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Thread: An engineer's explanation of AGR and Weighted Valve Caps

  1. #11
    Join Date
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    Quote Originally Posted by RickF View Post
    Good points Jim! Being in RADAR for over 30 years (FAA and Air Force), I often thought of our horn's tubing being similar to the waveguide of ASR radar (Airport Surveillance Radar). The electronic waves propagate or reflect down the waveguide toward the antenna (wave guides are used for some higher frequencies since they have less attenuation than RF cable (2800 mhz for ASR radar)). The length of waveguide is very critical to get most of the power out to the antenna... or out the horn of the bell.
    I know you didn't mean it, Rick, but I had to chuckle about getting most of the power "out the horn of the bell". How exactly would you do that?
    John Morgan
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  2. #12
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    Jan 2006
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    Yes, I misspoke. The length of waveguide needs to be right (number of wavelengths) to get the most power. On a horn the length of tubing needs to be right to get the right ‘pitch’ out of the horn.
    Last edited by RickF; 11-03-2022 at 09:07 PM.
    Rick Floyd
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