Search:

Type: Posts; User: Psi*

Search: Search took 0.03 seconds.

  1. Replies
    4
    Views
    128

    I think that is a bazooka balun sans the other...

    I think that is a bazooka balun sans the other half of the dipole
  2. Replies
    4
    Views
    128

    First, this is a monopole. As a result it must be...

    First, this is a monopole. As a result it must be installed on a ground plane, aka a sheet of metal as might accurately remember 1/4 wavelength or maybe it is a 1/2. Without which, performance sucks....
  3. Define what you consider effective? For me, the...

    Define what you consider effective?
    For me, the answer is that using antennas with design would be an exceptionally poor match. Meaning very little power delivered to the antenna and not effective...
  4. Replies
    2
    Views
    100

    Eventually you will need a balun to get to the...

    Eventually you will need a balun to get to the coaxial input of your transceiver. Many commercial baluns have a ground terminal that provides a DC connection to both sides of the dipole. And that...
  5. Replies
    7
    Views
    264

    Pat is correct about accuracy. When digital...

    Pat is correct about accuracy. When digital multimeters came out it was a standing joke that it took much longer to set a voltage because people were determined to get that last insignificant digit...
  6. Replies
    7
    Views
    264

    A few years ago I got a great deal on 2 Bird...

    A few years ago I got a great deal on 2 Bird wattmeters with a large assortment of elements covering all ham bands and power levels. Sort of the go to package, but I was starting to investigate...
  7. I have a grid dish for 2.4GHz. Guessing that it...

    I have a grid dish for 2.4GHz. Guessing that it is ~2' diameter ... something like this but not that exactly tho pretty close. At the moment, I forget exactly where I bought, but is was inspired by...
  8. what 5b4ajb says

    what 5b4ajb says
  9. Replies
    2
    Views
    345

    I had not heard of this. The fellows at fmt-nuts...

    I had not heard of this. The fellows at fmt-nuts might have some info.

    I have read about H or V polarized HF signals changed to circular polarization after ionosphere bounce. After a move in the...
  10. Replies
    12
    Views
    554

    There are a few hard to find test reposrt on the...

    There are a few hard to find test reposrt on the Chinese radios. I can't find one now to help. Generally, the results show pretty lousy selectivity and ample sideband noise. A conclusion is ... so...
  11. Replies
    27
    Views
    25,670

    Sticky: THAT works ...

    THAT works ...
  12. Replies
    5
    Views
    310

    Handheld Radios You might be listening to the input side of the...

    You might be listening to the input side of the repeater and directly receiving that ham's transmission. Find the repeater's tx freq and set your baofeng's rcvr to that.
  13. Replies
    8
    Views
    623

    Not sure what Top Band means, but for Ohmic...

    Not sure what Top Band means, but for Ohmic resistance a 1000' #13 is ~2 Ohms ... at 68 deg F

    Yes, for 160m it would have to be at least 130'.

    There were plenty of nulls predicted off my loop...
  14. Replies
    8
    Views
    623

    I had a horizontal loop similar to JohnD. I made...

    I had a horizontal loop similar to JohnD. I made a computer model before I put it up which guided me to how much ladder line to drop for the feed. The total loop was probably ~270' & the dropped...
  15. Thread: Hams and 11m

    by Psi*
    Replies
    26
    Views
    1,267

    I am too lazy to research this for actual links...

    I am too lazy to research this for actual links ... 11 meters is the CB band and usable with only properly certified radios which are not any ham radios. Once upon a time (and maybe still) getting...
  16. Replies
    5
    Views
    821

    I am guessing that this amp was found not...

    I am guessing that this amp was found not operating. Not necessarily not operable.

    So, any documentation of any kind available?
  17. Thread: SDR - darn it!

    by Psi*
    Replies
    20
    Views
    3,443

    At my request several months ago, they added the...

    At my request several months ago, they added the ability (a "button" push) to separate CW signals to left & right headphone speakers. Basically, the rcvd signals above the the rcvr tuned freq and in...
  18. Thread: SDR - darn it!

    by Psi*
    Replies
    20
    Views
    3,443

    Ots ... I took your approach. Doing actual...

    Ots ... I took your approach. Doing actual research before buying something and then asking everyone what I had bought. A bit scarcastic, but it seems to happen a lot.

    I am also a born again ham...
  19. Replies
    11
    Views
    2,727

    The idea of grounding for direct lightning...

    The idea of grounding for direct lightning strikes is to divert as much energy as possible. THAT is all that can be done and you do not want it to find a path thru your home. You want a direct...
  20. Replies
    2
    Views
    1,875

    Having a SDR with a waterfall spectrum display...

    Having a SDR with a waterfall spectrum display saves a lot of that. But, I'm not really into contesting. Feels like a drive by shooting ... feels like what it must feel like:smilet-digitalpoint
  21. Replies
    6
    Views
    1,697

    hahaha ... reminds me when I had 3 teenagers...

    hahaha ... reminds me when I had 3 teenagers wanting to learn to drive. At the time I had a performance car and had opportunity to show them how not to drive.

    To be fair, many are polite, many...
  22. Replies
    6
    Views
    3,992

    As Wingfoot says, give some consideration to a...

    As Wingfoot says, give some consideration to a repeater and is kind of ham vhf/uhf 101.

    Alternatively, given that you mentioned "... not opposed to getting HF if necessary ...", think about a...
  23. Replies
    12
    Views
    3,525

    My 1st post here! Water in the air (aka...

    My 1st post here!

    Water in the air (aka humidity or precipitation of any kind) is how water attenuates a pt-pt path.

    Over a highly conductive surface as salt water you are getting a reflection...
Results 1 to 23 of 23