA jack on the back panel which...

    You have a DATA jack on the back panel which could accept any kind of noise for transmitting.
    A computer with a serial port is easiest to hook up for PTT

    Serial PTT interface...
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    Not to mention communication between lasers,...

    Not to mention communication between lasers, providing you have line of sight.

    Video, images, text, voice, pretty much anything can be sent down a pulse of light, which I don't believe you'd need...
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    You best initial approach is to try and find a...

    You best initial approach is to try and find a local club and have a chat with the members there, maybe they can set you up for a course and exam to get your ticket.
    Visit your local library and...
  14. I made up a multi-connector heatshrink creation...

    I made up a multi-connector heatshrink creation for a handheld once comprising of 3.5mm speaker jack, a 2.5mm microphone jack and a DC power jack, all spaced correctly with lots of heatshrink,...
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    An aluminium plate on the outside with a socket...

    An aluminium plate on the outside with a socket on it seems the most practical method for permanent installation with a hole cut into a mains socket blanking plate inside.

    However, more connectors...
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    Well, it won't have quite the same value but you...

    Well, it won't have quite the same value but you may be able to tweak it with spacing the windings or adjusting the capacitance.

    Go get some more 28 guage, it will eliminate issues when final...
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    He's not a patch on Irving Finkel :D

    He's not a patch on Irving Finkel :D
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    You might want to do your test when nothing's on...

    You might want to do your test when nothing's on TV, you neighbours are out and you're not expecting any mobile calls ;)
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    Hmm, total RF chaos eh? Build yourself a...

    Hmm, total RF chaos eh?

    Build yourself a simple ioniser, parallel a neon with a small capacitor and connect one end to ground via a small spring.
    Adjust the gap between the other end of the neon...
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    G0OEK sent me this on DRM a long time ago, maybe...

    G0OEK sent me this on DRM a long time ago, maybe its something like you describe...
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    You might want to remove & measure some of the...

    You might want to remove & measure some of the capacitors near that inductor.
    Don't buy cheap ones off ebay either, get yourself some real "low ESR" types if its for a radio...
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    If static discharge can travel, maybe half a mile...

    If static discharge can travel, maybe half a mile or a mile through open air, what effect do you think a 3mm circuit breaker gap will have?

    Set up a lightning conductor somewhere as high as you...
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    You could build an amp with minimal filtering and...

    You could build an amp with minimal filtering and flaky soldering yourself, or design a really good circuit and have pristine soldering.
    Linears really aren't that complicated, there must be a...
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    Mobile Radios here...

    here's the manual, maybe you have ARTS turned on?
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    Check the baud rate to begin with, is it set in...

    Check the baud rate to begin with, is it set in hardware on the radio and in software on the terminal?
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