Search:

Type: Posts; User: 5B4AJB

Page 1 of 20 1 2 3 4

Search: Search took 0.03 seconds.

  1. Replies
    5
    Views
    359

    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...
  2. Replies
    1
    Views
    239

    You might get away with it since the fridge is a...

    You might get away with it since the fridge is a fairly low load, try it and see what the noise level is like...
  3. Thread: ground rods

    by 5B4AJB
    Replies
    15
    Views
    1,368

    The A/C panel should have its own earth rod - if...

    The A/C panel should have its own earth rod - if you do have to connect them together, try using a fusible resistor in series (1W) of, say 1MΩ.

    Nothing is going to protect you from a direct...
  4. You raise an interesting question - capacitor at...

    You raise an interesting question - capacitor at top or bottom?

    I didn't notice any difference, mine was at the bottom inside and at the top outside.

    Can someone model the difference?
  5. Thread: ground rods

    by 5B4AJB
    Replies
    15
    Views
    1,368

    Multiple earth points will naturally generate a...

    Multiple earth points will naturally generate a small Voltage between them, which your radio will pick up.

    If the R.F. field density is high, the induced Voltage is higher meaning more noise to...
  6. Thread: ground rods

    by 5B4AJB
    Replies
    15
    Views
    1,368

    It may work better. There are a lot of factors...

    It may work better.

    There are a lot of factors to consider for an R.F. earth.

    Try loosening/softening the ground with a hosepipe for a few days before you try inserting it.

    I used 1" copper...
  7. Replies
    6
    Views
    631

    They look like they use the same kind of...

    They look like they use the same kind of technology.

    A P.C. power supply may be more inclined to have a better Voltage tolerance, however, switch-mode type supplies always have some kind of...
  8. The Yaesu can be bought for less than 100 in...

    The Yaesu can be bought for less than 100 in working condition, the other stuff is really of interest to collectors/restorers. Modern kit can fit into a shirt pocket if you know what I mean...
  9. Replies
    8
    Views
    749

    if your motherboard has a display output, try...

    if your motherboard has a display output, try using that as one of the monitor outputs and the second on the card?
  10. Replies
    6
    Views
    733

    I'd recommend a scanner to begin with. Don't...

    I'd recommend a scanner to begin with. Don't spend millions, just something simple. If you want to spend millions, buy some good quality coaxial cable and a nice high antenna...
  11. Maybe there's a female (SMA) connector on the...

    Maybe there's a female (SMA) connector on the radio, the adapter you bought has a female end. A male-to-male SMA should fix that...
  12. Thread: diamond x50a

    by 5B4AJB
    Replies
    1
    Views
    590

    Most of the gain you will get from the X50 is in...

    Most of the gain you will get from the X50 is in the use of better coax, plus the height gain.
    Here's a height/horizon calculator, have a play to understand how antenna height affects your horizon....
  13. Replies
    3
    Views
    881

    That's a great project, together with an audio...

    That's a great project, together with an audio amplifier - very practical.
    I helped a budding ham build a TRF trancseiver kit which needed a seperate audio amp.
    We used a scavenged TDA-type audio...
  14. Replies
    1
    Views
    568

    Here (https://www.sigidwiki.com/wiki/FT8) is the...

    Here is the wiki explanation, it says the bandwidth necessary is 50Hz, whereas a CW could, theoretically, be narrower at 1Hz.
    I have personally not used WSPR, but it looks like a system like RTTY...
  15. Replies
    9
    Views
    1,393

    You could try laplink if your XP machine has a...

    You could try laplink if your XP machine has a serial port, transfer the files over that way, otherwise, try an ethernet PCMCIA card?
  16. Replies
    11
    Views
    1,457

    lay down some nice, expensive coax?

    lay down some nice, expensive coax?
  17. Replies
    2
    Views
    656

    You might need to enable CTCSS, check with the...

    You might need to enable CTCSS, check with the local group/web for the tone frequency...
  18. Replies
    4
    Views
    1,157

    I'll bet those are imports, try with a known...

    I'll bet those are imports, try with a known brand...
  19. Replies
    14
    Views
    2,016

    speaking of batteries, connect your rig to one...

    speaking of batteries, connect your rig to one and see if it reduces your noise level...
  20. Replies
    9
    Views
    1,231

    Welcome! - post away!

    Welcome! - post away!
  21. are we allowed to write a program to work this...

    are we allowed to write a program to work this out?
  22. Thread: yeausu ft8900

    by 5B4AJB
    Replies
    10
    Views
    1,509

    also, just because it's a Yaesu mic into a Yaesu...

    also, just because it's a Yaesu mic into a Yaesu radio, with the right connector on it, doesn't mean it's wired right - I still reckon' you have a loose wire...
  23. Thread: yeausu ft8900

    by 5B4AJB
    Replies
    10
    Views
    1,509

    Do you mean the microphone buttons? Maybe it's...

    Do you mean the microphone buttons?

    Maybe it's a mic problem, open it and check all the wires for continuity...
  24. Thread: Hi all

    by 5B4AJB
    Replies
    2
    Views
    831

    welcome to the fray!

    welcome to the fray!
  25. Replies
    14
    Views
    2,016

    Most likely ADSL or switch-mode power supplies -...

    Most likely ADSL or switch-mode power supplies - welcome to the 21st century :/
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4