Results 1 to 4 of 4

Thread: SWR meter newbie question.

  1. #1

    Default SWR meter newbie question.

    Hi everybody,
    Being a tech in the audio domain for years
    I'm new at RF stuff and want to do some experiments
    with snall AM and FM transmitters (5w max).
    Doing some power tests with a small homebrew 5w AM RF amplifer
    I need a SWR meter between a test antenna and the amp output that
    would cover 500khz to 1.8Mhz (AM band) but cannot find any
    for sale on the web..
    The only available ones are for CB's or higher frequencies like FM..
    Can you help me to find a source for this type of SWR meter ?
    Thanks.

    J-Pierre
    Canada

  2. #2
    Super Moderator 5B4AJB's Avatar
    Join Date
    Mar 2008
    Location
    Meneou, Cyprus
    Posts
    2,084

    Default

    You mean between the transmitter and dummy load?

    Any C.B. type should give you a close enough reading...

  3. #3

    Join Date
    Aug 2017
    Posts
    142

    Default

    Quote Originally Posted by jpdesroc View Post
    Hi everybody,
    Being a tech in the audio domain for years
    I'm new at RF stuff and want to do some experiments
    with snall AM and FM transmitters (5w max).
    Doing some power tests with a small homebrew 5w AM RF amplifer
    I need a SWR meter between a test antenna and the amp output that
    would cover 500khz to 1.8Mhz (AM band) but cannot find any
    for sale on the web..
    The only available ones are for CB's or higher frequencies like FM..
    Can you help me to find a source for this type of SWR meter ?
    Thanks.

    J-Pierre
    Canada
    Not really sure what the rules are in Canada, but as far as I know, there is no licensed operations using FM type emissions on any frequency between 500 khz and 1.8 Mhz.

    Sounds like you are trying to make some sort of boot-leg transmitter for AM broadcast commercial radio.

    The problem is not the SWR meter, but the necessary length of the antenna needed to work these frequencies.

    Might I suggest that you first start out with an old ARRL Handbook - here is a good example..

    https://archive.org/details/RadioAmateurHandbook1976

    Read this from cover to cover and you will gain the knowledge you are looking for.

    The meter you are looking for is called a BIRD WATT Meter - with the proper slug..

    https://www.rfparts.com/wattmeters-v...-elements.html

  4. #4

    Default

    Who has the capability to receive FM on these wavelengths? More importantly, the deviation would have to be extremely low to stay within a typical bandwidth for that part of the spectrum.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •