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  1. Thread: HYPERLOG 4

    by 5B4AJB
    Replies
    1
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    807

    You might be able to run it under DOSbox...

    You might be able to run it under DOSbox. It's pretty good for games etc, but I'm not 100% sure your serial ports etc will be emulated - you might need to go and find an old laptop for it to run on...
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    1,110

    A nibbler could do the large holes, even if the...

    A nibbler could do the large holes, even if the holes are a bit wonky, they'd be covered up by the meters eventually. A "hole saw" set is useful to have, but they are always the wrong size :D
    ...
  3. Replies
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    1,110

    Tooling like this...

    Tooling like this can be expensive to acquire but give excellent results.
    I have a single one of these type punches, perfect for fitting RF sockets. It may not get used a lot, but its satisfying to...
  4. Sounds like you could have a short somewhere on...

    Sounds like you could have a short somewhere on the coax lead.
    It might be worthwhile opening the radio and inspecting the coax socket too...
  5. Thread: h

    by 5B4AJB
    Replies
    3
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    3,042

    Looks like people are (or were) finding them on...

    Looks like people are (or were) finding them on ebay - this might be a good excuse to fit some nice amber LED's instead.
    Calculate the resistor value you'll need here.
  6. Replies
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    1,764

    Many things can generate this kind of signal. ...

    Many things can generate this kind of signal.

    Electronic equipment "warming up"
    Like you said, the activity of meteorites ionising the atmosphere
    FRB's (fast radio bursts) from millions of...
  7. Thread: Battery

    by 5B4AJB
    Replies
    2
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    882

    There's a great Wiki...

    There's a great Wiki article which explains why in the second section.
    Surely a couple of humble 18650's would make a good replacement for a centre-tapped version?
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    2,268

    Installing the program twice would be a solution,...

    Installing the program twice would be a solution, on two screens. You'll have to play around and see if you can run two sdr's in one screen...
  9. Replies
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    1,877

    Could be, you didn't have a CTCSS sub-audible...

    Could be, you didn't have a CTCSS sub-audible tone set on your transmitted signal and you were not making the repeater?
  10. I had a similar problem once, I used a simple...

    I had a similar problem once, I used a simple crystal style radio with a sensitive meter on the output, biased with a battery. Basically a powered field strength meter.
    Will have a rummage round and...
  11. Replies
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    3,597

    You have built a transformer? Check your mains...

    You have built a transformer?

    Check your mains cabling is not running parallel to the metalwork!

    [edit] I had a similar problem, run a metal tube over the last few feet of mains, isolated,...
  12. Replies
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    2,098

    You might have to go to the top of a hill to pick...

    You might have to go to the top of a hill to pick up some repeaters, but you should be able to hear/work several even on a small antenna.

    This repeater coverage map, might help...
  13. Replies
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    2,626

    Personally, I would go with metallised Mylar,...

    Personally, I would go with metallised Mylar, it's far cheaper and filling it with a mixture of hydrogen and oxygen produced by electrolysis of water from solar power is as free as it gets.

    You...
  14. Replies
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    2,626

    They usually burst at high altitude due to...

    They usually burst at high altitude due to extreme internal gas pressure, I think they are permeable, so the gas will eventually leak out and not have enough lift.

    Mylar balloons are not gas...
  15. Replies
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    2,213

    Yes, the quality of most manufactured parts has...

    Yes, the quality of most manufactured parts has declined, have a look on ebay for a replacement, you should find something adequate, if not the same quality.
    Take notice of the mounting point type...
  16. Replies
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    2,041

    I use a blowtorch for through-hole components, do...

    I use a blowtorch for through-hole components, do it outside and forget about the board but the components come off double-time...
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    2,041

    Did you say something about not over-complicating...

    Did you say something about not over-complicating things?

    The "UI" could be as simple as a "galvometer" style needle for tuning and its backlight flashing in time with the tuned frequency.
  18. Every recycling shack should have something like...

    Every recycling shack should have something like this. They're so cheap now, I think I paid £8 for mine, I feel ripped off :)
  19. That's going to be a lot of email. That's...

    That's going to be a lot of email.


    That's going to be a lot of money.

    To summarise, yes, you have a valid point, but I think what you're proposing is unfair (to yourself).

    I'm guilty of...
  20. Thread: KC2MFC intro

    by 5B4AJB
    Replies
    1
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    1,998

    If you have a callsign already, you could try...

    If you have a callsign already, you could try Echolink to get some operating practise in. Some hams will tell you it's not real radio and to some extent it's true, but it really is just an evolution...
  21. Its not really necessary for receiving, it may...

    Its not really necessary for receiving, it may reduce a bit of noise if your antenna is already tuned...
  22. Replies
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    1,372

    Check out "This old Tony"'s attempt on youtube...

    Check out "This old Tony"'s attempt on youtube...
  23. The software reads the radio state when you log a...

    The software reads the radio state when you log a callsign, eliminating the need for you to enter frequency/mode etc.

    As far as I know, a CI-V interface is pretty easy to homebrew and there's tons...
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    1,585

    When you get your Amateur License, you can...

    When you get your Amateur License, you can transmit to another licensed amateur between 144 and 146 MHz (might be 148 now).

    Nowhere else is amateur frequencies on that radio.
  25. Replies
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    1,919

    I think humidity is the main issue here, my shack...

    I think humidity is the main issue here, my shack gets very hot in the summer and consequently, humid at night, even with small (pc) extractor fans running 24h...
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